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Transcript
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1
1 pt Which equation is the Roche limit for the case where
the moon and planet have the same density? [Use these equations as a reminder.]
1. AR=2.5Rplanet .
BKE=1/2 m v2 , where v is the speed
Cv2 >2GMplanet /Rplanet , where v is the speed.
DKE=3/2kT, where T is temperature.
Answer for Part: 0
true
false
false
false
1 pt The specific purpose of the 4.1-meter primary mirror
of the SOAR Telescope is to
2. Arefract light.
Banalyze light into its colors.
Ccollect light.
Dtake pictures.
Answer for Part: 0
false
false
true
false
1 pt To achieve the same angular resolution, a radio telescopes is much larger than an optical telescope because
3. Aradio telescopes must be more precise.
Bthe wavelength of radio waves is much longer.
Coptical telescopes must be more precise.
Dradio waves are weaker.
Answer for Part: 0
false
true
false
false
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
2
1 pt [*] Consider this hypothetical discovery, which consists
of three statements. S1: A planet is discovered beyond the
orbit of Pluto. S2: Its density is 5 times the density of water.
S3: It has many craters.would be very surprising.
4. AS2 & S3
BNone of the statements
CS3
DS2
ES1, S2, & S3
Answer for Part: 0
false
false
false
true
false
1 pt Which is not a moon of Jupiter?
5. AIo
BTitan
CEuropa
DGanymede
ECallisto
Answer for Part: 0
false
true
false
false
false
1 pt You are equiped with a suit that supplies air to breathe
and keeps you warm or cool. On which of these moons or
planets could you not land?
6. APluto
BMars
CCallisto
DSaturn
Answer for Part: 0
false
false
false
true
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
3
1 pt The planet that is fourth closest to the sun is
7. AVenus.
BMars.
CJupiter.
DEarth.
ESaturn.
1 pt Which one of these statements is true for the nucleus
of Halley’s comet?
Answer for Part: 0
false
false
false
false
true
1 pt Potassium 40, which decays into argon 40, is used to
figure out the age of meteorites. Why is there no argon 40 in
the meteor when it formed?
8. ANo argon 40 had been produced in the solar system
when the meteor formed.
BArgon condenses at an extremely low temperature.
CArgon collected in the massive asteroids.
DAll the argon collected in the jovian planets.
Answer for Part: 0
false
true
false
false
years.
9. A65 Million
B13 Billion
C1 Billion
D4.5 Billion
Answer for Part: 0
false
false
false
true
1 pt Whattriggered the collapse of the gas cloud that became the solar system.
10. AThe Big Bang
BA supernova, an exploding star
CThe pressure of a massive star
DGravity
Answer for Part: 0
false
true
false
false
4
11. AIts shape is roughly spherical.
BIt is about the size of Michigan.
CIt is made mostly of carbon.
DIts surface is uniform.
EIt is very black.
Answer for Part: 0
false
true
false
false
false
1 pt The age of the solar system is
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1 pt Why does the tail of a comet point away from the sun?
12. AThe magnetic field of the sun keeps the tail pointing
away.
BGas from the comet, heated by the sun, pushes the
tail away from the sun.
CThe solar wind blows gas and dust away from the
sun.
DConservation of angular momentum keeps the tail
pointing away.
Answer for Part: 0
false
false
true
false
1 pt Which of the following statements comparing the jovian interiors is not thought to be true?
13. AThey all have cores of roughly the same mass.
BThey all have the same exact set of internal layers,
though these layers differ in size.
CThey all have cores that contain at least some rock
and metal.
DDeep inside them, they all have pressures far higher
than that found on the bottom of the ocean on Earth.
Answer for Part: 0
false
true
false
false
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
5
1 pt The clouds on the surface of Jupiter are not made of
condensed
14. Ahydrogen.
Bammonium hydrosulfide.
Cammonia.
Dwater.
Answer for Part: 0
true
false
false
false
1 pt Why can the material in the rings of Jovian planets
not collect to form moons?
15. AThe rings are not made of sticky material
BThere is not enough material
CThe rings are inside the Roche limit
DThe rings are too thin
Answer for Part: 0
false
false
true
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
16. AIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
BUltraviolet light split the water molecules, and the
hydrogen then escaped to space.
CIt is frozen in craters near the poles.
DWater was removed from the atmosphere by chemical reactions with surface rock.
Answer for Part: 0
false
true
false
false
1 pt Astronomers believe that Mars had liquid water in the
past because
17. Aphotographs show smooth rocks
Bthe space probe Odyssey found water ice.
Cmicroscopic fossils were found.
Dphotographs show dry riverbeds.
Answer for Part: 0
false
false
false
true
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
6
1 pt Why does Venus have so much more atmospheric gas
than Earth?
18. ABecause of its lack of magnetic field, Venus has been
able to gain gas through the process of bombardment,
while Earth has not gained gas in this way.
BEarth has lost much more gas to thermal escape
than has Venus.
CEarth has lost much more atmospheric gas than
Venus, primarily to condensation of water vapor into
liquid water and to chemical reactions that make carbonate rock.
DVenus has gained much more gas through outgassing than has Earth.
Answer for Part: 0
false
false
true
false
3 pt [*] Uranus was able attract helium (mass=4) and
molecular hydrogen (mass=2) to the core, which formed first.
Assume that Uranus cannot keep a gas with mass=1. Imagine a hypothetical planet core formed at the same location
with the same size and 1/10 as much mass. What is the
minimum mass of the gas that this hypothetical planet can
attract and keep?
19. A4
B10
C40
D2
E20
Answer for Part: 0
false
true
false
false
false
1 pt Which is evidence that Io, one of Jupiter’s moons, has
a hot interior.
20. AJupiter radiates a lot of infrared light.
BIo is close to Jupiter.
CIo has high radioactivity.
DIo has volcanoes.
Answer for Part: 0
false
false
false
true
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
7
1 pt What is the source of the energy that heats Io?
21. ARadioactivity.
BInfrared radiation from Jupiter.
CMotion of the moons.
DSolar energy.
Answer for Part: 0
false
false
true
false
1 pt [*] Hydrogen and helium make up more than 98% of
the mass of the proto solar system. Carbon, nitrogen, and
oxygen make up 1%. Metals and other elements make up
0.6%. Why did the hydrogen and helium that was in the
vicinity of the formingEarth not end up on the present Earth?
R1: It was too hot for these to condense. R2: The solid
earth was notmassive enough to hold on to these gases. R3:
The solar wind blew these gasses away. The main reasons
are.[Hint: Test your reasons with the case of Jupiter.]
22. AR1 & R2.
BR2 & R3.
CR1, R2, & R3.
DR1 & R3.
Answer for Part: 0
true
false
false
false
1 pt What happened to the metals that were in the vicinity
of the forming Earth?
23. AThey were driven off by the solar wind.
BThe Jovian planets accreted them.
CThey became asteroids.
DThey are primarily in the core of the earth.
Answer for Part: 0
false
false
false
true
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
8
1 pt A giant hand suddenly moves the earth farther from
the Sun. The temperature of the Earth cools. Which processwould certainly happen and cause the temperature to rise.
24. AVolcanoes are more active.
BPlate tectonics become more active.
CThere is less rain.
DThere is more plant matter.
Answer for Part: 0
false
false
true
false
1 pt The space probe Odyssey found that the in regions
north and south of 60 degrees latitude the surface is 50%water
ice by volume. How is it that Odyssey was able to detect this
water?
25. AThe Odyssey sent a surface probe down to collect
samples.
BOdyssey detected the differences in the energy of
the neutrons coming off the surface of the planet.
CThe density of the surface was greater where there
is no water.
DThe color of the surface is different where there is
water.
EThe temperature of the surface is cooler where there
was so much ice.
Answer for Part: 0
false
true
false
false
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
26. AUltraviolet light split the water molecules, and the
hyrdrogen then escaped to space.
BWater was removed from the atmosphere by chemical reactions with surface rock.
CIt is frozen in craters near the poles.
DIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
Answer for Part: 0
false
false
false
true
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
9
1 pt Which of the following is not a general characteristic
of the four jovian planets in our solar system?
27. AThey lack solid surfaces.
BThey are much more massive then any of the terrestrial planets.
CThey are higher in average density than are the terrestrial planets.
DThey are composed of mainly hydrogen, helium,
and hydrogen compounds.
Answer for Part: 0
false
true
false
false
1 pt The planets near the sun have a high density because
28. AThe lighter materials could not condense because
the proto planet fell too far and became too hot.
BThe sun evaporated the lighter materials
CThe lighter materials escaped the planets gravity
DThe sun prevented the lighter materials from condensing.
Answer for Part: 0
true
false
false
false
1 pt The Hubble Space Telescope orbits the Earth, even
though it is far inside the Roche limit. The Hubble Space
telescope is not broken apart because
29. AThe Roche limit will cause the Space Telescope to
break up after some time.
BThe density of the Space Telescope is too high.
CGravity does not apply to weightless conditions.
Dthe Roche limit does not apply to something held
together by atomic bonds.
Answer for Part: 0
false
false
false
true
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
10
1 pt [*] The energy levels 1-4 of Hydrogen are 0, 10.2, 12.1,
and 12.8 electron volts (eV), repectively. The Hydrogen is so
cool that the electrons are all in level 1. The Hydrogen gas
absorbs photons of energy 12.1 eV. When the electrons lose
energy, light of
different energies will be emitted.
30. A1
B3
C2
Dmore than 3
Answer for Part: 0
false
true
false
false
1 pt [*] Do the lamps L & R at the front of the room emit
thermal (black body) radiation?
31. AYes for both.
BNo for L; yes for R.
CNo for both.
DYes for L; no for R.
Answer for Part: 0
true
false
false
false
1 pt [*] While walking home around 9 pm, you see the moon
rising.
of the moon is lit.
32. AAlmost all
BLess than half
CLittle
DMore than half
EHalf
Answer for Part: 0
false
false
false
true
false
1 pt [*] A giant hand suddenly doubled the mass of the sun
and adjusted the motion of the earth to keep it in the same
path. The giant hand would have had to make the earth .
33. Amove the same
Bmove faster
Cmove slower
Answer for Part: 0
false
true
false
CODE - CIFGHI - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
11
1 pt
[*] Suppose a new comet is discovered with a period of 29.5
years, which is the same as that of Saturn. The orbit of
the comet is highly elliptical. Saturn is 9.5 AU from the
sun. Draw the orbits of the comet and Saturn. Be certain to
include the sun. Your drawing must show accurate relative
sizes.
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1
1 pt Which equation is the Roche limit for the case where
the moon and planet have the same density? [Use these equations as a reminder.]
1. Av2 >2GMplanet /Rplanet , where v is the speed.
BKE=3/2kT, where T is temperature.
CKE=1/2 m v2 , where v is the speed
DR=2.5Rplanet .
Answer for Part: 0
false
false
false
true
34. Leave blank on scoring form
Printed from LON-CAPA
MSU
Licensed under GNU General Public License
1 pt The specific purpose of the 4.1-meter primary mirror
of the SOAR Telescope is to
2. Atake pictures.
Bcollect light.
Canalyze light into its colors.
Drefract light.
Answer for Part: 0
false
true
false
false
1 pt To achieve the same angular resolution, a radio telescopes is much larger than an optical telescope because
3. Aoptical telescopes must be more precise.
Bradio waves are weaker.
Cradio telescopes must be more precise.
Dthe wavelength of radio waves is much longer.
Answer for Part: 0
false
false
false
true
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
2
1 pt [*] Consider this hypothetical discovery, which consists
of three statements. S1: A planet is discovered beyond the
orbit of Pluto. S2: Its density is 5 times the density of water.
S3: It has many craters.would be very surprising.
4. AS3
BS2
CNone of the statements
DS1, S2, & S3
ES2 & S3
Answer for Part: 0
false
true
false
false
false
1 pt Which is not a moon of Jupiter?
5. AGanymede
BIo
CCallisto
DEuropa
ETitan
Answer for Part: 0
false
false
false
false
true
1 pt You are equiped with a suit that supplies air to breathe
and keeps you warm or cool. On which of these moons or
planets could you not land?
6. ACallisto
BSaturn
CPluto
DMars
Answer for Part: 0
false
true
false
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
3
1 pt The planet that is fourth closest to the sun is
7. ASaturn.
BVenus.
CEarth.
DMars.
EJupiter.
Answer for Part: 0
false
false
false
true
false
1 pt Potassium 40, which decays into argon 40, is used to
figure out the age of meteorites. Why is there no argon 40 in
the meteor when it formed?
8. AArgon condenses at an extremely low temperature.
BArgon collected in the massive asteroids.
CNo argon 40 had been produced in the solar system
when the meteor formed.
DAll the argon collected in the jovian planets.
Answer for Part: 0
true
false
false
false
1 pt The age of the solar system is
years.
9. A4.5 Billion
B1 Billion
C65 Million
D13 Billion
Answer for Part: 0
true
false
false
false
1 pt Whattriggered the collapse of the gas cloud that became the solar system.
10. AThe pressure of a massive star
BThe Big Bang
CA supernova, an exploding star
DGravity
Answer for Part: 0
false
false
true
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
4
1 pt Which one of these statements is true for the nucleus
of Halley’s comet?
11. AIts surface is uniform.
BIt is very black.
CIt is made mostly of carbon.
DIt is about the size of Michigan.
EIts shape is roughly spherical.
Answer for Part: 0
false
true
false
false
false
1 pt Why does the tail of a comet point away from the sun?
12. AThe magnetic field of the sun keeps the tail pointing
away.
BConservation of angular momentum keeps the tail
pointing away.
CGas from the comet, heated by the sun, pushes the
tail away from the sun.
DThe solar wind blows gas and dust away from the
sun.
Answer for Part: 0
false
false
false
true
1 pt Which of the following statements comparing the jovian interiors is not thought to be true?
13. ADeep inside them, they all have pressures far higher
than that found on the bottom of the ocean on Earth.
BThey all have cores of roughly the same mass.
CThey all have the same exact set of internal layers,
though these layers differ in size.
DThey all have cores that contain at least some rock
and metal.
Answer for Part: 0
false
false
true
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
5
1 pt The clouds on the surface of Jupiter are not made of
condensed
14. Aammonia.
Bhydrogen.
Cwater.
Dammonium hydrosulfide.
Answer for Part: 0
false
true
false
false
1 pt Why can the material in the rings of Jovian planets
not collect to form moons?
15. AThere is not enough material
BThe rings are not made of sticky material
CThe rings are too thin
DThe rings are inside the Roche limit
Answer for Part: 0
false
false
false
true
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
16. AIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
BIt is frozen in craters near the poles.
CUltraviolet light split the water molecules, and the
hydrogen then escaped to space.
DWater was removed from the atmosphere by chemical reactions with surface rock.
Answer for Part: 0
false
false
true
false
1 pt Astronomers believe that Mars had liquid water in the
past because
17. Aphotographs show dry riverbeds.
Bthe space probe Odyssey found water ice.
Cmicroscopic fossils were found.
Dphotographs show smooth rocks
Answer for Part: 0
true
false
false
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
6
1 pt Why does Venus have so much more atmospheric gas
than Earth?
18. ABecause of its lack of magnetic field, Venus has been
able to gain gas through the process of bombardment,
while Earth has not gained gas in this way.
BVenus has gained much more gas through outgassing than has Earth.
CEarth has lost much more gas to thermal escape
than has Venus.
DEarth has lost much more atmospheric gas than
Venus, primarily to condensation of water vapor into
liquid water and to chemical reactions that make carbonate rock.
Answer for Part: 0
false
false
false
true
3 pt [*] Uranus was able attract helium (mass=4) and
molecular hydrogen (mass=2) to the core, which formed first.
Assume that Uranus cannot keep a gas with mass=1. Imagine a hypothetical planet core formed at the same location
with the same size and 1/10 as much mass. What is the
minimum mass of the gas that this hypothetical planet can
attract and keep?
19. A2
B20
C10
D40
E4
Answer for Part: 0
false
false
true
false
false
1 pt Which is evidence that Io, one of Jupiter’s moons, has
a hot interior.
20. AIo has volcanoes.
BJupiter radiates a lot of infrared light.
CIo has high radioactivity.
DIo is close to Jupiter.
Answer for Part: 0
true
false
false
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
7
1 pt What is the source of the energy that heats Io?
21. AInfrared radiation from Jupiter.
BSolar energy.
CRadioactivity.
DMotion of the moons.
Answer for Part: 0
false
false
false
true
1 pt [*] Hydrogen and helium make up more than 98% of
the mass of the proto solar system. Carbon, nitrogen, and
oxygen make up 1%. Metals and other elements make up
0.6%. Why did the hydrogen and helium that was in the
vicinity of the formingEarth not end up on the present Earth?
R1: It was too hot for these to condense. R2: The solid
earth was notmassive enough to hold on to these gases. R3:
The solar wind blew these gasses away. The main reasons
are.[Hint: Test your reasons with the case of Jupiter.]
22. AR1 & R3.
BR1 & R2.
CR1, R2, & R3.
DR2 & R3.
Answer for Part: 0
false
true
false
false
1 pt What happened to the metals that were in the vicinity
of the forming Earth?
23. AThey are primarily in the core of the earth.
BThe Jovian planets accreted them.
CThey were driven off by the solar wind.
DThey became asteroids.
Answer for Part: 0
true
false
false
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
8
1 pt A giant hand suddenly moves the earth farther from
the Sun. The temperature of the Earth cools. Which processwould certainly happen and cause the temperature to rise.
24. AVolcanoes are more active.
BThere is more plant matter.
CPlate tectonics become more active.
DThere is less rain.
Answer for Part: 0
false
false
false
true
1 pt The space probe Odyssey found that the in regions
north and south of 60 degrees latitude the surface is 50%water
ice by volume. How is it that Odyssey was able to detect this
water?
25. AThe color of the surface is different where there is
water.
BThe Odyssey sent a surface probe down to collect
samples.
COdyssey detected the differences in the energy of
the neutrons coming off the surface of the planet.
DThe density of the surface was greater where there
is no water.
EThe temperature of the surface is cooler where there
was so much ice.
Answer for Part: 0
false
false
true
false
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
26. AIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
BIt is frozen in craters near the poles.
CWater was removed from the atmosphere by chemical reactions with surface rock.
DUltraviolet light split the water molecules, and the
hyrdrogen then escaped to space.
Answer for Part: 0
true
false
false
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
9
1 pt Which of the following is not a general characteristic
of the four jovian planets in our solar system?
27. AThey lack solid surfaces.
BThey are composed of mainly hydrogen, helium,
and hydrogen compounds.
CThey are much more massive then any of the terrestrial planets.
DThey are higher in average density than are the
terrestrial planets.
Answer for Part: 0
false
false
true
false
1 pt The planets near the sun have a high density because
28. AThe lighter materials escaped the planets gravity
BThe lighter materials could not condense because
the proto planet fell too far and became too hot.
CThe sun evaporated the lighter materials
DThe sun prevented the lighter materials from condensing.
Answer for Part: 0
false
true
false
false
1 pt The Hubble Space Telescope orbits the Earth, even
though it is far inside the Roche limit. The Hubble Space
telescope is not broken apart because
29. Athe Roche limit does not apply to something held
together by atomic bonds.
BGravity does not apply to weightless conditions.
CThe density of the Space Telescope is too high.
DThe Roche limit will cause the Space Telescope to
break up after some time.
Answer for Part: 0
true
false
false
false
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
10
1 pt [*] The energy levels 1-4 of Hydrogen are 0, 10.2, 12.1,
and 12.8 electron volts (eV), repectively. The Hydrogen is so
cool that the electrons are all in level 1. The Hydrogen gas
absorbs photons of energy 12.1 eV. When the electrons lose
energy, light of
different energies will be emitted.
30. Amore than 3
B1
C3
D2
CODE - DCABFA - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
11
1 pt
[*] Suppose a new comet is discovered with a period of 29.5
years, which is the same as that of Saturn. The orbit of
the comet is highly elliptical. Saturn is 9.5 AU from the
sun. Draw the orbits of the comet and Saturn. Be certain to
include the sun. Your drawing must show accurate relative
sizes.
Answer for Part: 0
false
false
true
false
1 pt [*] Do the lamps L & R at the front of the room emit
thermal (black body) radiation?
34. Leave blank on scoring form
Printed from LON-CAPA
31. ANo for both.
BYes for both.
CNo for L; yes for R.
DYes for L; no for R.
Answer for Part: 0
false
true
false
false
1 pt [*] While walking home around 9 pm, you see the moon
rising.
of the moon is lit.
32. AMore than half
BHalf
CLittle
DLess than half
EAlmost all
Answer for Part: 0
true
false
false
false
false
1 pt [*] A giant hand suddenly doubled the mass of the sun
and adjusted the motion of the earth to keep it in the same
path. The giant hand would have had to make the earth .
33. Amove the same
Bmove slower
Cmove faster
Answer for Part: 0
false
false
true
MSU
Licensed under GNU General Public License
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1
1 pt Which equation is the Roche limit for the case where
the moon and planet have the same density? [Use these equations as a reminder.]
2
1. Av >2GMplanet /Rplanet , where v is the speed.
BR=2.5Rplanet .
CKE=3/2kT, where T is temperature.
DKE=1/2 m v2 , where v is the speed
Answer for Part: 0
false
true
false
false
1 pt The specific purpose of the 4.1-meter primary mirror
of the SOAR Telescope is to
2. Atake pictures.
Banalyze light into its colors.
Crefract light.
Dcollect light.
Answer for Part: 0
false
false
false
true
1 pt To achieve the same angular resolution, a radio telescopes is much larger than an optical telescope because
3. Aoptical telescopes must be more precise.
Bthe wavelength of radio waves is much longer.
Cradio waves are weaker.
Dradio telescopes must be more precise.
Answer for Part: 0
false
true
false
false
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
2
1 pt [*] Consider this hypothetical discovery, which consists
of three statements. S1: A planet is discovered beyond the
orbit of Pluto. S2: Its density is 5 times the density of water.
S3: It has many craters.would be very surprising.
4. AS3
BS1, S2, & S3
CS2 & S3
DNone of the statements
ES2
Answer for Part: 0
false
false
false
false
true
1 pt Which is not a moon of Jupiter?
5. AGanymede
BCallisto
CTitan
DIo
EEuropa
Answer for Part: 0
false
false
true
false
false
1 pt You are equiped with a suit that supplies air to breathe
and keeps you warm or cool. On which of these moons or
planets could you not land?
6. ACallisto
BMars
CPluto
DSaturn
Answer for Part: 0
false
false
false
true
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
3
1 pt The planet that is fourth closest to the sun is
7. ASaturn.
BMars.
CEarth.
DVenus.
EJupiter.
1 pt Which one of these statements is true for the nucleus
of Halley’s comet?
Answer for Part: 0
false
false
false
false
true
1 pt Potassium 40, which decays into argon 40, is used to
figure out the age of meteorites. Why is there no argon 40 in
the meteor when it formed?
8. AArgon collected in the massive asteroids.
BArgon condenses at an extremely low temperature.
CNo argon 40 had been produced in the solar system
when the meteor formed.
DAll the argon collected in the jovian planets.
Answer for Part: 0
false
true
false
false
years.
9. A1 Billion
B13 Billion
C4.5 Billion
D65 Million
Answer for Part: 0
false
false
true
false
1 pt Whattriggered the collapse of the gas cloud that became the solar system.
10. AA supernova, an exploding star
BThe pressure of a massive star
CGravity
DThe Big Bang
Answer for Part: 0
true
false
false
false
4
11. AIts surface is uniform.
BIts shape is roughly spherical.
CIt is made mostly of carbon.
DIt is about the size of Michigan.
EIt is very black.
Answer for Part: 0
false
true
false
false
false
1 pt The age of the solar system is
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1 pt Why does the tail of a comet point away from the sun?
12. AThe magnetic field of the sun keeps the tail pointing
away.
BGas from the comet, heated by the sun, pushes the
tail away from the sun.
CThe solar wind blows gas and dust away from the
sun.
DConservation of angular momentum keeps the tail
pointing away.
Answer for Part: 0
false
false
true
false
1 pt Which of the following statements comparing the jovian interiors is not thought to be true?
13. ADeep inside them, they all have pressures far higher
than that found on the bottom of the ocean on Earth.
BThey all have the same exact set of internal layers,
though these layers differ in size.
CThey all have cores that contain at least some rock
and metal.
DThey all have cores of roughly the same mass.
Answer for Part: 0
false
true
false
false
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
5
1 pt The clouds on the surface of Jupiter are not made of
condensed
14. Aammonia.
Bammonium hydrosulfide.
Cwater.
Dhydrogen.
Answer for Part: 0
false
false
false
true
1 pt Why can the material in the rings of Jovian planets
not collect to form moons?
15. AThere is not enough material
BThe rings are too thin
CThe rings are inside the Roche limit
DThe rings are not made of sticky material
Answer for Part: 0
false
false
true
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
16. AIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
BUltraviolet light split the water molecules, and the
hydrogen then escaped to space.
CWater was removed from the atmosphere by chemical reactions with surface rock.
DIt is frozen in craters near the poles.
Answer for Part: 0
false
true
false
false
1 pt Astronomers believe that Mars had liquid water in the
past because
17. Athe space probe Odyssey found water ice.
Bphotographs show smooth rocks
Cmicroscopic fossils were found.
Dphotographs show dry riverbeds.
Answer for Part: 0
false
false
false
true
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
6
1 pt Why does Venus have so much more atmospheric gas
than Earth?
18. ABecause of its lack of magnetic field, Venus has been
able to gain gas through the process of bombardment,
while Earth has not gained gas in this way.
BEarth has lost much more gas to thermal escape
than has Venus.
CEarth has lost much more atmospheric gas than
Venus, primarily to condensation of water vapor into
liquid water and to chemical reactions that make carbonate rock.
DVenus has gained much more gas through outgassing than has Earth.
Answer for Part: 0
false
false
true
false
3 pt [*] Uranus was able attract helium (mass=4) and
molecular hydrogen (mass=2) to the core, which formed first.
Assume that Uranus cannot keep a gas with mass=1. Imagine a hypothetical planet core formed at the same location
with the same size and 1/10 as much mass. What is the
minimum mass of the gas that this hypothetical planet can
attract and keep?
19. A2
B10
C4
D40
E20
Answer for Part: 0
false
true
false
false
false
1 pt Which is evidence that Io, one of Jupiter’s moons, has
a hot interior.
20. AJupiter radiates a lot of infrared light.
BIo is close to Jupiter.
CIo has high radioactivity.
DIo has volcanoes.
Answer for Part: 0
false
false
false
true
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
7
1 pt What is the source of the energy that heats Io?
21. AInfrared radiation from Jupiter.
BMotion of the moons.
CRadioactivity.
DSolar energy.
Answer for Part: 0
false
true
false
false
1 pt [*] Hydrogen and helium make up more than 98% of
the mass of the proto solar system. Carbon, nitrogen, and
oxygen make up 1%. Metals and other elements make up
0.6%. Why did the hydrogen and helium that was in the
vicinity of the formingEarth not end up on the present Earth?
R1: It was too hot for these to condense. R2: The solid
earth was notmassive enough to hold on to these gases. R3:
The solar wind blew these gasses away. The main reasons
are.[Hint: Test your reasons with the case of Jupiter.]
22. AR1 & R2.
BR1 & R3.
CR2 & R3.
DR1, R2, & R3.
Answer for Part: 0
true
false
false
false
1 pt What happened to the metals that were in the vicinity
of the forming Earth?
23. AThe Jovian planets accreted them.
BThey became asteroids.
CThey were driven off by the solar wind.
DThey are primarily in the core of the earth.
Answer for Part: 0
false
false
false
true
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
8
1 pt A giant hand suddenly moves the earth farther from
the Sun. The temperature of the Earth cools. Which processwould certainly happen and cause the temperature to rise.
24. AVolcanoes are more active.
BPlate tectonics become more active.
CThere is less rain.
DThere is more plant matter.
Answer for Part: 0
false
false
true
false
1 pt The space probe Odyssey found that the in regions
north and south of 60 degrees latitude the surface is 50%water
ice by volume. How is it that Odyssey was able to detect this
water?
25. AThe color of the surface is different where there is
water.
BOdyssey detected the differences in the energy of
the neutrons coming off the surface of the planet.
CThe temperature of the surface is cooler where there
was so much ice.
DThe density of the surface was greater where there
is no water.
EThe Odyssey sent a surface probe down to collect
samples.
Answer for Part: 0
false
true
false
false
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
26. AIt is frozen in craters near the poles.
BUltraviolet light split the water molecules, and the
hyrdrogen then escaped to space.
CWater was removed from the atmosphere by chemical reactions with surface rock.
DIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
Answer for Part: 0
false
false
false
true
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
9
1 pt Which of the following is not a general characteristic
of the four jovian planets in our solar system?
27. AThey are composed of mainly hydrogen, helium,
and hydrogen compounds.
BThey are much more massive then any of the terrestrial planets.
CThey are higher in average density than are the terrestrial planets.
DThey lack solid surfaces.
Answer for Part: 0
false
true
false
false
1 pt The planets near the sun have a high density because
28. AThe lighter materials could not condense because
the proto planet fell too far and became too hot.
BThe lighter materials escaped the planets gravity
CThe sun prevented the lighter materials from condensing.
DThe sun evaporated the lighter materials
Answer for Part: 0
true
false
false
false
1 pt The Hubble Space Telescope orbits the Earth, even
though it is far inside the Roche limit. The Hubble Space
telescope is not broken apart because
29. AGravity does not apply to weightless conditions.
BThe Roche limit will cause the Space Telescope to
break up after some time.
CThe density of the Space Telescope is too high.
Dthe Roche limit does not apply to something held
together by atomic bonds.
Answer for Part: 0
false
false
false
true
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
10
1 pt [*] The energy levels 1-4 of Hydrogen are 0, 10.2, 12.1,
and 12.8 electron volts (eV), repectively. The Hydrogen is so
cool that the electrons are all in level 1. The Hydrogen gas
absorbs photons of energy 12.1 eV. When the electrons lose
energy, light of
different energies will be emitted.
30. Amore than 3
B3
C2
D1
Answer for Part: 0
false
true
false
false
1 pt [*] Do the lamps L & R at the front of the room emit
thermal (black body) radiation?
31. AYes for both.
BNo for both.
CYes for L; no for R.
DNo for L; yes for R.
Answer for Part: 0
true
false
false
false
1 pt [*] While walking home around 9 pm, you see the moon
rising.
of the moon is lit.
32. AHalf
BAlmost all
CLittle
DMore than half
ELess than half
Answer for Part: 0
false
false
false
true
false
1 pt [*] A giant hand suddenly doubled the mass of the sun
and adjusted the motion of the earth to keep it in the same
path. The giant hand would have had to make the earth .
33. Amove slower
Bmove faster
Cmove the same
Answer for Part: 0
false
true
false
CODE - DECFBG - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
11
1 pt
[*] Suppose a new comet is discovered with a period of 29.5
years, which is the same as that of Saturn. The orbit of
the comet is highly elliptical. Saturn is 9.5 AU from the
sun. Draw the orbits of the comet and Saturn. Be certain to
include the sun. Your drawing must show accurate relative
sizes.
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1
1 pt Which equation is the Roche limit for the case where
the moon and planet have the same density? [Use these equations as a reminder.]
1. AKE=1/2 m v2 , where v is the speed
BKE=3/2kT, where T is temperature.
Cv2 >2GMplanet /Rplanet , where v is the speed.
DR=2.5Rplanet .
Answer for Part: 0
false
false
false
true
34. Leave blank on scoring form
Printed from LON-CAPA
MSU
Licensed under GNU General Public License
1 pt The specific purpose of the 4.1-meter primary mirror
of the SOAR Telescope is to
2. Arefract light.
Bcollect light.
Ctake pictures.
Danalyze light into its colors.
Answer for Part: 0
false
true
false
false
1 pt To achieve the same angular resolution, a radio telescopes is much larger than an optical telescope because
3. Athe wavelength of radio waves is much longer.
Bradio telescopes must be more precise.
Cradio waves are weaker.
Doptical telescopes must be more precise.
Answer for Part: 0
true
false
false
false
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
2
1 pt [*] Consider this hypothetical discovery, which consists
of three statements. S1: A planet is discovered beyond the
orbit of Pluto. S2: Its density is 5 times the density of water.
S3: It has many craters.would be very surprising.
4. AS2 & S3
BS1, S2, & S3
CS2
DNone of the statements
ES3
Answer for Part: 0
false
false
true
false
false
1 pt Which is not a moon of Jupiter?
5. ATitan
BIo
CGanymede
DCallisto
EEuropa
Answer for Part: 0
true
false
false
false
false
1 pt You are equiped with a suit that supplies air to breathe
and keeps you warm or cool. On which of these moons or
planets could you not land?
6. APluto
BCallisto
CSaturn
DMars
Answer for Part: 0
false
false
true
false
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
3
1 pt The planet that is fourth closest to the sun is
7. AEarth.
BMars.
CJupiter.
DSaturn.
EVenus.
Answer for Part: 0
false
true
false
false
false
1 pt Potassium 40, which decays into argon 40, is used to
figure out the age of meteorites. Why is there no argon 40 in
the meteor when it formed?
8. AArgon condenses at an extremely low temperature.
BNo argon 40 had been produced in the solar system
when the meteor formed.
CArgon collected in the massive asteroids.
DAll the argon collected in the jovian planets.
Answer for Part: 0
true
false
false
false
1 pt The age of the solar system is
years.
9. A65 Million
B1 Billion
C13 Billion
D4.5 Billion
Answer for Part: 0
false
false
false
true
1 pt Whattriggered the collapse of the gas cloud that became the solar system.
10. AGravity
BA supernova, an exploding star
CThe pressure of a massive star
DThe Big Bang
Answer for Part: 0
false
true
false
false
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
4
1 pt Which one of these statements is true for the nucleus
of Halley’s comet?
11. AIt is about the size of Michigan.
BIts shape is roughly spherical.
CIts surface is uniform.
DIt is made mostly of carbon.
EIt is very black.
Answer for Part: 0
false
false
false
false
true
1 pt Why does the tail of a comet point away from the sun?
12. AConservation of angular momentum keeps the tail
pointing away.
BGas from the comet, heated by the sun, pushes the
tail away from the sun.
CThe solar wind blows gas and dust away from the
sun.
DThe magnetic field of the sun keeps the tail pointing
away.
Answer for Part: 0
false
false
true
false
1 pt Which of the following statements comparing the jovian interiors is not thought to be true?
13. AThey all have cores that contain at least some rock
and metal.
BThey all have the same exact set of internal layers,
though these layers differ in size.
CThey all have cores of roughly the same mass.
DDeep inside them, they all have pressures far higher
than that found on the bottom of the ocean on Earth.
Answer for Part: 0
false
true
false
false
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
5
1 pt The clouds on the surface of Jupiter are not made of
condensed
14. Ahydrogen.
Bwater.
Cammonia.
Dammonium hydrosulfide.
Answer for Part: 0
true
false
false
false
1 pt Why can the material in the rings of Jovian planets
not collect to form moons?
15. AThe rings are not made of sticky material
BThe rings are too thin
CThe rings are inside the Roche limit
DThere is not enough material
Answer for Part: 0
false
false
true
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
16. AIt is frozen in craters near the poles.
BUltraviolet light split the water molecules, and the
hydrogen then escaped to space.
CWater was removed from the atmosphere by chemical reactions with surface rock.
DIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
Answer for Part: 0
false
true
false
false
1 pt Astronomers believe that Mars had liquid water in the
past because
17. Aphotographs show smooth rocks
Bthe space probe Odyssey found water ice.
Cmicroscopic fossils were found.
Dphotographs show dry riverbeds.
Answer for Part: 0
false
false
false
true
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
6
1 pt Why does Venus have so much more atmospheric gas
than Earth?
18. AVenus has gained much more gas through outgassing than has Earth.
BEarth has lost much more gas to thermal escape
than has Venus.
CEarth has lost much more atmospheric gas than
Venus, primarily to condensation of water vapor into
liquid water and to chemical reactions that make carbonate rock.
DBecause of its lack of magnetic field, Venus has been
able to gain gas through the process of bombardment,
while Earth has not gained gas in this way.
Answer for Part: 0
false
false
true
false
3 pt [*] Uranus was able attract helium (mass=4) and
molecular hydrogen (mass=2) to the core, which formed first.
Assume that Uranus cannot keep a gas with mass=1. Imagine a hypothetical planet core formed at the same location
with the same size and 1/10 as much mass. What is the
minimum mass of the gas that this hypothetical planet can
attract and keep?
19. A40
B10
C2
D20
E4
Answer for Part: 0
false
true
false
false
false
1 pt Which is evidence that Io, one of Jupiter’s moons, has
a hot interior.
20. AIo is close to Jupiter.
BJupiter radiates a lot of infrared light.
CIo has high radioactivity.
DIo has volcanoes.
Answer for Part: 0
false
false
false
true
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
7
1 pt What is the source of the energy that heats Io?
21. ASolar energy.
BRadioactivity.
CMotion of the moons.
DInfrared radiation from Jupiter.
Answer for Part: 0
false
false
true
false
1 pt [*] Hydrogen and helium make up more than 98% of
the mass of the proto solar system. Carbon, nitrogen, and
oxygen make up 1%. Metals and other elements make up
0.6%. Why did the hydrogen and helium that was in the
vicinity of the formingEarth not end up on the present Earth?
R1: It was too hot for these to condense. R2: The solid
earth was notmassive enough to hold on to these gases. R3:
The solar wind blew these gasses away. The main reasons
are.[Hint: Test your reasons with the case of Jupiter.]
22. AR1 & R2.
BR1, R2, & R3.
CR1 & R3.
DR2 & R3.
Answer for Part: 0
true
false
false
false
1 pt What happened to the metals that were in the vicinity
of the forming Earth?
23. AThey were driven off by the solar wind.
BThe Jovian planets accreted them.
CThey became asteroids.
DThey are primarily in the core of the earth.
Answer for Part: 0
false
false
false
true
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
8
1 pt A giant hand suddenly moves the earth farther from
the Sun. The temperature of the Earth cools. Which processwould certainly happen and cause the temperature to rise.
24. APlate tectonics become more active.
BThere is more plant matter.
CThere is less rain.
DVolcanoes are more active.
Answer for Part: 0
false
false
true
false
1 pt The space probe Odyssey found that the in regions
north and south of 60 degrees latitude the surface is 50%water
ice by volume. How is it that Odyssey was able to detect this
water?
25. AThe temperature of the surface is cooler where there
was so much ice.
BOdyssey detected the differences in the energy of
the neutrons coming off the surface of the planet.
CThe color of the surface is different where there is
water.
DThe Odyssey sent a surface probe down to collect
samples.
EThe density of the surface was greater where there
is no water.
Answer for Part: 0
false
true
false
false
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
26. AWater was removed from the atmosphere by chemical reactions with surface rock.
BUltraviolet light split the water molecules, and the
hyrdrogen then escaped to space.
CIt is frozen in craters near the poles.
DIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
Answer for Part: 0
false
false
false
true
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
9
1 pt Which of the following is not a general characteristic
of the four jovian planets in our solar system?
27. AThey are higher in average density than are the terrestrial planets.
BThey are composed of mainly hydrogen, helium,
and hydrogen compounds.
CThey are much more massive then any of the terrestrial planets.
DThey lack solid surfaces.
Answer for Part: 0
false
false
true
false
1 pt The planets near the sun have a high density because
28. AThe lighter materials could not condense because
the proto planet fell too far and became too hot.
BThe sun prevented the lighter materials from condensing.
CThe lighter materials escaped the planets gravity
DThe sun evaporated the lighter materials
Answer for Part: 0
true
false
false
false
1 pt The Hubble Space Telescope orbits the Earth, even
though it is far inside the Roche limit. The Hubble Space
telescope is not broken apart because
29. AThe density of the Space Telescope is too high.
BThe Roche limit will cause the Space Telescope to
break up after some time.
CGravity does not apply to weightless conditions.
Dthe Roche limit does not apply to something held
together by atomic bonds.
Answer for Part: 0
false
false
false
true
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
10
1 pt [*] The energy levels 1-4 of Hydrogen are 0, 10.2, 12.1,
and 12.8 electron volts (eV), repectively. The Hydrogen is so
cool that the electrons are all in level 1. The Hydrogen gas
absorbs photons of energy 12.1 eV. When the electrons lose
energy, light of
different energies will be emitted.
30. A2
B3
C1
Dmore than 3
CODE - EIJHFJ - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
11
1 pt
[*] Suppose a new comet is discovered with a period of 29.5
years, which is the same as that of Saturn. The orbit of
the comet is highly elliptical. Saturn is 9.5 AU from the
sun. Draw the orbits of the comet and Saturn. Be certain to
include the sun. Your drawing must show accurate relative
sizes.
Answer for Part: 0
false
true
false
false
1 pt [*] Do the lamps L & R at the front of the room emit
thermal (black body) radiation?
34. Leave blank on scoring form
Printed from LON-CAPA
31. AYes for both.
BNo for L; yes for R.
CNo for both.
DYes for L; no for R.
Answer for Part: 0
true
false
false
false
1 pt [*] While walking home around 9 pm, you see the moon
rising.
of the moon is lit.
32. ALess than half
BLittle
CHalf
DMore than half
EAlmost all
Answer for Part: 0
false
false
false
true
false
1 pt [*] A giant hand suddenly doubled the mass of the sun
and adjusted the motion of the earth to keep it in the same
path. The giant hand would have had to make the earth .
33. Amove slower
Bmove faster
Cmove the same
Answer for Part: 0
false
true
false
MSU
Licensed under GNU General Public License
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1
1 pt Which equation is the Roche limit for the case where
the moon and planet have the same density? [Use these equations as a reminder.]
2
1. AKE=1/2 m v , where v is the speed
BKE=3/2kT, where T is temperature.
CR=2.5Rplanet .
Dv2 >2GMplanet /Rplanet , where v is the speed.
Answer for Part: 0
false
false
true
false
1 pt The specific purpose of the 4.1-meter primary mirror
of the SOAR Telescope is to
2. Acollect light.
Btake pictures.
Canalyze light into its colors.
Drefract light.
Answer for Part: 0
true
false
false
false
1 pt To achieve the same angular resolution, a radio telescopes is much larger than an optical telescope because
3. Aradio telescopes must be more precise.
Bradio waves are weaker.
Cthe wavelength of radio waves is much longer.
Doptical telescopes must be more precise.
Answer for Part: 0
false
false
true
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
2
1 pt [*] Consider this hypothetical discovery, which consists
of three statements. S1: A planet is discovered beyond the
orbit of Pluto. S2: Its density is 5 times the density of water.
S3: It has many craters.would be very surprising.
4. AS3
BS2
CS1, S2, & S3
DS2 & S3
ENone of the statements
Answer for Part: 0
false
true
false
false
false
1 pt Which is not a moon of Jupiter?
5. AIo
BCallisto
CEuropa
DTitan
EGanymede
Answer for Part: 0
false
false
false
true
false
1 pt You are equiped with a suit that supplies air to breathe
and keeps you warm or cool. On which of these moons or
planets could you not land?
6. APluto
BSaturn
CCallisto
DMars
Answer for Part: 0
false
true
false
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
3
1 pt The planet that is fourth closest to the sun is
7. ASaturn.
BVenus.
CMars.
DJupiter.
EEarth.
1 pt Which one of these statements is true for the nucleus
of Halley’s comet?
Answer for Part: 0
true
false
false
false
false
1 pt Potassium 40, which decays into argon 40, is used to
figure out the age of meteorites. Why is there no argon 40 in
the meteor when it formed?
8. AArgon condenses at an extremely low temperature.
BNo argon 40 had been produced in the solar system
when the meteor formed.
CArgon collected in the massive asteroids.
DAll the argon collected in the jovian planets.
Answer for Part: 0
true
false
false
false
years.
9. A1 Billion
B65 Million
C13 Billion
D4.5 Billion
Answer for Part: 0
false
false
false
true
1 pt Whattriggered the collapse of the gas cloud that became the solar system.
10. AThe Big Bang
BA supernova, an exploding star
CGravity
DThe pressure of a massive star
Answer for Part: 0
false
true
false
false
4
11. AIt is very black.
BIts shape is roughly spherical.
CIt is made mostly of carbon.
DIt is about the size of Michigan.
EIts surface is uniform.
Answer for Part: 0
false
false
true
false
false
1 pt The age of the solar system is
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1 pt Why does the tail of a comet point away from the sun?
12. AThe magnetic field of the sun keeps the tail pointing
away.
BConservation of angular momentum keeps the tail
pointing away.
CGas from the comet, heated by the sun, pushes the
tail away from the sun.
DThe solar wind blows gas and dust away from the
sun.
Answer for Part: 0
false
false
false
true
1 pt Which of the following statements comparing the jovian interiors is not thought to be true?
13. AThey all have cores of roughly the same mass.
BDeep inside them, they all have pressures far higher
than that found on the bottom of the ocean on Earth.
CThey all have the same exact set of internal layers,
though these layers differ in size.
DThey all have cores that contain at least some rock
and metal.
Answer for Part: 0
false
false
true
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
5
1 pt The clouds on the surface of Jupiter are not made of
condensed
14. Ahydrogen.
Bammonium hydrosulfide.
Cammonia.
Dwater.
Answer for Part: 0
true
false
false
false
1 pt Why can the material in the rings of Jovian planets
not collect to form moons?
15. AThere is not enough material
BThe rings are not made of sticky material
CThe rings are too thin
DThe rings are inside the Roche limit
Answer for Part: 0
false
false
false
true
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
16. AIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
BWater was removed from the atmosphere by chemical reactions with surface rock.
CUltraviolet light split the water molecules, and the
hydrogen then escaped to space.
DIt is frozen in craters near the poles.
Answer for Part: 0
false
false
true
false
1 pt Astronomers believe that Mars had liquid water in the
past because
17. Aphotographs show dry riverbeds.
Bthe space probe Odyssey found water ice.
Cmicroscopic fossils were found.
Dphotographs show smooth rocks
Answer for Part: 0
true
false
false
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
6
1 pt Why does Venus have so much more atmospheric gas
than Earth?
18. ABecause of its lack of magnetic field, Venus has been
able to gain gas through the process of bombardment,
while Earth has not gained gas in this way.
BVenus has gained much more gas through outgassing than has Earth.
CEarth has lost much more gas to thermal escape
than has Venus.
DEarth has lost much more atmospheric gas than
Venus, primarily to condensation of water vapor into
liquid water and to chemical reactions that make carbonate rock.
Answer for Part: 0
false
false
false
true
3 pt [*] Uranus was able attract helium (mass=4) and
molecular hydrogen (mass=2) to the core, which formed first.
Assume that Uranus cannot keep a gas with mass=1. Imagine a hypothetical planet core formed at the same location
with the same size and 1/10 as much mass. What is the
minimum mass of the gas that this hypothetical planet can
attract and keep?
19. A4
B20
C10
D2
E40
Answer for Part: 0
false
false
true
false
false
1 pt Which is evidence that Io, one of Jupiter’s moons, has
a hot interior.
20. AIo has volcanoes.
BJupiter radiates a lot of infrared light.
CIo has high radioactivity.
DIo is close to Jupiter.
Answer for Part: 0
true
false
false
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
7
1 pt What is the source of the energy that heats Io?
21. ARadioactivity.
BSolar energy.
CMotion of the moons.
DInfrared radiation from Jupiter.
Answer for Part: 0
false
false
true
false
1 pt [*] Hydrogen and helium make up more than 98% of
the mass of the proto solar system. Carbon, nitrogen, and
oxygen make up 1%. Metals and other elements make up
0.6%. Why did the hydrogen and helium that was in the
vicinity of the formingEarth not end up on the present Earth?
R1: It was too hot for these to condense. R2: The solid
earth was notmassive enough to hold on to these gases. R3:
The solar wind blew these gasses away. The main reasons
are.[Hint: Test your reasons with the case of Jupiter.]
22. AR2 & R3.
BR1 & R2.
CR1 & R3.
DR1, R2, & R3.
Answer for Part: 0
false
true
false
false
1 pt What happened to the metals that were in the vicinity
of the forming Earth?
23. AThey are primarily in the core of the earth.
BThe Jovian planets accreted them.
CThey were driven off by the solar wind.
DThey became asteroids.
Answer for Part: 0
true
false
false
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
8
1 pt A giant hand suddenly moves the earth farther from
the Sun. The temperature of the Earth cools. Which processwould certainly happen and cause the temperature to rise.
24. AVolcanoes are more active.
BThere is more plant matter.
CPlate tectonics become more active.
DThere is less rain.
Answer for Part: 0
false
false
false
true
1 pt The space probe Odyssey found that the in regions
north and south of 60 degrees latitude the surface is 50%water
ice by volume. How is it that Odyssey was able to detect this
water?
25. AThe color of the surface is different where there is
water.
BThe Odyssey sent a surface probe down to collect
samples.
COdyssey detected the differences in the energy of
the neutrons coming off the surface of the planet.
DThe density of the surface was greater where there
is no water.
EThe temperature of the surface is cooler where there
was so much ice.
Answer for Part: 0
false
false
true
false
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
26. AIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
BUltraviolet light split the water molecules, and the
hyrdrogen then escaped to space.
CWater was removed from the atmosphere by chemical reactions with surface rock.
DIt is frozen in craters near the poles.
Answer for Part: 0
true
false
false
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
9
1 pt Which of the following is not a general characteristic
of the four jovian planets in our solar system?
27. AThey lack solid surfaces.
BThey are composed of mainly hydrogen, helium,
and hydrogen compounds.
CThey are much more massive then any of the terrestrial planets.
DThey are higher in average density than are the
terrestrial planets.
Answer for Part: 0
false
false
true
false
1 pt The planets near the sun have a high density because
28. AThe sun evaporated the lighter materials
BThe lighter materials could not condense because
the proto planet fell too far and became too hot.
CThe sun prevented the lighter materials from condensing.
DThe lighter materials escaped the planets gravity
Answer for Part: 0
false
true
false
false
1 pt The Hubble Space Telescope orbits the Earth, even
though it is far inside the Roche limit. The Hubble Space
telescope is not broken apart because
29. Athe Roche limit does not apply to something held
together by atomic bonds.
BGravity does not apply to weightless conditions.
CThe density of the Space Telescope is too high.
DThe Roche limit will cause the Space Telescope to
break up after some time.
Answer for Part: 0
true
false
false
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
10
1 pt [*] The energy levels 1-4 of Hydrogen are 0, 10.2, 12.1,
and 12.8 electron volts (eV), repectively. The Hydrogen is so
cool that the electrons are all in level 1. The Hydrogen gas
absorbs photons of energy 12.1 eV. When the electrons lose
energy, light of
different energies will be emitted.
30. A1
Bmore than 3
C3
D2
Answer for Part: 0
false
false
true
false
1 pt [*] Do the lamps L & R at the front of the room emit
thermal (black body) radiation?
31. AYes for both.
BNo for both.
CYes for L; no for R.
DNo for L; yes for R.
Answer for Part: 0
true
false
false
false
1 pt [*] While walking home around 9 pm, you see the moon
rising.
of the moon is lit.
32. AHalf
BLittle
CLess than half
DAlmost all
EMore than half
Answer for Part: 0
false
false
false
false
true
1 pt [*] A giant hand suddenly doubled the mass of the sun
and adjusted the motion of the earth to keep it in the same
path. The giant hand would have had to make the earth .
33. Amove the same
Bmove faster
Cmove slower
Answer for Part: 0
false
true
false
CODE - FADHEH - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
11
1 pt
[*] Suppose a new comet is discovered with a period of 29.5
years, which is the same as that of Saturn. The orbit of
the comet is highly elliptical. Saturn is 9.5 AU from the
sun. Draw the orbits of the comet and Saturn. Be certain to
include the sun. Your drawing must show accurate relative
sizes.
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1
1 pt Which equation is the Roche limit for the case where
the moon and planet have the same density? [Use these equations as a reminder.]
1. AKE=1/2 m v2 , where v is the speed
BKE=3/2kT, where T is temperature.
Cv2 >2GMplanet /Rplanet , where v is the speed.
DR=2.5Rplanet .
Answer for Part: 0
false
false
false
true
34. Leave blank on scoring form
Printed from LON-CAPA
MSU
Licensed under GNU General Public License
1 pt The specific purpose of the 4.1-meter primary mirror
of the SOAR Telescope is to
2. Arefract light.
Bcollect light.
Ctake pictures.
Danalyze light into its colors.
Answer for Part: 0
false
true
false
false
1 pt To achieve the same angular resolution, a radio telescopes is much larger than an optical telescope because
3. Aradio telescopes must be more precise.
Bradio waves are weaker.
Coptical telescopes must be more precise.
Dthe wavelength of radio waves is much longer.
Answer for Part: 0
false
false
false
true
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
2
1 pt [*] Consider this hypothetical discovery, which consists
of three statements. S1: A planet is discovered beyond the
orbit of Pluto. S2: Its density is 5 times the density of water.
S3: It has many craters.would be very surprising.
4. AS2 & S3
BS2
CS3
DNone of the statements
ES1, S2, & S3
Answer for Part: 0
false
true
false
false
false
1 pt Which is not a moon of Jupiter?
5. AIo
BCallisto
CEuropa
DGanymede
ETitan
Answer for Part: 0
false
false
false
false
true
1 pt You are equiped with a suit that supplies air to breathe
and keeps you warm or cool. On which of these moons or
planets could you not land?
6. APluto
BSaturn
CCallisto
DMars
Answer for Part: 0
false
true
false
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
3
1 pt The planet that is fourth closest to the sun is
7. AVenus.
BEarth.
CSaturn.
DMars.
EJupiter.
Answer for Part: 0
false
false
false
true
false
1 pt Potassium 40, which decays into argon 40, is used to
figure out the age of meteorites. Why is there no argon 40 in
the meteor when it formed?
8. AArgon condenses at an extremely low temperature.
BArgon collected in the massive asteroids.
CNo argon 40 had been produced in the solar system
when the meteor formed.
DAll the argon collected in the jovian planets.
Answer for Part: 0
true
false
false
false
1 pt The age of the solar system is
years.
9. A4.5 Billion
B65 Million
C1 Billion
D13 Billion
Answer for Part: 0
true
false
false
false
1 pt Whattriggered the collapse of the gas cloud that became the solar system.
10. AThe Big Bang
BGravity
CA supernova, an exploding star
DThe pressure of a massive star
Answer for Part: 0
false
false
true
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
4
1 pt Which one of these statements is true for the nucleus
of Halley’s comet?
11. AIts shape is roughly spherical.
BIt is very black.
CIts surface is uniform.
DIt is made mostly of carbon.
EIt is about the size of Michigan.
Answer for Part: 0
false
true
false
false
false
1 pt Why does the tail of a comet point away from the sun?
12. AConservation of angular momentum keeps the tail
pointing away.
BThe magnetic field of the sun keeps the tail pointing
away.
CGas from the comet, heated by the sun, pushes the
tail away from the sun.
DThe solar wind blows gas and dust away from the
sun.
Answer for Part: 0
false
false
false
true
1 pt Which of the following statements comparing the jovian interiors is not thought to be true?
13. AThey all have cores of roughly the same mass.
BDeep inside them, they all have pressures far higher
than that found on the bottom of the ocean on Earth.
CThey all have the same exact set of internal layers,
though these layers differ in size.
DThey all have cores that contain at least some rock
and metal.
Answer for Part: 0
false
false
true
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
5
1 pt The clouds on the surface of Jupiter are not made of
condensed
14. Aammonium hydrosulfide.
Bhydrogen.
Cwater.
Dammonia.
Answer for Part: 0
false
true
false
false
1 pt Why can the material in the rings of Jovian planets
not collect to form moons?
15. AThe rings are not made of sticky material
BThe rings are too thin
CThere is not enough material
DThe rings are inside the Roche limit
Answer for Part: 0
false
false
false
true
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
16. AIt is frozen in craters near the poles.
BIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
CUltraviolet light split the water molecules, and the
hydrogen then escaped to space.
DWater was removed from the atmosphere by chemical reactions with surface rock.
Answer for Part: 0
false
false
true
false
1 pt Astronomers believe that Mars had liquid water in the
past because
17. Aphotographs show dry riverbeds.
Bphotographs show smooth rocks
Cmicroscopic fossils were found.
Dthe space probe Odyssey found water ice.
Answer for Part: 0
true
false
false
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
6
1 pt Why does Venus have so much more atmospheric gas
than Earth?
18. AVenus has gained much more gas through outgassing than has Earth.
BEarth has lost much more gas to thermal escape
than has Venus.
CBecause of its lack of magnetic field, Venus has been
able to gain gas through the process of bombardment,
while Earth has not gained gas in this way.
DEarth has lost much more atmospheric gas than
Venus, primarily to condensation of water vapor into
liquid water and to chemical reactions that make carbonate rock.
Answer for Part: 0
false
false
false
true
3 pt [*] Uranus was able attract helium (mass=4) and
molecular hydrogen (mass=2) to the core, which formed first.
Assume that Uranus cannot keep a gas with mass=1. Imagine a hypothetical planet core formed at the same location
with the same size and 1/10 as much mass. What is the
minimum mass of the gas that this hypothetical planet can
attract and keep?
19. A4
B2
C10
D20
E40
Answer for Part: 0
false
false
true
false
false
1 pt Which is evidence that Io, one of Jupiter’s moons, has
a hot interior.
20. AIo has volcanoes.
BIo is close to Jupiter.
CIo has high radioactivity.
DJupiter radiates a lot of infrared light.
Answer for Part: 0
true
false
false
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
7
1 pt What is the source of the energy that heats Io?
21. ARadioactivity.
BSolar energy.
CInfrared radiation from Jupiter.
DMotion of the moons.
Answer for Part: 0
false
false
false
true
1 pt [*] Hydrogen and helium make up more than 98% of
the mass of the proto solar system. Carbon, nitrogen, and
oxygen make up 1%. Metals and other elements make up
0.6%. Why did the hydrogen and helium that was in the
vicinity of the formingEarth not end up on the present Earth?
R1: It was too hot for these to condense. R2: The solid
earth was notmassive enough to hold on to these gases. R3:
The solar wind blew these gasses away. The main reasons
are.[Hint: Test your reasons with the case of Jupiter.]
22. AR2 & R3.
BR1 & R2.
CR1 & R3.
DR1, R2, & R3.
Answer for Part: 0
false
true
false
false
1 pt What happened to the metals that were in the vicinity
of the forming Earth?
23. AThey are primarily in the core of the earth.
BThey were driven off by the solar wind.
CThey became asteroids.
DThe Jovian planets accreted them.
Answer for Part: 0
true
false
false
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
8
1 pt A giant hand suddenly moves the earth farther from
the Sun. The temperature of the Earth cools. Which processwould certainly happen and cause the temperature to rise.
24. APlate tectonics become more active.
BThere is more plant matter.
CVolcanoes are more active.
DThere is less rain.
Answer for Part: 0
false
false
false
true
1 pt The space probe Odyssey found that the in regions
north and south of 60 degrees latitude the surface is 50%water
ice by volume. How is it that Odyssey was able to detect this
water?
25. AThe Odyssey sent a surface probe down to collect
samples.
BThe temperature of the surface is cooler where there
was so much ice.
COdyssey detected the differences in the energy of
the neutrons coming off the surface of the planet.
DThe density of the surface was greater where there
is no water.
EThe color of the surface is different where there is
water.
Answer for Part: 0
false
false
true
false
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
26. AIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
BUltraviolet light split the water molecules, and the
hyrdrogen then escaped to space.
CIt is frozen in craters near the poles.
DWater was removed from the atmosphere by chemical reactions with surface rock.
Answer for Part: 0
true
false
false
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
9
1 pt Which of the following is not a general characteristic
of the four jovian planets in our solar system?
27. AThey lack solid surfaces.
BThey are composed of mainly hydrogen, helium,
and hydrogen compounds.
CThey are much more massive then any of the terrestrial planets.
DThey are higher in average density than are the
terrestrial planets.
Answer for Part: 0
false
false
true
false
1 pt The planets near the sun have a high density because
28. AThe sun evaporated the lighter materials
BThe lighter materials could not condense because
the proto planet fell too far and became too hot.
CThe sun prevented the lighter materials from condensing.
DThe lighter materials escaped the planets gravity
Answer for Part: 0
false
true
false
false
1 pt The Hubble Space Telescope orbits the Earth, even
though it is far inside the Roche limit. The Hubble Space
telescope is not broken apart because
29. Athe Roche limit does not apply to something held
together by atomic bonds.
BThe Roche limit will cause the Space Telescope to
break up after some time.
CGravity does not apply to weightless conditions.
DThe density of the Space Telescope is too high.
Answer for Part: 0
true
false
false
false
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
10
1 pt [*] The energy levels 1-4 of Hydrogen are 0, 10.2, 12.1,
and 12.8 electron volts (eV), repectively. The Hydrogen is so
cool that the electrons are all in level 1. The Hydrogen gas
absorbs photons of energy 12.1 eV. When the electrons lose
energy, light of
different energies will be emitted.
30. A1
Bmore than 3
C3
D2
CODE - HBGGFD - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
11
1 pt
[*] Suppose a new comet is discovered with a period of 29.5
years, which is the same as that of Saturn. The orbit of
the comet is highly elliptical. Saturn is 9.5 AU from the
sun. Draw the orbits of the comet and Saturn. Be certain to
include the sun. Your drawing must show accurate relative
sizes.
Answer for Part: 0
false
false
true
false
1 pt [*] Do the lamps L & R at the front of the room emit
thermal (black body) radiation?
34. Leave blank on scoring form
Printed from LON-CAPA
31. ANo for L; yes for R.
BYes for both.
CYes for L; no for R.
DNo for both.
Answer for Part: 0
false
true
false
false
1 pt [*] While walking home around 9 pm, you see the moon
rising.
of the moon is lit.
32. AMore than half
BAlmost all
CHalf
DLittle
ELess than half
Answer for Part: 0
true
false
false
false
false
1 pt [*] A giant hand suddenly doubled the mass of the sun
and adjusted the motion of the earth to keep it in the same
path. The giant hand would have had to make the earth .
33. Amove the same
Bmove slower
Cmove faster
Answer for Part: 0
false
false
true
MSU
Licensed under GNU General Public License
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1
1 pt Which equation is the Roche limit for the case where
the moon and planet have the same density? [Use these equations as a reminder.]
1. AKE=3/2kT, where T is temperature.
BR=2.5Rplanet .
CKE=1/2 m v2 , where v is the speed
Dv2 >2GMplanet /Rplanet , where v is the speed.
Answer for Part: 0
false
true
false
false
1 pt The specific purpose of the 4.1-meter primary mirror
of the SOAR Telescope is to
2. Arefract light.
Btake pictures.
Canalyze light into its colors.
Dcollect light.
Answer for Part: 0
false
false
false
true
1 pt To achieve the same angular resolution, a radio telescopes is much larger than an optical telescope because
3. Aradio waves are weaker.
Bthe wavelength of radio waves is much longer.
Cradio telescopes must be more precise.
Doptical telescopes must be more precise.
Answer for Part: 0
false
true
false
false
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
2
1 pt [*] Consider this hypothetical discovery, which consists
of three statements. S1: A planet is discovered beyond the
orbit of Pluto. S2: Its density is 5 times the density of water.
S3: It has many craters.would be very surprising.
4. ANone of the statements
BS1, S2, & S3
CS2 & S3
DS3
ES2
Answer for Part: 0
false
false
false
false
true
1 pt Which is not a moon of Jupiter?
5. ACallisto
BGanymede
CTitan
DIo
EEuropa
Answer for Part: 0
false
false
true
false
false
1 pt You are equiped with a suit that supplies air to breathe
and keeps you warm or cool. On which of these moons or
planets could you not land?
6. AMars
BPluto
CCallisto
DSaturn
Answer for Part: 0
false
false
false
true
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
3
1 pt The planet that is fourth closest to the sun is
7. AMars.
BJupiter.
CVenus.
DEarth.
ESaturn.
1 pt Which one of these statements is true for the nucleus
of Halley’s comet?
Answer for Part: 0
false
false
false
true
false
1 pt Potassium 40, which decays into argon 40, is used to
figure out the age of meteorites. Why is there no argon 40 in
the meteor when it formed?
8. ANo argon 40 had been produced in the solar system
when the meteor formed.
BArgon condenses at an extremely low temperature.
CArgon collected in the massive asteroids.
DAll the argon collected in the jovian planets.
Answer for Part: 0
false
true
false
false
years.
9. A13 Billion
B1 Billion
C4.5 Billion
D65 Million
Answer for Part: 0
false
false
true
false
1 pt Whattriggered the collapse of the gas cloud that became the solar system.
10. AA supernova, an exploding star
BGravity
CThe pressure of a massive star
DThe Big Bang
Answer for Part: 0
true
false
false
false
4
11. AIt is made mostly of carbon.
BIt is about the size of Michigan.
CIts shape is roughly spherical.
DIt is very black.
EIts surface is uniform.
Answer for Part: 0
true
false
false
false
false
1 pt The age of the solar system is
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
1 pt Why does the tail of a comet point away from the sun?
12. AGas from the comet, heated by the sun, pushes the
tail away from the sun.
BThe solar wind blows gas and dust away from the
sun.
CThe magnetic field of the sun keeps the tail pointing
away.
DConservation of angular momentum keeps the tail
pointing away.
Answer for Part: 0
false
true
false
false
1 pt Which of the following statements comparing the jovian interiors is not thought to be true?
13. AThey all have the same exact set of internal layers,
though these layers differ in size.
BDeep inside them, they all have pressures far higher
than that found on the bottom of the ocean on Earth.
CThey all have cores of roughly the same mass.
DThey all have cores that contain at least some rock
and metal.
Answer for Part: 0
true
false
false
false
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
5
1 pt The clouds on the surface of Jupiter are not made of
condensed
14. Awater.
Bammonia.
Cammonium hydrosulfide.
Dhydrogen.
Answer for Part: 0
false
false
false
true
1 pt Why can the material in the rings of Jovian planets
not collect to form moons?
15. AThe rings are too thin
BThe rings are not made of sticky material
CThe rings are inside the Roche limit
DThere is not enough material
Answer for Part: 0
false
false
true
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
16. AUltraviolet light split the water molecules, and the
hydrogen then escaped to space.
BWater was removed from the atmosphere by chemical reactions with surface rock.
CIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
DIt is frozen in craters near the poles.
Answer for Part: 0
true
false
false
false
1 pt Astronomers believe that Mars had liquid water in the
past because
17. Amicroscopic fossils were found.
Bthe space probe Odyssey found water ice.
Cphotographs show dry riverbeds.
Dphotographs show smooth rocks
Answer for Part: 0
false
false
true
false
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
6
1 pt Why does Venus have so much more atmospheric gas
than Earth?
18. AEarth has lost much more gas to thermal escape
than has Venus.
BEarth has lost much more atmospheric gas than
Venus, primarily to condensation of water vapor into
liquid water and to chemical reactions that make carbonate rock.
CVenus has gained much more gas through outgassing than has Earth.
DBecause of its lack of magnetic field, Venus has been
able to gain gas through the process of bombardment,
while Earth has not gained gas in this way.
Answer for Part: 0
false
true
false
false
3 pt [*] Uranus was able attract helium (mass=4) and
molecular hydrogen (mass=2) to the core, which formed first.
Assume that Uranus cannot keep a gas with mass=1. Imagine a hypothetical planet core formed at the same location
with the same size and 1/10 as much mass. What is the
minimum mass of the gas that this hypothetical planet can
attract and keep?
19. A10
B20
C2
D40
E4
Answer for Part: 0
true
false
false
false
false
1 pt Which is evidence that Io, one of Jupiter’s moons, has
a hot interior.
20. AIo has high radioactivity.
BJupiter radiates a lot of infrared light.
CIo has volcanoes.
DIo is close to Jupiter.
Answer for Part: 0
false
false
true
false
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
7
1 pt What is the source of the energy that heats Io?
21. AInfrared radiation from Jupiter.
BMotion of the moons.
CSolar energy.
DRadioactivity.
Answer for Part: 0
false
true
false
false
1 pt [*] Hydrogen and helium make up more than 98% of
the mass of the proto solar system. Carbon, nitrogen, and
oxygen make up 1%. Metals and other elements make up
0.6%. Why did the hydrogen and helium that was in the
vicinity of the formingEarth not end up on the present Earth?
R1: It was too hot for these to condense. R2: The solid
earth was notmassive enough to hold on to these gases. R3:
The solar wind blew these gasses away. The main reasons
are.[Hint: Test your reasons with the case of Jupiter.]
22. AR1 & R2.
BR1, R2, & R3.
CR1 & R3.
DR2 & R3.
Answer for Part: 0
true
false
false
false
1 pt What happened to the metals that were in the vicinity
of the forming Earth?
23. AThey became asteroids.
BThey were driven off by the solar wind.
CThey are primarily in the core of the earth.
DThe Jovian planets accreted them.
Answer for Part: 0
false
false
true
false
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
8
1 pt A giant hand suddenly moves the earth farther from
the Sun. The temperature of the Earth cools. Which processwould certainly happen and cause the temperature to rise.
24. AThere is more plant matter.
BThere is less rain.
CVolcanoes are more active.
DPlate tectonics become more active.
Answer for Part: 0
false
true
false
false
1 pt The space probe Odyssey found that the in regions
north and south of 60 degrees latitude the surface is 50%water
ice by volume. How is it that Odyssey was able to detect this
water?
25. AOdyssey detected the differences in the energy of
the neutrons coming off the surface of the planet.
BThe density of the surface was greater where there
is no water.
CThe Odyssey sent a surface probe down to collect
samples.
DThe color of the surface is different where there is
water.
EThe temperature of the surface is cooler where there
was so much ice.
Answer for Part: 0
true
false
false
false
false
1 pt Which of the following best explains what we think
happened to outgassed water on Venus?
26. AIt is frozen in craters near the poles.
BWater was removed from the atmosphere by chemical reactions with surface rock.
CUltraviolet light split the water molecules, and the
hyrdrogen then escaped to space.
DIt turned into carbon dioxide by reacting with nitrogen in Venus’s atmosphere.
Answer for Part: 0
false
false
false
true
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
9
1 pt Which of the following is not a general characteristic
of the four jovian planets in our solar system?
27. AThey are composed of mainly hydrogen, helium,
and hydrogen compounds.
BThey are much more massive then any of the terrestrial planets.
CThey lack solid surfaces.
DThey are higher in average density than are the
terrestrial planets.
Answer for Part: 0
false
true
false
false
1 pt The planets near the sun have a high density because
28. AThe lighter materials escaped the planets gravity
BThe sun evaporated the lighter materials
CThe sun prevented the lighter materials from condensing.
DThe lighter materials could not condense because
the proto planet fell too far and became too hot.
Answer for Part: 0
false
false
false
true
1 pt The Hubble Space Telescope orbits the Earth, even
though it is far inside the Roche limit. The Hubble Space
telescope is not broken apart because
29. AThe density of the Space Telescope is too high.
BThe Roche limit will cause the Space Telescope to
break up after some time.
Cthe Roche limit does not apply to something held
together by atomic bonds.
DGravity does not apply to weightless conditions.
Answer for Part: 0
false
false
true
false
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
10
1 pt [*] The energy levels 1-4 of Hydrogen are 0, 10.2, 12.1,
and 12.8 electron volts (eV), repectively. The Hydrogen is so
cool that the electrons are all in level 1. The Hydrogen gas
absorbs photons of energy 12.1 eV. When the electrons lose
energy, light of
different energies will be emitted.
30. A3
Bmore than 3
C1
D2
Answer for Part: 0
true
false
false
false
1 pt [*] Do the lamps L & R at the front of the room emit
thermal (black body) radiation?
31. AYes for L; no for R.
BNo for both.
CNo for L; yes for R.
DYes for both.
Answer for Part: 0
false
false
false
true
1 pt [*] While walking home around 9 pm, you see the moon
rising.
of the moon is lit.
32. ALittle
BLess than half
CMore than half
DAlmost all
EHalf
Answer for Part: 0
false
false
true
false
false
1 pt [*] A giant hand suddenly doubled the mass of the sun
and adjusted the motion of the earth to keep it in the same
path. The giant hand would have had to make the earth .
33. Amove faster
Bmove slower
Cmove the same
Answer for Part: 0
true
false
false
CODE - HECJDE - ISP 205, sec 1 - Visions of the
Universe - Spring 2005
Test2
Name:
11
1 pt
[*] Suppose a new comet is discovered with a period of 29.5
years, which is the same as that of Saturn. The orbit of
the comet is highly elliptical. Saturn is 9.5 AU from the
sun. Draw the orbits of the comet and Saturn. Be certain to
include the sun. Your drawing must show accurate relative
sizes.
34. Leave blank on scoring form
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