Download Unit 1 Test Review Packet

KEY – use this to check your answers, then study from it
Name:_____________________________________________ Pd:________ Date:___________
Unit 1 Test Review Packet
Go through this packet and try to answer everything first without any notes or help. Once you have gone
through the whole packet using only your knowledge then you may go back through and use your notes and other
resources to help you fill in the rest of the packet.
1) What is the largest thing in the Solar System?
The Sun
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2) How many stars are in the Solar System?
Only One, the Sun
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3) What is the closest star in our Solar System?
The Sun
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4) One complete orbit of Earth around the sun takes about
a. one rotation.
b. one season.
c. one year.
d. one eclipse.
5) One rotation of Earth on its axis takes about
a. 365 days.
b. 6 months.
c. 24 hours.
d. 1 month.
6) Earth has seasons because
a. it rotates on its axis.
b. the distance between Earth and the sun changes.
c. its axis is tilted as it moves around the sun.
d. the temperature of the sun changes.
7) Day and night are caused by
a. the tilt of Earth’s axis.
b. Earth’s revolution around the sun.
c. eclipses.
d. Earth’s rotation on its axis.
8) Because the moon rotates once for each revolution around Earth,
a. you see some phases more than others.
b. a different side of the moon faces Earth each day.
c. you never see the far side of the moon from Earth.
d. the far side of the moon is visible only during the full moon phase.
C
C
C
D
C
9) What are the two factors that affect gravity? Explain how they change the force of gravity.
Two factors are 1) distance between the objects and 2) the mass of the objects
The closer the objects are together the stronger the force of gravity, the farther apart they are
the weaker the gravity.
The more massive (bigger) the objects are, the stronger the force of gravity, the less massive
(smaller) the weaker the force of gravity.
Complete the Table
Terrestrial
Gas Giant
4 INNER planets
Four planets closest to
the sun
Mercury, Venus, Earth,
Mars
4 OUTER planets
Four planets farthest
from the sun
Jupiter, Saturn, Uranus,
Neptune
Relative size
comparison
Relatively SMALL
Relatively LARGE
Relative strength of
their gravitational pull
comparison
Composition
Relatively WEAK
gravitational force
Relatively STRONG
gravitational force
Rocky, solid surface
Made of gas, no solid
surface
Relatively FEW moons
Large number of moons,
MANY MOONS
Location in the Solar
System
Which 4 planets
Generally how many
moons
Draw the relative positions of the Sun, Earth and Moon for a Solar and
Lunar Eclipse below. All you need to show are 3 circles, one labeled “S”
for the Sun, “E” for Earth, and “M” for moon. (*DRAWING IS NOT TO SCALE)
Solar Eclipse:
S
M
E
Lunar Eclipse:
S
E
M
Complete the Table
Origin
Size
(relatively
speaking)
Composition
Comets
Asteroids
From the Kuiper belt
From the Asteroid belt,
located between Mars
& Jupiter
Come from either comets
or asteroids
Smaller than a planet, Smaller than a planet,
Smaller than a planet,
larger than a
larger than a meteoroid comet and asteroid.
meteoroid
Made of ice, frozen
gasses, some dust &
rock
Made of rock
Orbit
(circular or
more oval
shaped)
Meteoroids
OVAL shaped orbit
Circular shaped orbit
Depends, if from a comet,
like a comet. If from an
asteroid, like an asteroid.
Not really applicable. It is
crashing towards Earth and
has been knocked out of
orbit.
10) What causes the different climates that you find on the Earth?
Because Earth is the shape of a sphere, it causes sunlight to hit Earth at different angles.
Light hits Earth most directly (90 ° angle) at the equator, and has more energy per
square km. Light hits Earth least directly at the poles (20 ° angle) and has the least
amount of energy per square km.
11) What is the reason for the seasons?
Because Earth is tilted on its axis 23.5°, it causes the angle of incoming sunlight to
change as the Earth orbits around the sun. In the summer, sunlight is more direct
(closer to 90°) and it gives more heat energy per square km. In the winter, sunlight is
less direct (closer to 20°) and it gives less heat energy per square km.
2
5
7
8
3
6
4
1
F&G
12) Which two phases are gibbous moons?
13) Number the phases of the moon in the order that they occur, beginning with the new moon as number 1.
H, A, E, G, B, F, E, D
A is a waxing crescent, D is a waning crescent
Remember waxing phase look like a “D”, and waning phase look like a “C”
Remember Bugs Bunny and “Whats up DOC?” The moon starts out looking like
D’s, then O’s, then C’s.
14) What are the phases shown in A and D called?
15) Which phase does it have to be for a solar eclipse to occur?
New Moon
Label what season it is for both hemisphere at each position in the Earth’s Orbit
Fall
Winter
Summer
Spring
Spring
Summer
Fall
Winter