Download 1. Which of the following statements does not describe Jupiter? A. It

1. Which of the following statements does not describe Jupiter?
A. It is the largest planet in the solar system.
B. It has a stormy atmosphere.
C. It emits radio waves.
D. Jupiter and its Galilean satellites resemble a miniature solar system.
E. All of them correctly describe Jupiter.
2. The most massive jovian planet is
A. Jupiter.
B. Saturn.
C. Uranus.
D. Pluto.
E. Applicable to more than one planet listed.
3. Most of the material in Jupiter is
A. silicates.
B. iron.
C. water.
D. nitrogen.
E. none of the above are correct.
4. A remarkable discovery about the rings of Saturn made by the Voyager probes
was that the rings
A. are circular.
B. are made of tiny particles.
C. orbit around the planet.
D. are very thin.
E. consist of hundreds of separate rings.
5. What are the two most abundant gases in the atmosphere of Saturn?
A. Methane and water vapor.
B. Methane and ammonia.
C. Nitrogen and oxygen.
D. Helium and hydrogen.
6. What is particularly noteworthy about Titan?
A. It has a thick atmosphere.
B. It has volcanoes.
C. It has a very large magnetic field.
D. It is the only satellite with rings around it.
7. The rings of Saturn are probably made of
A. hot gas bound to the planet by gravity and inside Roche's limit.
B. chunks of rock many miles in diameter captured from the asteroid belt.
C. an immense solid disk of ice partially melted at Cassini's division by heat
generated by Saturn.
D. numerous small icy pieces, yards to inches in diameter, each moving in its own
orbit.
E. none of the above.
8. Why do astronomers strongly suspect that there is an ocean of liquid water
beneath the icy surface of Europa?
A. The surface shows many deep impact craters.
B. The surface is broken into many pieces that resemble arctic ice fields.
C. Geysers have been seen erupting on Europa.
D. There are gaps in the icy surface through which liquid water has been seen.
9. The collision of Comet Shoemaker-Levy 9 with Jupiter was of special interest to
planetary astronomers because such a collision
A. produced really neat fireworks that caused radio black-outs on Earth.
B. dredged up deep-lying material which helped astronomers to understand
Jupiter's atmosphere.
C. destroyed several of Jupiter's Moons.
D. changed Jupiter's orbit.
E. none of the above.
10. Uranus is the planet
A. at this time furthest from the Sun.
B. with the lowest density.
C. strongly marked with belts and zones.
D. whose Moons orbit highly inclined to the ecliptic.
E. that is icy with a thin methane atmosphere.
11. The two objects that orbit each other with the same face toward each other are
A. Pluto and Charon.
B. Neptune and Triton.
C. Saturn and Titan.
D. Jupiter and Io.
E. Earth and Moon.
12. The odd tilt to Uranus' rotation axis may have been caused by
A. the asteroid Gaspra passing so close to Uranus that its gravity pulled it over.
B. a collision with a large planetesimal during its formation.
C. the Sun's gravity pulling it over.
D. Jupiter's gravity.
E. the event that tossed Pluto out of its system of Moons.
13. The rings seen around the Jovian planets lie
A. inside the planet's upper atmosphere.
B. inside the planet's Roche Limit.
C. near the planet's second orbit focus.
D. at the place where the planet's and Sun's gravity cancel out exactly.
E. None of the above.
14. The first planet to be discovered by a mathematical prediction was
A. Jupiter.
B. Saturn.
C. Uranus.
D. Neptune.
E. Pluto.
15. A distinctive feature that sets Triton apart from other large Moons is
A. its retrograde orbital motion.
B. its size.
C. the composition of its interior.
D. its density.
16. How could we explain the existence of iron-rich and of silicate-rich asteroids?
A. Iron asteroids formed in the areas of the solar nebula where only iron could
condense
B. Iron asteroids formed in the inner part of the belt, because iron is attracted more
strongly by the Sun
C. Iron asteroids originate mostly from volcanic eruptions
D. Iron asteroids come from the cores of differentiated asteroids that broke up by
collision, and the silicates from the crust.
17. Which of the following is true about comet tails?
A. They always point away from the Sun
B. They can exceed 100,000,000 km in size
C. Their light comes from dust particles reflecting sunlight and also by
fluorescence of gas molecules
D. Their shape is determined by the Sun’s radiation pressure and the solar wind,
which can curve the dust tail
E. All of the above.
18. Which of the following is true about the nucleus of a comet?
A. Its size is about 10 km
B. It contains most of the comet’s mass
C. It has an irregular shape
D. It consists of fluffy icy material
E. All of the above.
19. What proves the existence of the Kuiper belt?
A. The existence of short period comets
B. The fact that many comets orbit on the ecliptic
C. The fact that comets are icy objects
D. Objects of the Kuiper belt were detected by the Hubble Space Telescope
20. What is the evidence for the existence of the Oort cloud?
A. Objects of the Oort cloud were detected by the Hubble Space Telescope
B. The fact that new comets continue to appear indicates that a distant reservoir of
icy bodies must exist
C. The fact that many comets orbit on the ecliptic
D. The fact that some comets have retrograde orbits
21. The Leonid meteor shower occurs in mid November. Which of the following
statements regarding the Leonids is true?
A. The radiant of the meteor shower is in the constellation of Leo
B. The shower occurs when the Earth crosses the path of an old comet
C. The particles of the shower originate from the breakup of comet Leon R.
D. Only B and C are true
E. Only A and B are true.