Version B

Write your name at the top of this quiz as well as on your answer sheet. WRITE YOUR VERSION ON YOUR ANSWER SHEET. Feel free to write or draw on the quiz.

PICK THE BEST ANSWER FOR EACH QUESTION.

1. The features called corona seen on the surface of Venus are:
a) large circular cracks on the surface.
b) very large impact basins filled with lava flows.
c) dry river beds.
d) subduction zones.
e) patches of dry ice.

a) large circular cracks on the surface.

2. Very tall extinct volcanic mountains are found on:
a) Mercury, Mars, and Io.
b) Mars and Io.
c) Mars.
d) Mars and Io.
e) Mars, Io, and Callisto.

c) Mars.

3. How long have the Spirit and Opportunity rovers been operating on Mars?
a) Since January 1976.
b) Since January 1990.
c) Since January 2004.
d) Since January 2008.
e) They have not yet arrived on Mars.

c) Since January 2004.

4. Phoebe:
a) Has geysers of water.
b) Is a moon of Mars.
c) Is orbiting around Saturn in the opposite direction from the rest of the moons.
d) Is extremely volcanic.
e) Likely has a liquid water ocean under the surface.

c) Is orbiting around Saturn in the opposite direction from the rest of the moons.

5. Winding channels on the surface of the Moon that look like dry river beds were likely formed by:
a) rivers of liquid methane.
b) rivers of water.
c) streams of lava.
d) two continental plates pulling apart, similar to the process happening along the Mid-Atlantic Ridge here on Earth.
e) no such features are seen on the Moon.

c) streams of lava.

6. The giant impact basin named Valhalla is on:
a) Mercury.
b) Venus.
c) Io.
d) Europa.
e) Callisto.

e) Callisto.

7. Why isn't Hyperion tidally locked to Saturn?

a) It is too massive.
b) It is too far away from Saturn to be locked.
c) Titan breaks the tidal lock of Saturn.
d) It is a perfect sphere, thus Saturn cannot lock onto it.
e) It is too hot.

c) Titan breaks the tidal lock of Saturn.

8. The density of craters on the surface of Ganymede is:
a) greater than Europa, but less than Callisto.
b) greater than both Europa and Callisto.
c) less than both Europa and Callisto.
d) greater than Callisto, but less than Europa.
e) about the same as Europa and Callisto.

a) greater than Europa, but less than Callisto.

9. Which of the following objects has a thick atmosphere made up of mostly nitrogen?
a) Europa.
b) Callisto.
c) Io.
d) Titan.
e) Enceladus.

d) Titan.

10. `Grooved terrain', parallel ridges of ice, is seen in close-up pictures of the lighter-colored material on:
a) Io.
b) Venus.
c) Phobos.
d) the Moon.
e) Ganymede.

e) Ganymede.

11. How does the overall composition of the Moon differ from that of the Earth?
a) same percentage iron, but different isotope ratios.
b) less iron, but same isotope ratios.
c) more iron, but same isotope ratios.
d) less iron, and different isotope ratios.
e) same percentage iron, and same isotope ratios.

b) less iron, but same isotope ratios.

12. Pancake-shaped lava domes (`pancake domes') are seen on:
a) Venus.
b) Callisto.
c) Europa.
d) Mimas.
e) Enceladus.

a) Venus.

13. What is the most geologically-active object in the solar system?
a) Earth.
b) Venus.
c) Ganymede.
d) Phoebe.
e) Io.

e) Io.

14. Rank the surfaces of the following planets in terms of the average age of the rocks, from youngest to oldest?
a) Mercury, Venus, Earth, Mars.
b) Venus, Earth, Mars, Mercury.
c) Earth, Venus, Mars, Mercury.
d) Earth, Mars, Venus, Mercury.
e) Earth, Mars, Mercury, Venus.

c) Earth, Venus, Mars, Mercury.

15. The large dark regions one can see on the face of the Moon without a telescope are called the:
a) highlands.
b) zones.
c) maria.
d) great dark spots.
e) rilles.

c) maria.

16. Jupiter's interior is:
a) mostly water ice mixed with rocks.
b) mostly liquid hydrogen and liquid metallic hydrogen, with a rocky core.
c) largely liquid water, with a rocky core.
d) mostly iron and nickel, with a rocky mantle.
e) mostly rock, with a small iron core.

b) mostly liquid hydrogen and liquid metallic hydrogen, with a rocky core.

17. Enceladus:
a) has a very cratered icy surface.
b) is sometimes called the `Death Star Moon', since it has a huge crater on one side.
c) has an atmospheric pressure at its surface greater than Earth's.
d) has active water geysers.
e) is one of the Galilean moons.

d) has active water geysers.

18. Which of the following objects has the MOST impact craters?
a) Europa.
b) Callisto.
c) Io.
d) Enceladus.
e) Earth.

b) Callisto.

19. Iapetus is a moon of:
a) Mars.
b) Jupiter.
c) Saturn.
d) Uranus.
e) Neptune.

c) Saturn.

20. The Cassini spacecraft discovered lakes of liquid methane and ethane on which moon?
a) Io.
b) Europa.
c) Ganymede.
d) Enceladus.
e) Titan.

e) Titan.