Answers are in blue.

1. The Kirkwood gaps are caused by ...

a. collisions with planets.
b. tidal interactions with large asteroids.
c. high rotation velocities.
d. orbital resonances with Jupiter.
e. None of the above.

2. Compared to the major planets, asteroids in the Asteroid Belt have orbits with ...

a. similar properties.
b. higher inclinations, but similar eccentricities.
c. similar inclinations, but higher eccentricities.
d. higher inclinations and eccentricities.
e. lower inclinations and eccentricities.

3. Which of the following is the favored description of what asteroids are?

a. Burned out cometary cores.
b. Pieces of one planet which formed between Mars and Jupiter but then broke up.
c. Planetesimals that never formed into a planet.
d. Moons ejected from orbits around other planets.
e. None of the above.

4. Ceres is ...

a. an asteroid.
b. the largest object between Mars and Jupiter.
c. a dwarf planet.
d. probably differentiated.
e. All of the above.

5. Which of the following populations of asteroids does not exist?

a. Asteroids that cross the orbit of Mars.
b. Asteroids that cross the orbit of Earth.
c. Trojan asteroids in Jupiter's orbit.
d. Asteroids captured as moons by other planets.
e. All of the above exist.

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Last modified 26 November, 2006. © Gregory C. Sloan.