1. What is the Oort Cloud?

a. The area just beyond Neptune where many icy bodies orbit the Sun.
b. The group of cometary bodies with orbits between Jupiter and Neptune.
c. The dark cloud that collapsed to form the Solar System.
d. The repository of comets with semi-major axes of tens of thousands of AU.
e. None of the above

2. Objects in the Kuiper Belt have orbits most similar to ...

a. long-period comets.
b. objects in the Asteroid Belt.
c. the major planets.
d. the Galilean Satellites.
e. None of the above.

3. Pluto has been demoted, but it is still the largest ...

a. known object in the Asteroid Belt.
b. Trojan moon of Neptune.
c. known object in the Kuiper Belt.
d. known object in the Oort Cloud.
e. Centaur.

4. What are Centaurs?

a. Objects co-orbiting with a jovian planet, either 60 degrees ahead or behind.
b. Objects scattered from the Kuiper Belt inward to orbits between Jupiter and Neptune.
c. Objects that orbit outside of the Kuiper Belt.
d. Captured moons of the jovian worlds.
e. Asteroids with orbits that cross Jupiter's.

5. Which of the following is the name of the moon of Saturn that looks most like the Death Star?

a. Mimas.
b. Miranda.
c. Oberon.
d. Enceladus.
e. Nereid.

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Last modified 5 December, 2006. © Gregory C. Sloan.