1. The world pictured here is ...

a. Io.
b. Europa.
c. Ganymede.
d. Callisto.
e. Titan.

2. The world pictured here is ...

a. Io.
b. Europa.
c. Ganymede.
d. Callisto.
e. Titan.

3. The world pictured here is ...

a. Io.
b. Europa.
c. Ganymede.
d. Callisto.
e. Titan.

4. The world pictured here is ...

a. Io.
b. Europa.
c. Ganymede.
d. Callisto.
e. Titan.

5. The world pictured here is ...

a. Io.
b. Europa.
c. Ganymede.
d. Callisto.
e. Titan.

6. The world pictured here is ...

a. Io.
b. Europa.
c. Ganymede.
d. Callisto.
e. Titan.

7. What causes the wispy terrain on Dione?

a. "Snowfall" from plumes on the surface.
b. Fresh material which has flowed to the surface.
c. Series of scarps catching the Sun.
d. Alien construction projects.
e. None of the above.

8. The world pictured here is ...

a. Iapetus.
b. Triton.
c. Miranda.
d. Mimas.
e. Enceladus.

9. The world pictured here is ...

a. Iapetus.
b. Triton.
c. Miranda.
d. Mimas.
e. Enceladus.

10. The world pictured here is ...

a. Iapetus.
b. Triton.
c. Miranda.
d. Mimas.
e. Enceladus.

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Last modified 13 April, 2007. © Gregory C. Sloan.