GANYMEDE

1. What are the differences between the newer surface and the older surface and what are the causes for these features?

2. How does Ganymede compare to all the other moons in the solar system in size?

3. Describe the composition of Ganymede?

4. What unique feature was first discovered on Ganymede?

1. How does tidal flexing occur? (What happens)?

2. Describe the surface of Europa.

3. Europa has an ionosphere; how does this occur?

4. Relate the impact cratering to the age of the surface of Europa.

5. What evidence indicates that there may be oceans?

6. What are the two types of terrains on Europa?

7. What spacecraft brought back the best pictures of Europa?

1. What is unique about the surface of Io?

2. What causes the volcanism on Io?

3. Why do scientists think that Io may have a magnetic field?

4. Why would a magnetic field be significant?

5. What is notable of Io’s core?

6. Describe Io's two-layer structure.

1. What surface features dominate Callisto?

2. What evidence suggests there may be a salty ocean hidden under the surface of Callisto?

3. Is the orbit of Callisto circular or elliptical? What is its eccentricity?

4. Describe the composition of Callisto.

5. Callisto is one of the most heavily cratered and oldest surfaces in the atmosphere due to lack of _______________.

6. Unlike all other Galilean satellites, Callisto is not completely _____________ due to what circumstances?

7. Largest crater in Callisto?

8. What properties does Callisto share with earth’s moon and how does this effect its orbit?