Contrast the internal structures of the four Galilean moons. How ...

[shofmannx20]

Contrast the internal structures of the four Galilean moons. How are their internal differences reflected in the nature of their surfaces and other factors like their mean densities?
 
  What will be an ideal response?

Question 2

The asteroids are very young and appear to be made from the same material.
 
  Indicate whether the statement is true or false

[aidanmbrowne]

Answer to Question 1

Io: Molten to core, high density (3600 kg/m3), abundance of sulfur. Surface very active.
Europa: Water ice crust over liquid water ocean over rocky core. Lower density than Io (3000 kg/m3). Surface somewhat active, with only a few fairly new impact craters.
Ganymede, Callisto: Water ice, frozen. Low density (1900 kg/m3). Surface dead and inactive, with many craters.

Answer to Question 2

FALSE

[shofmannx20]

Excellent

[Kedrick2014]

TYSM