This is a diagram of the nine different kinds of ice.
Click on image for full size
Image from: Bridgeman, 
There are Nine Different Kinds of Ice
of ice means the form of ice which takes shape. There are nine different kinds of shapes the ice crystal can assume. It all depends upon what temperature the ice feels, and what pressure the ice is under. The diagram tells under what environment to expect to find these different kinds of ice.
A basic ice cube from your refrigerator is known as Ice I, which is the form of ice which exists at the temperatures and pressures in the bottom left corner of this diagram. If the temperature get high enough, that form of ice melts, just as an ice cube would on your kitchen table, and forms water.
As a moon evolves, it may cool down from a period of being warm. The question is whether it is presently warm enough inside a moon for ice to be in motion, to form layers of water, or for evidence of interior activity to be produced visibly on the surface.
Shop Windows to the Universe Science Store!
Our online store
on science education, classroom activities in The Earth Scientist
specimens, and educational games
You might also be interested in:
If the satellite has means of warming itself, then the interior may go through many startling changes as the moon evolves. The moon may have water inside, and water may exist close enough to the surface...more
Amalthea was discovered by E Barnard in 1872. Of the 17 moons it is the 3rd closest to Jupiter. Amalthea is about the size of a county or small state. Amalthea is named after the goat in Greek mythology...more
Callisto was first discovered by Galileo in 1610. It is the 2nd largest moon in the solar system, and is larger than the Earth's moon. It is about as big as the distance across the United States. Callisto...more
Measurements by the Galileo spacecraft have been shown that Callisto is the same inside from the center to the surface. This means that Callisto does not have a core at the center. This means that, unlike...more
Many different types of surface are shown in this picture. In the front is a huge crater, which goes for a long way over the surface. This crater could be compared to that of Mimas. They both show that...more
The surface of Callisto is deeply marked with craters. Craters are the little white marks in the picture. It looks like it might be the most heavily cratered body in the whole solar system. And some of...more
Europa was first discovered by Galileo in 1610, making it one of the Galilean Satellites. It is Jupiter's 4th largest moon, 670,900 km ( miles) from Jupiter. Europa's diameter is about half the distance...more