Would you expect to find more impact craters on Io or Callisto? Why?
Question
Would you expect to find more impact craters on Io or Callisto? Why?
Solution
You would expect to find more impact craters on Callisto than on Io. This is because Io, one of Jupiter's largest moons, is the most volcanically active body in our solar system. Its surface is constantly being resurfaced by lava from its many volcanoes, which would cover up any impact craters.
On the other hand, Callisto, another of Jupiter's large moons, is not volcanically active. Its surface is old and heavily cratered from billions of years of impacts. Therefore, you would expect to find more impact craters on Callisto than on Io.
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