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Do any moons have plate tectonics?

Answer 1

Europa shows signs of plate tectonics

While dealing with ice instead of rock in the case of Europa, the features observed in its icy surface appear to suggest the interaction of a more fluid underlying ice layer with a colder, harder shell of ice, a process that is analogous to our own lithosphere and asthenosphere.

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Answer 2

Matthew Arnold

No, moons do not experience plate tectonics in the same way that Earth does. But some moons do, like Europa on Jupiter and Enceladus on Saturn, have icy surfaces that show signs of tectonic activity brought on by internal heating and gravity.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.