Are ther earthquakes on other planets?
We have been asked this question before, thus the following answer comes from our own iGS archives:
According to the following link Earth is the only planet that exhibits major surface movements (plate tectonics).
However some research in recent years suggests that Mars may have at one point exhibited plate tectonics.
The following link has an article that supports the theory that only Earth exhibits plate tectonics. However, the author does suggest that moons of other planets such as Jupiter and Saturn may have tectonic features.