How do rapids form?

Answer:
Rapids form when there is hard rock and soft rock together. The water goes over the hard rock and then cuts through the soft rock. This makes a bump where the hard rock is and when the water goes over it the water is going to go up with the bump. These can make pot holes sometimes.
First answer by ID3264878115. Last edit by Dylan12345678911. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].