Question

what is the main cause of the occurrence of an earthquake ?​

Answer 1

Explanation:

An earthquake is caused by a sudden slip on a fault. The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. ... The primary boundary between these two plates is the San Andreas Fault.

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Answer 2

Answer:

An earthquake is caused by a sudden slip on a fault. ... When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate