Question

what are earthquakes?

Answer 1

Explanation:

An earthquake is the result of a sudden release of stored energy in the Earth's crust that creates seismic waves. Earthquakes are accordingly measured with a seismometer, commonly known as a seismograph. ... At the Earth's surface, earthquakes may manifest themselves by a shaking or displacement of the ground.

Answer 2

Answer:

An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.

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