Earthquakes that sometimes come before a main earthquake are called __________.

Question

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Foreshocks are smaller earthquakes that sometimes precede a main earthquake. They occur as the result of the movement of the Earth's crust along a fault line before the main shock. Seismic waves are vibrations caused by earthquakes that propagate through the Earth's crust. Aftershocks are smaller earthquakes that occur after a main earthquake. Seismic belts are regions of the Earth's crust where earthquakes are particularly common.

Earthquakes That Sometimes Come Before a Main Earthquake Are Called