What are the causes of earthquake?
Answers
Answer:
the earth is divided into plates called the tectonic plates. There are 7 plates.
these plates due to the magma's constant movement in the earth's mantle, also start moving when this happens the earth's crust starts to move also.
the intensity of an earthquake is measured using a seismometer.
Explanation:
Answer:
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Explanation:
The causes of earthquake...
Earthquakes are caused by tectonic movements in the Earth's crust. The main cause is when tectonic plates ride one over the other, causing orogeny (mountain building), and severe earthquakes.
The boundaries between moving plates form the largest fault surfaces on Earth. When they stick, motion between the plates leads to increasing stress. This continues until the stress rises and breaks, suddenly allowing sliding over the locked portion of the fault. This releases the stored energy as shock waves. The San Andreas fault in San Francisco, and Rift valley fault in Africa are faults like this:-
1. Volcanic Earthquakes : Earthquakes which are caused by volcanic eruptions are quite devastating. However, these are confined to areas of active volcanoes.
2. Collapse Earthquakes : In areas of intense mining activity, often the roofs of underground mines collapse and minor tremors take place. These are called collapse earthquakes.
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