Question

State any two causes of Earthquakes.​

Answer 1

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.

Groundwater extraction – decrease in pore pressure.

1. Groundwater – increase in pore pressure.
2. Heavy rain.
3. Pore fluid flow.
4. High CO2 pressure.
5. Building dams.
6. Earthquakes.
7. No earthquakes (Seismic quiescence)

Answer 2

Answer:

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Explanation:

1. Crashing of Tectonic plates

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don't just slide smoothly; the rocks catch on each other.