Question

What is an Earthquake ?

Answer 1

Answer:

An earthquake is the result of a sudden release of stored energy in the Earth's crust that creates seismic waves. Earthquakes may occur naturally or as a result of human activities. Smaller earthquakes can also be caused by volcanic activity, landslides, mine blasts, and nuclear experiments.

Answer 2

Explanation:

Question

What is earthquake?

Answer

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.

The magnitude of an earthquake is conventionally reported using the Richter scale or a related Moment scale (with magnitude 3 or lower earthquakes being hard to notice and magnitude 7 causing serious damage over large areas).