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What is an earthquake ?
Verified Answer
What is an earthquake ?
Movements within the Earth’s crust cause stress to build up at points of weakness and rocks to deform.
Stored energy builds up in the same way as energy builds up in the spring of a watch when it is wound.

When the stress finally exceeds the strength of the rock, the rock fractures along a fault, often at a zone of existing weakness within the rock. The stored energy that is suddenly released as an earthquake!

Intense vibrations, or seismic waves, spread out from the initial point of rupture, the focus, like ripples on a pond. These waves are what makes the ground shake and can travel large distances in all directions.

Near the focus, the waves can be very large, making them extremely destructive.
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Most Upvoted Answer
What is an earthquake ?
Due to the movement of lithosphere plates vibration are caused on the surface of the earth these vibration ( or termor) are called and earthquake
Community Answer
What is an earthquake ?
It's a sudden shaking of Earth due to Natural or Man made hazards/actions ..
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What is an earthquake ?
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