An earthquake is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves.
How earthquakes happen?
When two blocks of rock or two plates are rubbing against each other.
what types of seismic waves are there?
secondary was is pushing up.
This is a graph of earthquakes that have happened in the l00 years.
If there is a huge earthquake people are most likely to die or have been hurt.
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