Geography - Earthquakes

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10 Terms

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Earthquake

A tremor or vibration in the Earth’s crust

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Focus

The point within the Earth where an earthquake originates, located underground

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Epicentre

The point on the Earth's surface directly above the focus of an earthquake, where the tremors are felt most strongly.

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Aftershock

A smaller earthquake that occurs after a larger seismic event

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Magnitude

A measurement of the energy or size released during an earthquake

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Seismologist

A scientist who studies earthquakes

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Seismograph

An instrument that measures and records the intensity, duration, and direction of seismic waves produced by earthquakes.

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Richter Scale

Used to measure the strength of an earthquake

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Moment Magnitude Scale

Used to measure the strength the strength of an earthquake in more detail

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Tsunami

What happens when an earthquakes occur under water, displacing a huge amount of water