Key terms to do with earthquakes and volcanoes

cards showing the main key words on earthquaks and volcano's

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Epicentre

The point when the ground breaks in an earthquake

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Dormant

A sleeping volcano (volcano's can be dormant for up to 600 years)

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Lahar

Mudslide caused by the substances on the volcano eg rocks, clay which has been melted and runs down the volcano causing a type of mudslide

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Richter scale

Scale used to measure the magnatude of an earthquake

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Magma

molt and rock held in the magma chamber

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Aftershock

a trimer after a big earthquake

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San francisco

is on the san andreas fault line

the pacific plate moves nw by 6cm per year

north american plate moving nw by 1cm per year

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