Probing planet Earth
Lesson 7 / 13
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I can describe S waves and P waves produced by earthquakes and how they move through different parts of the Earth.
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Earthquakes usually occur near to the edges of tectonic plates
P waves and S waves are produced deep underground where tectonic plates slip and cause vibrations in rock
P waves are longitudinal waves and travel through liquid
S waves are transverse waves and cannot travel through liquid layers inside Earth
P waves and S waves provide evidence for the internal structure of Earth
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