Seismic waves Section 4.

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Presentation transcript:

Seismic waves Section 4

Vocabulary Seismic wave P wave S wave Surface wave Tsunami Seismograph

Seismic wave A wave produced by an earthquake.

P wave A longitudinal seismic wave. s wave A tranvsverse seismic wave.

Surface wave A combination of a longitudinal wave and a transverse wave that travels along the surface of a medium.

tsunami A huge surface wave on the ocean caused by an underwater earthquake.

seismograph An instrument used to detect and measure earthquake waves.

Video http://www.youtube.com/watch?v=x1tb6HwyaHg