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P-waves or primary waves are the fastest and first to reach the seismometer, can travel through anything- S-waves or secondary waves are the second to reach the seismometer and they move up and down, can only move through solids.

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sound and light also travel in waves

the boxing day tsunami was created by the biggest  recorded earthquake ever

tsunamis travel 500 miles an hour

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June 2006 Indian ocean has a warning system- DART was created, detects changes in water pressure and seismic activity and detects where the tsunami will strike

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Ocean waves travel at the interface between the sea surface and the atmosphere and seismic waves also have an interface. They have all the features that all waves have.

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tsunami- Enormous wave generated by vertical movement of the ocean floor during an underwater earthquake; tsunamis can also be caused by volcanic eruptions, landslides, or meteorite impacts. A deadly set of waves can rise high on a beach and travel far inland

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March 2011- caused by the Tohoku earthquake which was a magnitude of 9.0, generated a tsunami- came in Sendai, Japan- damaged nuclear power plants, 11 reactors were shut down, Power and backup power were lost at the Fukushima plant, released radioactive materials- clean up will last for years

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tectonic plates

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Amplitude- Height of a wave; this can be measured from a center line to the top of the crest, or to the bottom of the trough

Body wave- Type of seismic wave that travels through the body of a planet; body waves include primary waves and secondary waves

Crest- highest point of a wave

Love wave- Surface wave that has a side-to-side motion, much like a slithering snake

Primary wave- (P-wave) Fastest type of body wave, capable of traveling through solids, liquids, and gases

Rayleigh wave- Surface wave that has a rolling motion

Secondary wave- (S-wave) Slower moving, transverse body wave that can only travel through solids

Surface wave- Seismic wave that travels around the ground surface; the two types are Love and Rayleigh

waves

Trough- Lowest point of a wave

wave length-Horizontal distance between two waves, as measured from crest to crest or trough to trough

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There are lots of types of seismic wave. There are body waves including P wave and S waves. There are surface waves which include love waves and rayleigh waves. Waves have crests and troughs and wavelengths. Different waves travel at different speeds.

Sometimes they cause earthquakes. Underwater earthquakes can cause tsunamis. Any sharp jolt in the ocean can cause a tsunami. A tsunami can travel 500 miles an hour. Boxing Day and a Japan tsunami caused a lot of destruction. Warning systems were created such as DART that can predict tsunamis.