Earthquake + Tsunami Study Guide | Baamboozle - Baamboozle

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earthquakes and tsunamis

Study Slideshow

What is the earth's crust broken up into?

tectonic plates

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What do earthquake dangers include?

tsunamis/flood, damaged houses, fire, loss of life, landslides/avalanches

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What can an earthquake that occurs at the bottom of the ocean floor cause?

tsunami

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What is the name of the instrument that measures earthquake intensity?

seismograph

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What is stress?

A force that acts on rock to change it's shape

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What is compressional force?

stress that squeezes a rock until it folds or breaks

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What is tensional force?

stress that stretches a rock so it becomes thinner in the middle

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What type of fault does a shearing cause?

strike-slip

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What type of fault does compressional stress cause?

reverse fault

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What type of fault does a tensional stress cause?

normal fault or shear stress

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Define epicenter

point on the surface of the Earth above an earthquake

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Define focus:

the point where the rocks break

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What are the 4 possible causes of a tsunami?

earthquake, volcanic eruptions, landslides, meteorites

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What plate boundaries do tsunamis occur at?

convergent

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What year did the Sumatra earthquake occur?

2004

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What was the intensity of the Sumatra earthquake?

9.3

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