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Earthquakes
Earthquakes only
Question | Answer |
---|---|
fault | a crack in the earth's crust |
focus | the point beneath Earth's surface where rock breaks under stress and causes and earthquake |
magnitude | measure of the energy released during an earthquake |
seismograph | a device that measures the strength of an earthquake |
epicenter | the point on Earth's surface directly above the focus of an earthquake |
p waves | primary waves, travel through the body of Earth. Travels in a straight line, second strongest wave |
s waves | seismic waves that travel through the body of the earth. These are the slower than p waves, stronger and cause more damage |
earthquake | the shaking and trembling that happens when rock under the Earth's surface moves |
surface waves | seismic waves that travel on the Earth's surface; these are the most destructive |
body waves | earthquake waves that occur inside the Earth; p waves and s waves |