Set: science 6th grade earthquakes FRA
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All 12 Terms
| | Term | Definition |
|---|---|---|
| |
earthquake | a shaking of the ground caused by the sudden movement of part of the earth's crust |
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fault | a break or crack in the earth's surace where rocks move |
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focus | the underground point of origin of an earthquake where the rocks break and move (depth) |
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epicenter | the point on the earth's surface directly above the focus of an earhtquake (the distance away) |
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magnitude | the amt. of energy released by the quake (the strength of it) |
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seismic waves | waves of energy that are released during an earthquake |
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seismograph | an instrument that detects and measures seismic waves of an earthquake |
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Richter scale | the scale used to measure the strength or magnitude of an earthquake (uses numbers from 1-10) |
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aftershocks | samller quakes produced after a major quake caused by rock shifting to new positons |
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San Andreas fault | a hige crack that runs through most of California that separates the North American and Pacific plates |
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effects of earthquakes | 1) avalanches(landslides) 2)shaking 3)recue work to remove trapped victims 4) fires 5)tsunamis |
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4 factors that can affect how much damage an earthquake doses | 1) population of the area 2) the time it occurs 3) the kind of rock & soil in the area 4) the kind of buildings in the area(are they earthquake resistant?) |
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science 6th grade earthquakes FRA
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