Earth Science Test 3 Vocab

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Vocabulary

Last updated 3:21 AM on 1/18/23
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23 Terms

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exosphere
separates earth from the rest of the atmosphere and space.
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thermosphere
where radiation gets stopped. extremely hot, low density so it can’t hurt.
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mesosphere
protects earth from solid objects. hits and curve.
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stratosphere
contains ozone layer that protects us from the suns UV radiation. major wind currrents. little weather.
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troposphere
lowest layer of atmosphere. where weather happens. where we live.
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crust
the outermost layer, made of weathered material.
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asthenosphere
the lower layer of the earth's mantle, layer of plasticized solid. weak.
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lithosphere
the upper layer of earths mantle, stone. stronger. tectonic plate.
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outer core
outer part in the earths surface. composed of metal- mostly liquid iron and nickel.
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inner core
dense hot ball in the center of the earth. extremely hot.
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magnetosphere
magnetic force field powered by rotating iron core.
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Van Allen belts
layer of plasma.
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aurora borealis
plasma gets curved around Earth then falls and makes light.
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chlorofluorocarbons
chemical causing ozone layer hole. cause thinning of ozone layer.
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seismic waves
echo that shows how many layers are in the earth. how many echos=how many layers.
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convection
motion in a gas or liquid where the warmth rises and goes out.
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continental drift
hypothesis that all continents were once joined together.
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converging boundary
lithosphere plates (boarder) where places meet or collide.
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diverging boundary
where the plates separate and land moves away. in water.
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transform boundary
2 plates moving past each other.
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subduction
ocean floor sinks under another piece of crust.
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mid-ocean ridge
when both lands push together going up, molten material fills the space under.
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magnetosphere
shields our Earth from harmful solar radiation

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