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13 Cards in this Set
- Front
- Back
geologist use these 2 types of evidence to learn about Earth's interior
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direct evidence from rock samples and indirect evidence from seismic waves
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seismic waves
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vibrations that travel through Earth carrying the energy released during an earthquake
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pressure
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the result of a force pressing on an area
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the 3 main layers of Earth
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crust, mantle, core
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crust
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a layer of solid rock that includes both dry land and the ocean floor
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basalt
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a dark rock the makes up most of oceanic crust
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granite
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a light colored rock that makes up most of continental crust
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mantle
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the layer of hot solid rock, the thickest layer below the crust and above the core
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lithosphere
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a rigid layer made up of the uppermost part of the mantle and the crust
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asthenosphere
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the soft layer of the mantle on which the lithosphere floats
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outer core
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a layer of molten or liquid iron and nickel that surrounds the inner core of Earth
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inner core
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a dense ball of solid iron and nickel at the center of Earth
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Earth's magnetic field
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created by movements in the liquid outer core
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