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23 Cards in this Set
- Front
- Back
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Axis
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an imaginary straight line running through the from the North Pole to the South Pole
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Seismic Activity
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vibrations that travel through the earth
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Crust
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thin, outermost zone of the earth
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Mantle
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a zone of rock
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Core
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the center of the earth made mostly of iron
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Moho
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the change in speed of the waves marks the boundary between the crust and the mantle
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Shadow Zones
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locations on the earth's surface where neither S waves nor P waves are detected or where only P waves are detected
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Magnetosphere
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region of space affected by the earth's magnetic field
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Law of Gravitation
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the force of attraction between any two objects depends upon their masses and the distance between them.
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Equator
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an imaginary line that divides the earth into the Northern and Southern hemisphere.
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Oblate Spheroid
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a slightly flattened sphere
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Hydrosphere
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All the earth's water
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Atmosphere
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blanket of gasses surronding the earth
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Mass
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the amount of matter in a subject
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Oceanic Crust
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crust beneath the ocean
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Continental Crust
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crust under the continents
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Lithosphere
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solid portion of the mantle
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Asthenosphere
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under the lithosphere, has ability to flow
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Plasticity
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the ability to flow
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Weight
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measure of the strength of the pull of gravity on an object
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P Waves
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primary waves
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S Waves
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secondary waves
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Newtons
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measures weight
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