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22 Cards in this Set
- Front
- Back
Equator
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an imaginary line that divides the earth into the Northern and Southern Hemispheres.
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Oblate Spheroid
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a sightly flattened sphere.
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Hydrosphere
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all the earth's water. 71% f the earth is water, 97% is salty, and 3% is fresh.
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Atmosphere
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the blanket of gases surrounding the earth.
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Mass
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the amount of matter in an object.
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Lithosphere
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the solid porton of the mantle and the crust above it.
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Asthenoshpere
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a region of the mante just below th lithosphere.
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Plasticity
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the ability of a solid to flow.
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P Waves
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primary waves
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S Waves
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seondary waves
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Weight
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a measure of the strength of the pull of gravity on an object. it is measured in newtons.
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Axis
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imaginary straight line running the earth from pole to pole.
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Seismic Waves
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vibrations that travel through the earth.
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Mantle
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zone of rock below the earth's crust
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Moho
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the Mohorovicic discntinuit, boundary between the earth's crust and mantle.
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Shadow Zones
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location on the earth's surface where no seismic waves or only P waves can be detected
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Magnetosphere
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a region of space that is affected by the earth's magnetic field.
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Gravity
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force of attraction between all matter in the universe.
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Law of Gravitation
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principle that the force of attraction between two objects depends on the masses and the distance bewteen the objects.
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Newtons
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the measure used for weight
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Oceanic Crust
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crust beneath the oceans.
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Continental Crust
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the part of the crust on which the continents rest.
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