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24 Cards in this Set
- Front
- Back
Equator
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is an imaginary line that divides earth into the Northern and Southern Hemispheres.
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Oblate Spheroid
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a slightly flattened sphere.
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Axis
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is an imaginary straight line running through the earth from the North Pole to the South Pole.
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Hydrosphere
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All lakes, rivers, oceans, ect. that make up the earth's hydrosphere.
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Atmosphere
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is a blanket of gases surrounding earth.
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Seismic waves
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are vibrations that travel through the earth.
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Crust
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The thin, solid outermost zone of the earth.
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Mass
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is the amount of matter in an object.
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Oceanic Crust
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beneath the oceans the crust is called the oceanic crust.
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Continental Crust
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The part of the crust on which the continents rest on.
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Mantle
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Below the crust the mantle is located.
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Lithosphere
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The solid portion of the mantle and the crust above it makes the lithosphere.
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Asthenosphere
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is located just below the lithosphere.
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Plasticity
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The ability of a solid to flow is called plasticity.
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Core
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is located below the mantle.
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P waves
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P waves are primary waves.
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S waves
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S waves are secondary waves.
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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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Moho
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their change in the speed of the waves marks the boundary between the crust and the mantle.
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Magnetosphere
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this area is affected by the earth's magnetic field.
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Gravity
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the forces of attraction that exists between all matter in the universe.
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Law of Gravitation
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this law states that the force of attraction between any two objects depends upon their masses and the distance between them.
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Weight
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is a measure of the strength of the pull of gravity on a object.
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Newtons
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weight is measured in newtons.
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