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25 Cards in this Set
- Front
- Back
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What is the definition for the word seismic waves?
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They are vibrations that travel through the earth.
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What is the definition for the crust?
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The thin, solid outermost zone of the earth is the outer covering or (crust).
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What is the definition for the mantle?
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A zone of rock nearly 2,870 km thick. It makes up 2/3s of the earth's mass.
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What is the definition for the core?
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It forms the center of the earth and is mostly made from iron.
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What is the definition for Moho?
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The boundary between the crust and the mantle.
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What is the definition for shadow zones?
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They are locations on the earth's surface where neither S waves or P waves are detected or where only P waves are detected.
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What is the magnetosphere?
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The region of space, which is affected by the earth's magnetic field.
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What is gravity?
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The force of attraction that exists between all matter in the universe.
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What is the 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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What is the axis?
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Its an imaginary straight line running through the earth from the North Pole to the South Pole.
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What is the equator?
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Its an imaginary line that divides the earth into the Northern And Southern Hemispheres.
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What is an Oblate Sphere?
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Its a slightly flattened sphere.
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What is the hydrosphere?
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All Earths water.
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What is the Atmosphere?
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A blanket of Gas that surrounds the earth.
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What is mass?
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The amount of matter in an object.
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What is the oceanic crust?
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Beneath the ocean, the crust is the oceanic crust.
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What is the continental crust?
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The part of the crust of which the continents rest on.
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What is the lithosphere?
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The solid portion of the mantle and the crust.
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What is the asthenosphere?
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The part of the mantle under the lithosphere.
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What is plasticity?
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The ability for a solid to flow.
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What are P Waves?
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They are Primary waves.
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What are S waves?
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They are secondary waves.
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What is the Mohirovicic discontinuity?
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The same thing as the Moho.
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What is weight?
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The measure of the strength of the pull of gravity on an object.
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What are newtons?
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They are what weight is measured in.
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