Posted: March 28th, 2023
CCS Physical Geography definitions #1-10
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A volcano that is erupting. Also, a volcano that is not presently erupting, but that has erupted within historical time and is considered likely to do so in the future.
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Active Volcano
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A group or chain of islands clustered together in a sea or ocean.
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Archipelago
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Fine particles of pulverized rock blown from an explosion vent. Measuring less than 1/10 inch in diameter, ash may be either solid or molten when first erupted.
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Ash
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The shell within the earth, some tens of kilometers below the surface and of undefined thickness, which is a shell of weakness where movements take place to permit pressure adjustments.
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Asthenosphere
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A body of rock that contains significant quantities of water that can be tapped by wells or springs.
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Aquifer
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The layer of air that surrounds the Earth.
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Atmosphere
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A ring (or partial ring) of coral that forms an island in an ocean or sea.
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Atoll
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A large mass of material or mixture of material falling or sliding rapidly under the force of gravity._____________ often are classified by their content, such as snow, ice, soil, or rock avalanches. A mixture of these materials is a debris avalanche.
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Avalanche
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A body of water that is partly enclosed by land (and is usually smaller than a gulf.)
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Bay
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The life layer at and near the surface of the Earth, including both plants and animals.
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Biosphere
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