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| A broad, circular fan-shaped deposit of sediments found in deserts where erosional stream channels meet the valley floor and spread out, depositing the stream load. |
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| An underground reservior of water which can be extracted for surface use. |
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| A chain of islands or set of islands grouped together |
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| A circular coral reef that encloses a shallow lagoon |
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| Any wide indentation of the land. Larger than a cove but smaller than a gulf |
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| A small water body that flows with gravity; typically smaller than a creek. |
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| A narrow strait of water between two land masses that connects two larger water bodies |
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| The major land masses of the earth. |
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| A small indentations of land by a lake, sea, or ocean. Smaller than a bay |
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| A body of water that flows with gravity; larger than a brook but smaller than a river. |
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| The often triangular-shaped alluvial deposition area at the mouth of a river. |
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| The wide end of a river when it meets the sea; salty tidal water mixes with the fresh water of the river here |
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| A coastal valley which was sculpted by glacial action |
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| A large mass of ice that moves over the land, carving and eroding surfaces as it moves |
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| A large inlet of water surrounded by land; usually surrounded on three sides by land. Larger than a bay. |
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| A indentation of water into land; usually of a small size |
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| A body of land surrounded on all sides by water |
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| A narrow strip of land that is bordered on two sides by water and connects two larger land masses |
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| A landscape composed of limestone features including sinkholes, caves, and underground streams |
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| A small, shallow body of water between a barrier island or a coral reef and the mainland, also a small body of water surrounded by an atoll |
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| Any accumulation of water surrounded by land, often of a considerable size. Larger than a pond but smaller than an inland sea |
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| A large flat-topped but steep-sided landform; they shrink to become buttes. Spanish for table |
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| A prominent and large mass of land that extends above the surrounding topography. Larger than a hill |
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| The largest bodies of water on the planet |
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| An area that lies in the foothills of a mountain range. |
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| A small lake, surrounded by land. Most often found in a natural depression |
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| An artificial lake of water held behind a dam to store water for irrigation, drinking, recreation, power, or other use |
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| A river is a large stream that flows over land. It is often a perennial (year-round) water body and usually flows in a specific channel, with a considerable volume of water |
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| Either a very large lake that contains salt water or a portion of an ocean (can be surrounded by water or surrounded by land). |
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| A generic term for any body of flowing water |
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| a stream of water that flows into another body of water. |
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| Land which is often saturated with water, such as a marsh or swamp. |
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| A location in the long profile of a stream where water flows vertically. |
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| A linear depression in the landscape that slopes down to a stream, lake or the ocean. |
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| An elevated area of land created from the release of lava and ejection of ash and rock fragments from and volcanic vent. |
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| Steep bank found on the inside of stream meanders |
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| Point on the long profile of a stream where the gradient is broken by a sudden drop in elevation |
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| Low hill of sand that forms along coastal beaches |
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| A habitat that consists of waterlogged spongy ground. |
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| a table-shaped area of rock found in arid and semi-arid areas formed when more resistant rock is reduced at a slower rate than softer rocks around it under the effects of wind erosion. |
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| a ridge of rock in an arid area which is aligned to the prevailing wind direction. |
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| steep-sided valley or ravine in desert and semi-arid areas. |
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| at the coast, land jutting out-further into the sea and separating bays |
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| the uppermost portion of a river course close to the source. |
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| the point where two streams of flowing water merge. also a confluence |
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