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Chapter 9
| Question | Answer |
|---|---|
| Deposition | occurs where the agents of erosion deposit, or lay down sediment. |
| Gravity | the force that moves rock and other material downhill. |
| Landslides | rock and soil slide quickly downhill |
| Mudflows | rapid downhill movement of a mixture of rock, water, and soil. |
| Slump | a mass of rock and soil suddenly slips down a slope. |
| Creep | very slow downhill movement of rock and soil. |
| Runoff | water that moves over Earth’s surface |
| Rills | tiny grooves in the soil created by runoff. |
| Gully | large groove, or channel, in the soil that carries runoff after a rainstorm. |
| Stream | a channel along which water is continually flowing down a slope. |
| Tributary | a stream or river that flows into a large river. |
| Waterfalls | occur where a river meets an area of rock that is very hard and erodes away slowly. |
| Flood Plain | flat, wide area along a river which floods when the river overflows. |
| Meander | a loop-like bend in the course of a river. |
| Oxbow Lakes- | a meander that has been cut off from the river. |
| Groundwater | water that soaks into the ground, fills openings in the soils and trickles into spaces and cracks in layers of rock. |
| Stalactite | a deposit that hangs like an icicle from the roof of a cave. |
| Stalagmite | low dripping builds up a cone-shape from the floor. |
| Karst Topography | region in which a layer of limestone close to the surface creates deep valleys, caverns, and sinkholes. |
| Energy | the ability to do work or cause change. |
| Slope | the amount a river drops toward sea level over a given distance. |
| Volume of Flow- | volume of water that moves past a point on the river in a given time. |
| Turbulence | roughness that prevents water from flowing smoothly. |
| Continental Glaciers | covers much of a continent or large island. |
| Valley Glacier | long, narrow glacier that forms when snow and ice build up high in a mountain valley. |
| Plucking | as glaciers move over land, it picks up rocks |
| Till | mixture of sediment that glaciers deposit directly on the surface. |
| Moraine | idge formed by the till deposited at the edges of glaciers. |
| Terminal Moraine | ridge of till at the farthest point reached by a glacier. Long Island in New York is a terminal glacier. |
| Kettle | small depression that forms when a chunk of ice is left in glacier |
| Headland | part of the shore that sticks out into the ocean. |
| Beach | an area of wave–washed area along the coast. |
| Spits | a beach that projects like a finger out into the water. |
| Sandbar | long ridges of sand parallel to the coast. |
| Barrier | forms when storm waves pile up large amounts of sand above sea level forming a long narrow island parallel to the coast. |
| Deflation | process by which wind removes surface material. |
| Abrasion | wind-carried sand can polish rock, but cause little erosion. |
| Sand Dunes | deposit of wind blown sand. |
| Loess | Sediment that is finer than sand and wind-deposited far from its source. |