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Ch.3

QuestionAnswer
Erosion The process by which water, ice, wind, or gravity moves weathered particles of rock and soil.
Sediment Small, solid pieces of materials that comes from rocks or the remains of organisms; earth materials deposited by erosion.
Deposition Process in which sediment is laid down in new locations.
Gravity The attractive force between objects; the force that moves objects downhill.
Mass Movement Any one of several processes by which gravity moves sediment downhill.
Runoff Water that flows over the ground surface rather than soaking into the ground.
Rill A tiny groove in soil made by flowering.
Gully A large channel in soil that carries runoff after a rainstorm.
Stream A channel through which water is continually flowing downhill.
Tributary A stream or river that flows into a larger river.
Flood Plain The flat, wide area of land along a river.
Meander A loop like bend in the course of a river.
Oxbow Lake A meander cut off from a river.
Delta A landform made of sediment that is deposited where a river flows into a lake or ocean.
Alluvial Fan A wide, sloping deposit of sediment formed where a stream leaves a mountain range.
Groundwater Water that fills the cracks and spaces in underground soil and rock layers.
Stalactite An icicle like structure that hangs from the ceiling of a cavern.
Stalagmite A column like forms that grow upward from the floor of a cavern.
Karst Topography A region in which a layer of limestone close to the surface creates deep valleys, caverns, and sinkholes.
Glacier Any large mass of ice that moves slowly over land.
Continental Glacier A glacier that covers much of a continent or large island.
Ice Age Time in earth's history during which glaciers covered large parts of the surface.
Valley Glacier A long, narrow glacier that forms when snow and ice build up in a mountain valley.
Plucking The process by which a glacier picks up rocks as it flows over the land.
Till The sediments deposited directly by a glacier.
Moraine A ridge formed by the till deposited at the edge of a glacier.
Kettle A small depression that forms when a chunk of ice is left in glacier till.
Headland A part of the shore that sticks out to the ocean.
Beach Wave-washed sediment along a coast.
Longshore Drift The movement of water and sediment down a beach caused by waves coming in to shore at an angle.
Spit A beach formed by longshore drift that projects like a finger out into the water.
Deflation The process by which wind removes surface materials.
Sand Dune A deposit of wind-blown sand.
Loesses A wind-formed deposit made of fine particles of clay and silt.
Created by: lad201177713