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Earth's Surface:Science Vocabulary Chapter 3 Lessons 1-5 Mass Movement

Erosion The process by which natural forces move weathered rock and soil from one place to another.
Sediment The process of erosion moves material.
Deposition Occurs where the agents of erosion deposit, or lay down, sediment.
Gravity The force that pulls you and your bike downward.
Mass Movement Any one of several processes that move sediment downhill.
Runoff As water moves over the land, it carries particles with it. (moving water)
Rills Tiny forms in soil.
Gully A 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.
Flood Pain The flat, wide area of land along a river.
Meander A looplike bend in the course of a river
Oxbow Lake A meander that has been cut off from the river.
Delta A river flows into an ocean or lake builds up a landform.
Alluvial Fan A wide, sloping deposit of sediment formed where a stream leaves a mountain range.
Groundwater The term that geologists use for underground water.
Stalactite A deposit that hangs like an icicle from the roof of a cave.
Stalagmite Slow drippings build up a cone-shaped _________ from the cave floor.
Karst Topography A type of landscape named after a region in Eastern Europe.
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 Ages Times in the past that include continental glaciers covering large parts of Earth's surface.
Valley Glacier A long, narrow glacier that forms when snow and ice build up high in a mountain valley.
Plucking A process where glaciers flow over land and pick up rocks.
Till A mixture of sediments that a glacier deposits directly on the surface.
Moraine Deposited till that forms a ridge at the edge of a glacier.
Kettle A small depression that forms when a chunk of ice is left in glacial till.
Headland A part of the shore that sticks out into the ocean.
Beach An area of wash-waved sediment along a coast.
Longshore Drift A process in which waves repeatedly hit the beach, some of the beach sediment moves down the beach with the current.
Spit A beach that projects like a finger out into the water.
Deflation The process by which wind removes surface materials.
Sand Dunes A deposit of windblown sand.
Loess Wind-deposited sediment.