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7th science 9
Erosion and Deposition
| definition | term |
|---|---|
| is the process by which natural forces move weathered rock and soil from one place to another. | Erosion |
| The material moved by erosion | sediment |
| occurs where the agents of erosion, deposit, or lay down, sediment. | deposition |
| act together in a cycle that wears down and builds up Earth’s surface. | Weathering, erosion, and deposition |
| the force that moves rock and other materials downhill. | gravity |
| gravity causes ____ ________ | mass movement |
| The different types of mass movement | landslides, mudflows, slump, and creep. |
| water that moves over Earth’s surface. | runoff |
| the major agent of the erosion that has shaped Earth’s land surface. | Moving water |
| tiny grooves in the soil | rills |
| a large groove, or channel, in the soil that carries runoff after a rainstorm. | gully |
| a channel along which water is continually flowing down a slope. | stream |
| a stream or river that flows into a larger river. | tributary |
| The flat, wide area of land along a river is a _____ _____. | flood plain. |
| a looplike bend in the course of a river. | meander |
| a meander that has been cut off from the river. | oxbow |
| creates landforms such as alluvial fans and deltas. It can also add soil to a river’s flood plain. | deposition |
| a wide, sloping deposit of sediment formed where a stream leaves a mountain range. | alluvial fan |
| sediment deposited where a river flows into an ocean or lake builds up a landform called a _____. | delta |
| the term geologists use for this underground water. | Groundwater |
| A deposit that hangs like an icicle from the roof of a cave is known as a __________. | stalactite |
| Slow dripping builds up a cone-shaped __________ from the cave floor. | stalagmite |
| A region in which a layer of limestone close to the surface creates deep valleys, caverns and sinkholes. | karst topography |
| is the ability to do work or cause change. | energy |
| is energy that is stored and waiting to be used later. | Potential energy |
| is the energy an object has due to its motion. | Kinetic energy |
| the wearing away of rock by a grinding action. | Abrasion |
| The amount of sediment that a river carries | load |
| is the force that opposes the motion of one surface as it moves across another surface | Friction |
| water moves every which way in a type of movement | turbulence |
| any large mass of ice that moves slowly over land. | glacier |
| a glacier that covers much of a continent or large island | continental glacier |
| continental glaciers have covered larger parts of Earth’s surface. | ice ages |
| a long, narrow glacier that forms when snow and ice build up high in a mountain valley. | valley glacier |
| where a glacier picks up rocks | plucking |
| The till deposited at the edges of a glacier forms a ridge | moraine |
| a small depression that forms when a chunk of ice is left in glacial till. | kettle |
| a part of the shore that sticks out into the ocean. | headland |
| beach sediment moves down the beach with the current | longshore drift |
| a beach that projects like a finger out into the water. | spit |
| a deposit of wind-blown sand. | sand dune |
| the process by which wind removes surface materials | deflation |
| wind-deposited sediment | loess |
Created by:
Jenstack
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