Weathering, Erosion & Deposition

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Terms in this set (...)

Weathering
a gradual wearing away or changing of rock and soil caused by water, ice, temperature changes, wind, chemicals, or living things
Chemical weathering
occurs when chemicals (like acid) react with rocks to change them into different materials.
Mechanical weathering
The breakdown of rock into smaller pieces without a change in chemical composition.
Glacier
a large, slow-moving sheet of ice that scrapes and carves away at the land surface. Glaciers can change landforms and create lakes in their path.
Delta
a pile of soil (sediment) at the end of a river.
Deposition
the laying down, or settling, of pieces of rock or soil by water, ice, and wind
Erosion
the breakdown and transport of pieces of soil or rock from a place on Earth's surface to another by machanisms including gravity, wind,water,ice, or plants and animals
Landslide
a rapid downhill movement of large amounts of rock and soil
Sediment
any earth material that has been moved from one place to another and layed down on the surface of Earth; includes materials moved by gravity, wind, water, or ice
Floodplain
What is an area next to a river that forms from repeated deposition called?
Gravity
the force behind most agents of erosion
landform
a feature that makes up the Earth's surface (examples: plain, valley, mountain)
dunes
windblown accumulations of sand

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