23 terms

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
Mechanical Weathering
This type of weathering is caused by ice, water, wind, gravity, animals, and plants
Warm & Wet
What type of weather would cause rapid chemical weathering?
Floodplain
What is an area next to a river that forms from repeated deposition called?
Mass movement
describes a lot of rocks, soil, or snow moving downhill.
Gravity
the force behind most agents of erosion
Slump
A mass movement in which a block of land tilts and moves downhill along a surface that curves into the slope
Glacial Plucking
loosened rock that gets attached to the bottom or a glacier
contour intervals
difference in elevation between two contour lines that are side by side on a contour map.
depression
a closed loop contour line with hashre lines (dashes) inside
landform
a feature that makes up the Earth's surface (examples: plain, valley, mountain)
Moraine
A ridge formed by the till deposited at the edge of a glacier.
Till
An accumulation of glacial sediment, deposited directly by glacier ice.
Abrasion
Weathering process of scraping or rubbing surfaces due to friction.
Calving
Large chunks of ice break off a glacier and make large icebergs

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