weathering and erosion practice test.notebook

Weathering and Erosion Practice test.notebook

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process of breaking down rock and sediment

stays there.using force, rock is broken down but DOES NOT change its composition.

Using natural acids, rocks break down AND CHANGE its composition. No longer like parent rock.

mixture of weathered , organic matter , water, & air.

Wearing away and REMOVAL of rock through gravity, wind, water, or ice.

Large sections of soil and rock move downhill

Freezing & thawing of water that has filled cracks in rocks. Ice expands and breaks rock apart.

water or sand removes a layer of rock by passing over the rock. water moving over surface downhill from heavy rain

ice and snow built up over years in large mass.

Moving water that is the MOST important agent of erosion.rock and soil quickly slide down a hill's curved surface

Soil and rock SLOWLY moving downhill due to freezing and thawing.


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Wind

WATER

ICE

ICEGRAVITY

GRAVITY

WATER

WATER GRAVITY


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Both break down of rock.Mechanical the rock stays put. Erosion takes the sediment away.

Ice WedgingPlants growing

Animals scraping soil and rock

Stream erosion causes V shaped valleys. Glacial erosion caused Ushaped valleys.

From the West to the East. The sand is building up on the west side of the dune.

The dune is moving towards the EAST.


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All these processes work together to increase weathering. Mechanical uses force such as ice wedging. Chemical uses natural acids such as carbonic acid to weaken the rock. Animals use force to break rocks apart and Plants tannic acid weakens the rock.


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weathering and erosion practice test.notebook

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