Weathering Flashcards

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1
Q

Physical Weathering

A

Is when factors in the environment break down the rock.

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2
Q

Physical Weathering (types)

A

Abrasion - physical grinding by wind, water, gravity, plants, and animals.
Frost hedging - water freezes in between cracks and expands.
Thermal stress - rock contracts and expands due to temperature changes.

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3
Q

Chemical Weathering

A

When a chemical reaction occurs, creating a new substance.

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4
Q

Chemical Weathering (types)

A

Oxidation - when the iron in the rock combines with oxygen creating rust.
Hydrolysis - hydrogen replaces the ion in the rock or mineral.
Carbonation - mixing water and carbon dioxide to make carbonic acid. This dissolved certain rocks like limestone (caves).

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5
Q

Weathering?

A

Breaks the rock down, a physical or chemical change that changes the chemical characteristics of rocks on Earth.

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