Weathering is breaking down rocks.

Physical weathering is making small rocks bigger.

Physical weathering does not change the chemical composition of rock.

Oxidation is chemicals in rocks combining with oxygen.

Oxidation never changes the color of rock.

Acids produced by living plants cannot cause chemical weathering.

Temperature change weathering occurs frequently in the desert.

Ice wedging occurs frequently near the equator.

Animals cannot affect physical weathering.

Exfoliation is a type of chemical weathering.

Plant wedging is a type of physical weathering.

Ice wedging is rocks rubbing together.

Abrasion can be cause by wind, water, and gravity.

Acid precipitation is only snow.

Caves can be formed by chemical weathering.

Acid precipitation can cause rocks to look *melted.*

Water expands (gets bigger) when it freezes.

Plant roots are not strong enough to weather rocks.

Acid precipitation is a type of physical weathering.

Dissolved rock material in ground water is an example of chemical weathering.

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