Weathering
Abrasion
Abrasion causes weathering because friction.
Acid Rain
Acid Rain has a pH of 4.5 or less and causes more chemical weathering than normal rain.
Animals
Animals causes weathering because they burrow and dig.
Chemical Weathering
Chemical makeup of rock changes forever.
Ice Wedging
Ice Wedging causes weathering because water gets in the crack, freezes and expands.
Intense Temperature
Intense Temperature causes weathering because heat expands.
Mechanical Weathering
Mechanical Weathering breaks down rock into sediment, but chemical makeup does not change.
Normal Rain
Normal Rain has a pH of about 5.6 and can cause weak acid.
Oxidation
Oxidation is the process that combines water and oxygen which forms rust.
Plants
Plants causes weathering because their roots.
Weathering
Weathering is the breaking down of rocks or materials.