Weathering

Question 1

Physical Weathering

Answer 1

Is when factors in the environment break down the rock.

Question 2

Physical Weathering (types)

Answer 2

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.

Question 3

Chemical Weathering

Answer 3

When a chemical reaction occurs, creating a new substance.

Question 4

Chemical Weathering (types)

Answer 4

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).

Question 5

Weathering?

Answer 5

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