Geoscience Vocab 2

Question 1

Physical weathering

Answer 1

Processes that break down rock without changing their chemical composition

Question 2

Frost action

Answer 2

The breaking down of rock by the force exerted by water expanding as it freezes into ice.

Question 3

Abrasion

Answer 3

The breaking down of rocks by rubbing together

Question 4

Exfoliation

Answer 4

The scaling off or peeling of successive layers of rock

Question 5

Pressure unloading

Answer 5

The stress release on rocks

Question 6

Chemical weathering

Answer 6

Processes that break down rock by changing its chemical composition

Question 7

Oxidation

Answer 7

Rust, substances that combine with oxygen in a chemical reaction

Question 8

Hydration

Answer 8

A chemical reaction that water is combined with a substance.

Question 9

Hydrolysis

Answer 9

A reaction in which water separates into hydrogen ions

Question 10

Carbonation

Answer 10

A reaction in which carbon dioxide combines with a substance

Question 11

Weathering

Answer 11

The break down of rocks into smaller particles by natural processes