Weathering

Question 1

What word matches this definition?

Water seeps into cracks and freezes it then expands. This powerful force can increase size of cracks. Over time the repeated freeze-thaw action of water can break rocks apart

Answer 1

Physical weathering

-freeze thaw

Question 2

What word matches this definition?

This causes an alteration to the chemical composition of rocks due to a reaction. water that is slightly acidic can dissolve rock.

Answer 2

Chemical weathering

Question 3

What word matches this definition?

This is the effect of living things. For example as the roots of a tree extend into the ground they can prise rocks apart. Burrowing animals will also breach rocks apart.

Answer 3

Biological weathering