WEATHERING OF ROCKS

Question 1

What are the 3 types of weathering?

Answer 1

Physical, Chemical and Biological

Question 2

What is physical weathering?

Answer 2

It is the process of the breaking down of rocks due to physical changes.

Question 3

What is chemical weathering?

Answer 3

It is the process of weathering rocks by chemicals.

Question 4

What is biological weathering?

Answer 4

It is the process where living things such as plants, animals and microbes break down the rocks (disintegrate).

Question 5

Processes of Physical Weathering

Answer 5

In hot weather, the rocks expand; while;e inc old weather, the rocks contract. As it expands and contracts, cracks may Forman pieces of rock will break.

Freeze and Thaw. Water enters into the cracks of a rock and freezes. It expands and makes the crack even bigger until the rock breaks apart.

Question 6

Process of Chemical Weathering

Answer 6

Acid rainwater will damage rocks and new substances are formed during reaction

Question 7

Processes of Biological Weathering

Answer 7

Weeds growing through cracks.

Animals can burrow into cracks and break the rocks too.