Weathering

Question 0

Explain the process of exfoliation. (Onion skin weathering)

Answer 0

1. During the day, the rock will absorb energy from the sun and will expand.
2. At night, this energy will be lost and the rock will shrink.
3. This process will repeat over and over again until the first layer of the rock will start to peel off.

Question 1

What is freeze thaw action?

Answer 1

1. A rock is exposed to freezing temperatures.
2. Eventually, a crack will appear in the rock.
3. Water will go into the crack.
4. This water will freeze and expand, making the crack bigger, until the rock splits into two smaller rocks.

Question 2

.Biological weathering.

Answer 2

1. Building is abandoned.
2. Soil, water and a seed will fall on the roof.
3. The seed will grow into a tree.
4. The tree will grow into the building.