WEATHERING PREREQUISITE

What are the main processes and factors involved in the weathering of rocks?

1. Which of the following is an example of mechanical weathering?

• a) Acid rain dissolving limestone

• b) Tree roots growing into cracks in a rock and breaking it apart

• c) Rusting of iron in a metal fence

• d) Dissolution of salt crystals in porous rock

2. Chemical weathering is primarily driven by:

• a) Physical forces such as wind and water

• b) Temperature changes

• c) Biological activity and acidic reactions

• d) Abrasion and collision of particles

3. Which of the following factors does NOT influence the rate of weathering?

• a) Climate

• b) Rock type and mineral composition

• c) Altitude

• d) Vegetation cover

4. Which type of weathering involves the expansion and contraction of rock due to temperature changes?

• a) Biological weathering

• b) Chemical weathering

• c) Frost action

• d) Salt crystallization

5. The formation of caves in limestone landscapes is primarily a result of:

• a) Oxidation

• b) Carbonation

• c) Hydration

• d) Biological activity