Question

5. How does frost action cause weathering?
6. Name the different processes of chemical weathering
7. What is hydration?
8. Describe the work of plants as agents of weathering.
9. Which human activities lead to weathering of rocks?
10. State the effect of weathering.
11. What happens when the river is in its upper course?
12. How is a waterfall formed?
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Answer 1

Answer:

Mechanical weathering physically break up rock . One example is called frost action or frost shattering . Water gets into crack and join in bedrock . When the water freeze it expands and the crack are opened a little wider .

6. Chemical weathering happened when rock's are broken down and chemically altered . chemical weathering including hydrolysis , oxidation, carbonation, acid rain and acids produced by lichens .

7. The process of causing something to absorb water.

8. Plant can causephysically weathering as their root grow . seeds of plants can grow inside rock crack where soil has collected .

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