Distinguish between Mechanical and Chemical Weathering.

Solution

Mechanical Weathering

Chemical Weathering

1. It is also called physical weathering.

2. It is responsible for the disintegration of rocks without changing their chemical compositions.

3. It is caused about mainly by changes in temperature and the pressing action of water.

4. It is physical break up of rocks owing to internal and external stresses caused by weathering agents.

1. Chemical weathering includes the processes that cause rock to rot or decay due to the action of air and water on the minerals present in the rock.

2. High temperature and humidity caused the rock to decompose.

3. Chemical weathering results from the action of weak acids and gases like oxygen, carbon dioxide and hydrogen.

4. It is the process which leads to the decomposition or decay of solid rocks by means of chemical reactions.

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