Our earth is made up rocks.

Rocks are composed minerals.

Our earth itself is changing.

I.e., rocks are getting changed.

The process of disintegration and

decomposition of rock in generally called

weathering .

Composition and structure of rock

Nature of ground slope

Climatic variations

Floral effects

Wind

Glacier

Running water

Sea waves

under ground water

1. Physical weathering

2. Chemical weathering

3. Biological weathering

Also known as mechanical weathering.

It is caused by the change temperature.

Due to expansion and contraction rocks break up.

Physical weathering happen due to the process of,

Changing of temperature

Freezing action of water

Roots growing plants which disintegrate rocks

Decomposition and disintegration of rocks due to chemical reaction.

Water causing a change in the chemical composition of rocks.

1.Solution It is refers to the dissolution of soluble particles and

minerals from the rocks.

2.Oxidation It is a reaction of atmospheric oxygen to from oxides.

3.Carbonation It is a reaction of carbonate or bicarbonate ions with

minerals.

4.Hydration The process of hydration is related to the addition of

water to the minerals.

Oxidation

The action of plants and animals leads to breaking of rocks.

Roots causing disintegration of rocks.

The roots of the trees penetrate into the cracks of the rocks.

Burrowing animals

Quarrying

By human excreta

Weathering leads to soil formation.

There are three types ,physical ,chemical ,biological weathering.

Topography ,climate , characteristic of rocks etc .. Influence weathering .