weathering

2. ARCHANA.K.V.
2ND YEAR BE.d
GEOGRAPHY
REGISTER NUMBER

3. WEATHERING

4. WEATHERING
DISINTEGRATION OR DECOMPOSITION
OF ROCKS IS KNOWN AS WEATHERING

5. DIFFERENT TYPES OF WEATHERING
1. PHYSICAL/MECHANICAL WEATHERING
2.CHEMICAL WEATHERING
3.BIOLOGICAL WEATHERING

6. PHYSICAL WEATHERING
 The expansion and contraction of minerals due to
the variations in temperature.
 The freezing of water in the fissures of rocks.
 These result in physical weathering.

9. CHEMICAL WEATHERING
These weathering happens when the oxygen ,carbon
di oxide and water came in contact with the minerals
in the rocks.

11. BIOLOGICAL WEATHERING
 Weathering caused by the plants and animals
 The root of plants, decomposition of plants and
animals remains.
 Human activities like mining and quarrying.
 These processes cause biological weathering.