WELCOME

Name : AJITHAMOL B. S.Subject : Social ScienceCollege : New B.Ed. College NellimooduCandidate Code : 169/13376001

Topic WETHERING

THE ROCKS BREAK INTO SMALL PIECES IS CALLED WEATHERING

WHETHERING IS MAINLY 3 TYPES

1.MECHANICAL WEATHERING2. CHEMICAL WEATHERING3. BIOLOGICAL WEATHERING

1.MECHANICAL WEATHERING

Changes in temperature and the freezing of the water in the cracks of the rocks cause mechanical weathering

Alternate expansion and contraction causes the outer surface of the rocks to break into layers. This kind of peeling away of rock layer is called EXFOLIATION

2. CHEMICAL WEATHERING

When the rain falls on the rocks chemical action takes place between the minerals in the rocks and the rain water. As a result of this there can be disintegration of the rocks. This is called chemical weathering.

3. BIOLOGICAL WEATHERING

The roots of the trees penetrate into the cracks of the roots and small creatures make their homes in these spaces. These also cause the disintegration of rocks. This is called biological weathering.

THANK YOU