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WELCOME
Name : AJITHAMOL B. S. 
Subject : Social Science 
College : New B.Ed. College Nellimoodu 
Candidate Code : 169/13376001
Topic 
WETHERING
THE ROCKS BREAK INTO 
SMALL PIECES IS CALLED 
WEATHERING
WHETHERING IS MAINLY 
3 TYPES 
1.MECHANICAL WEATHERING 
2. CHEMICAL WEATHERING 
3. BIOLOGICAL WEATHERING
1.MECHANICAL WEATHERING 
Changes in temperature and the 
freezing of the water in the cracks of 
the rocks cause mechanica...
Alternate expansion and contraction 
causes the outer surface of the rocks 
to break into layers. This kind of 
peeling aw...
2. CHEMICAL WEATHERING 
When the rain falls on the rocks 
chemical action takes place between 
the minerals in the rocks a...
3. BIOLOGICAL WEATHERING 
The roots of the trees penetrate into 
the cracks of the roots and small 
creatures make their h...
THANK YOU
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POWER POINT PRESENTATION BEd

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POWER POINT PRESENTATION

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POWER POINT PRESENTATION BEd

  1. 1. WELCOME
  2. 2. Name : AJITHAMOL B. S. Subject : Social Science College : New B.Ed. College Nellimoodu Candidate Code : 169/13376001
  3. 3. Topic WETHERING
  4. 4. THE ROCKS BREAK INTO SMALL PIECES IS CALLED WEATHERING
  5. 5. WHETHERING IS MAINLY 3 TYPES 1.MECHANICAL WEATHERING 2. CHEMICAL WEATHERING 3. BIOLOGICAL WEATHERING
  6. 6. 1.MECHANICAL WEATHERING Changes in temperature and the freezing of the water in the cracks of the rocks cause mechanical weathering
  7. 7. 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
  8. 8. 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.
  9. 9. 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.
  10. 10. THANK YOU

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