The document is a power point presentation about weathering submitted by Shibina Beegum N.R. It defines weathering as the disintegration or decomposition of rocks and identifies the three main types as physical/mechanical weathering, chemical weathering through reactions with oxygen, carbon dioxide and water, and biological weathering caused by plant roots and animal burrowing. It notes that weathering helps humans by extracting minerals for quarrying and mining, enabling construction works, and causing soil formation.

1. POWER POINT PRESENTATION
Submitted by,
Shibina Beegum N.R.
Social Science
Date: 4/08/2015
Tuesday

2. WELCOME

3. WEATHERING
Disintegration or
decomposition
of rocks is known as
Weathering.

4. TYPES OF WEATHERING
 Physical / Mechanical Weathering
 Chemical Weathering.
 Biological Weathering.

5. PHYSICAL / MECHANICAL WEATHERING

6. CHEMICAL WEATHERING
Oxygen, Carbon dioxide, Water
etc….react with the minerals and
result in the Chemical de
composition of rocks

7. BIOLOGICAL
WEATHERING
The plant roots penetrating into the fissures in
rocks, burrowing of animals and the decomposition
of plant and animal remains leads to biological
weathering.

9. Quarriying Mining
Constructive works Deforestation

10. WEATHERING HELPS HUMANS
IN MANY WAYS
 Minerals in rocks get
extracted.
 Helps in mining.
 Causes soil formation.

11. THANK YOU