The presentation discusses the processes of weathering and erosion. It defines weathering as the breakdown of rocks through physical or chemical means without transportation, while erosion is the transportation and deposition of weathered materials by agents such as wind, water or ice. The key types of weathering are physical weathering which breaks rocks into smaller pieces without chemical change, and chemical weathering which alters the chemical composition of rocks through processes like oxidation and carbonation.

1. Group :
1
Presentation :
Weathering
Presenting member’s:
Sadam Hussain
Khadam Hussain
Ghulam Qader
Inam Ghus

2. weathering

3.  Physical [mechanical] Weathering
 Chemical Weathering

4. Physical Weathering
“Process by which rocks are broken down into
smaller pieces by external conditions and no
changes in chemical composition ’’.
Types of Physical weathering
•Frost heaving and Frost wedging
•Plant roots
•Friction and impact
•Burrowing of animals
•Temperature changes

5. Chemical Weathering
“the processes of chemical weathering
transform rocks and minerals exposed
to water and air and produce new
chemical product.
The most common chemical
weathering processes are
•oxidation,
• reduction,
•carbonation, and solution.

6. Is the process by which soil and rock are removed from the Earth's
surface by natural processes such as wind or water flow, and
then transported and deposited in other locations.
•Transportation, the movement of eroded particles by agents . such as
•Rivers, wave ,glacer’s,wind.

7. There are diferente types of
erosion:
 Wind erosion,
 Water erosion,
Gravitational erosion,
Coastal erosion

9. Difference b/w weathering and erosión .
Weathering,
is the breakdown of rocks and
minerals in earth crust into sediments.
Erosion ,
Weathered rocks and minerals are carried away by
Gravity , water , wind and ice called erosion.

10. Weathering and earth system
• Atmosphere
gases
•Hydrosphere
(CO2, O2, N)
water,moisture,snow
•Biosphere
Plant , animals after die ,bacteria,
bulldozer/ cars , grazing