powerpoint presentation

2. NEW B.Ed college Nellimoodu
Name of the teacher : Aswathy N
Name of the subject : social science
Candidate code :169/14376004

3. TOPIC
Factors influencing soil
formation
Standard : VIII

4. The soil we see today is formed by prolonged
processes like weathering of rocks and
decomposition of organic matter. There are
many factors which influencing the formation
of soil.

5. Factors influencing soil formation
soil
climate
topography
Parent rocktime
Plants and
animals

6. •Soil formation will be slow in cold environments.
•Soil formation will be very fast in wet
environments.

7. Soil will be thin along steep slopes.
Soil will be very thick along the plain
region

8. The acid formed as a result of the decaying
of plants and animals cause weathering of
rocks
The fertility of soil will be increased due to the
decaying of plants animals

9. The minerals in the soil and the structure
of the soil depends on the rock from
which it is formed.
The formation of the black soil due to the
decaying of Basalt rock

10. The thickness and structure of soil depends
on the time taken for its formation.
To form an one inch of soil need more than
thousand years.

11. Write a short note about the different
factors which affecting the formation
of soil ?