Module 2: Changing Face of the Earth - HW-02-02

Chapter Name - EARTH’S INTERIOR AND ITS MATERIAL - 2
---------------------------------------------------------------

#. Answer the following Topics in 6 lines only or 6 points :

T1. EARTH’S INTERIOR

T2. STRUCTURE OF THE EARTH’S INTERIOR
(A) Ancient Period
(B) Pre-Modern Period
(C) Modern Period
(D) Recent Period

T3. TEMPERATURE, PRESSURE AND DENSITY OF THE EARTH’S INTERIOR
1.  Temperature
2.  Pressure
3.  Density

T4. MATERIALS OF THE EARTH’S CRUST

T5. TYPES OF ROCKS
1.  Igneous Rocks
2.  Sedimentary Rocks
3.  Metamorphic Rocks

T6. ECONOMIC SIGNIFICANCE OF ROCKS
1.  (a) Soils: 
2.  (b) Building Material:
3.  (c) Mineral Source:
4.  (d) Raw Material: 
5.  (e) Precious Stones:
6.  (f) Fuel: 
7.  (g) Fertilizer:

T7. WHAT IS WEATHERING?

T8. TYPES OF WEATHERING
1. Physical Weathering
(a) Block disintegration
(b) Exfoliation
(c) Frost Action
2. Chemcial weathering
(a) Oxidation
(b) Carbonation
(c) Hydration
(d) Solution
3. Biotic weathering
(a) Plants
(b) Animals
(c) Man

T9. WEATHERING AND SOIL

T10. GRADATION
(a) Degradation
(b) Aggradation

T11. SOIL AND ITS FORMATION
(A) FACTORS OF SOIL FORMATION
(a) Parent rock
(b) Relief
(c) Time
(d) Climate
(e) Plant and Animal Organisms
T12. SOIL HORIZONS

T13. SOIL EROSION
(a) Type of Soil Erosion
(i) Wind Erosion
(ii) Sheet Erosion
(iii) Rill Erosion
(iv) Gully Erosion

T14. SOIL CONSERVATION
(a) Protection of forests : 
(b) Afforestation : 
(c) Flood Control : 
(d) Planned Grazing :
(e) Bunding:
(f) Terracing: 
(g) Contour Ploughing :
(h) Adoption of Strip Farming:
(i) Crop Rotation:
(j) Reclamation of Lands: