Available Answers

1. 1.

   Choose the correct answer.

   1. The weathering of rocks results in the formation of
      1. coal
      2. petroleum
      3. soil
      4. fossils
   2. The carrying away of top fertile soil is called
      1. soil profile
      2. soil erosion
      3. soil conservation
      4. soil fertility
   3. A natural cause of soil erosion among the following, is 
      1. wind
      2. running water
      3. heavy rain
      4. all of these
   4. Soil can be conserved by 
      1. terrace farming
      2. deforestation
      3. overgrazing
      4. ploughing hill sides
   5. Cover crops are grown to 
      1. reduce soil erosion
      2. increase soil fertility
      3. raise the income of the farmers
      4. all of these
   6. Cutting down trees in large number is called
      1. afforestation
      2. deforestation
      3. plantation
      4. overgrazing
   7. Terrace farming is a good measure to reduce soil erosion in
      1. hilly regions
      2. tarai regions
      3. deserts
      4. flood prone regions
   8. One of the main reasons of spreading deserts is
      1. soil conservation
      2. soil erosion
      3. heavy rain
      4. melting mountains 
   9. The method of farming in which the slope is cut into steps is called
      1. jhoom farming
      2. intensive farming
      3. terrace farming
      4. extensive farming
   10. The statement not true about soil is
       1. it is the most important natural resources
       2. it is the medium of plant growth
       3. it supports life on the earth
       4. it crries information
2. 2.

   What is the main medium of growing plants of the earth?
3. 3.

   Name the process due to which rocks are broken by the action of sun, rain or wind.
4. 4.

   What are the natural agents of soil erosion?
5. 5.

   In which areas terrace farming is a good measure to reduce soil erosion?
6. 6.

   How do forests help in soil conservation?