Available Answers

1. 1.

   Check point:

   1. How much of the Earth's surface is covered with water?
      1. 2/3
      2. 3/4
      3. 1/2
      4. 1/4
   2. The water table in an area will go down when _____________.
      1. We do not use groundwater
      2. We plant too many trees causing loss of water by transpiration
      3. We use groundwater slowly
      4. We use groundwater faster than it is replenished
   3. This method does not result in conservation of water.
      1. Using drip
      2. Recycling of water
      3. Planting more trees
      4. Cutting vegetation
   4. The total water _____________.
      1. In the lakes and rivers of the world remains constant
      2. Under the ground remains constant
      3. Of the world remains constant
      4. In the seas and oceans of the world remains constant
   5. Which of the following is not responsible for water shortage?
      1. Rapid growth of industries
      2. Heavy rainfall
      3. Increasing population
      4. Mismanagement of water resources
2. 2.

   True-False:

   1. Rainwater harvesting lowers the water table.
   2. Population growth is a major reason for water scarcity.
   3. Ocean water can be used for drinking and irrigation.
   4. The water that is present beneath the Earth's surface is called groundwater.
   5. We do not conserve water as it is present in abundance.
   6. There is an even distribution of water over the whole Earth.
   7. Bawris are the traditional structures to store the rainwater.
3. 3.

   Fill in the blanks:

   1. Buildings and roads reduce _____________ of water by the soil.
   2. Three forms of water are _____________, _____________ and _____________.
   3. The water bearing layer of the Earth is _____________.
   4. The process of water seepage into the ground is called _____________.
   5. About 97.4% of the total water on the Earth is present in the _____________ and _____________.
   6. Increase in _____________ has increased the demand for groundwater.
   7. World Water Day is celebrated every year on _____________.
4. 4.

   Name any one body process which requires water.
5. 5.

   What is the groundwater stored between layers of hard rock below the water table known as?
6. 6.

   How much water is required per person per day according to the U.N.?