Available Answers

1. 1.

   Solve the jumbled words to give a meaningful word related to water cycle.

   1. ntciepirtaipo
   2. wruondn rawet
   3. aitfinlronit
   4. onwtrdgaeru
   5. atooniaervp
   6. tspratniaoinr
   7. duclos

   

2. 2.

   Observe Figure 16.4 and answer the following questions.

   1. What percentage of the earth's water is fresh water?
   2. What percentage of fresh water is found in solid state? Can we directly use this water for ourselves?
   3. What percentage of fresh water is of found as groundwater? Can we use this water for ourselves?
   4. What percentage of water is as accessible as surface fresh water?
   5. Maximum water in liquid state is available in oceans. Why cannot we make optimum use of this water?

   

3. 3.

   Fill in the blanks.

   1. ______________ percentage of the earth's water is fresh water.
   2. The water on the earth remains constant due to ______________.
   3. ______________ is the primary source of non-saline water.
   4. We need to dig or drill to gain access to the ______________ sources.
   5. The groundwater provides ______________ for the surface water.
   6. Rainfall is ______________ throughout the earth.
4. 4.

   When do we celebrate 'Water Day'?

5. 5.

   Give examples of all three states of water found in nature.

6. 6.

   From where do we get tap water?