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1. 1.

   Match the following.

   Column A	Column B
   1. 97% of water	a. Plants
   2. Artificial watering	b. Epidemic
   3. Transpiration	c. Salt water
   4. Drought	d. Irrigation
   5. Flood	e. Famine

    

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   Answer:

   S A M P L E

   1. (c) Salt water
   2. (d) Irrigation
   3. (a) Plants
   4. (e) Famine
   5. (b) Epidemic
2. 2.

   Say T for the true statement and F for the false one.

   1. The highest percentage of water is needed for domestic needs.
   2. A lot of water escapes into the atmosphere through condensation.
   3. Water cycle involves only evaporation and condensation.
   4. Famine is a type of disease affecting thousands of people at the same time.
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   Answer:

   S A M P L E

   1. F The highest percentage of water is needed for agriculture,...
   2. F A lot of water escapes into the atmosphere through transpiratio...
   3. F Water cycle ...
   4. ...
3. 3.

   Write T for the true statement and F for the false one. Correct the false statement(s).

   1. Lack of food in the region is known as drought.
   2. During a flood, the entire area remains  abnormally insufficient of water.
   3. During an endemic, many people get affected by diseases at the same time.
   4. Building a dam helps to control only famine.
   5. Garbage and harmful chemicals pollute the water.
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   Answer:

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   1. F Lack of food in the region is known as famine, not drought...
   2. F During a flood, the entire area remains abnormally full of water, not insufficient...
   3. ...
   4. F...
   5. ...
4. 4.

   Choose the correct option.

   1. How much of the Earth's water is readily available to us as fresh water?
      1. 97%
      2. 3%
      3. 75%
      4. None of these
   2. What is water used for human consumption known as?
      1. Potable water
      2. Irrigation water
      3. Rainwater
      4. None of these
   3. The conversion of liquid to its vapour form happens by the process of
      1. condensation
      2. precipitation
      3. evaporation
      4. none of these
   4. Which of the following processes play a key role in cloud formation and rain?
      1. Evaporation
      2. Condensation
      3. Respiration
      4. Both a and b
   5. Cloud is a cluster of
      1. tiny droplets of water
      2. water vapour
      3. steam
      4. fog
5. 5.

   Write T for the true statement and F for the false one. Correct the false statement(s).

   1. Apart from irrigation and industrial user, water is also used for transportation and recreation.
   2. Conversation of liquid to its vapour form is called evaporation.
   3. When there is lack of food in the region, it causes epidemic.
   4. Watering by hand saves a lot of water as against using a hose.
   5. A tap is an answer for both drought and flood.
6. 6.

   Write two examples for each of the following.

   1. Natural sources of salty water
   2. Industrial uses of water
   3. Ways of saving water
   4. Pollutants of water