Freshwater Distribution

Q.

What are the sources of water on the earth?

Q.

Where do we get water from? [1 MARK]

Q.

Name the sources of surface water.

Q.

What do you understand by rain water harvesting? Why is it important? [5 MARKS]

Q. Which of the following is a primary source of water on land?

1. Lakes
2. Tanks
3. Ponds
4. Rain water

Q.

Question 4

Water in our tap comes from a
(a) River
(b) lake
(c) well
(d) All of these

Q.

What happens to the water in wet clothes when they are kept in sunlight?

1. Ground water transfer via pipes

2. Rainwater harvesting

3. No help can be provided

4. By digging wells to store rain water in Pune

Q.

Describe in detail the following terms: Surface water.

Q. Which of the following causes a decrease in the water table?

1. Lack of rain water harvesting infrastructure.
2. Drip irrigation
3. Cloud seeding
4. Growing trees

Q.

Explain the sources of water above the earth’s surface.

Q.

How does the failure of rainfall affect people on the earth?

Q.

The water in lakes, ponds and other water bodies are millions of years old.

1. True

2. False

Q. Which of the following activities does not involve the use of water?

1. Drying wet clothes
2. Washing clothes
3. Bathing
4. Cleaning utensils

Q.

Name four sources of water. [2 MARKS]

Q.

How does shade balls help in stopping evaporation?

Q.

Which of the following is the primary source of water on land?

1. Lakes
2. Tanks
3. Ponds
4. 
   

   Rain water

Q.

How does the failure of rainfall affect people on the earth?

Q. State whether the following statements are true or false. If false, correct them.
Air helps in the movements of sailing yachts and glider but plays no role in the flight of birds and aeroplanes.

1. True
2. False

Q.

Which of the following is the primary source of water on land?

1. Lakes
2. Tanks
3. Ponds
4. 
   

   Rain water

Q. Identify the sources of water that can be used for agricultural purposes.

1. River
2. Pond
3. Well
4. Sea

Q. Natural water is:

1. spring water
2. river water
3. rain water
4. well water

Q.

We can broadly classify water into saline water, frozen water and usable surface water. Which of the following correctly represents their relative amount on the Earth?

1. Frozen water > Usable surface water > Saline water
2. Usable surface water > Frozen water > Saline water
3. Saline water > Frozen water > Usable surface water
4. Saline water > Usable surface water > Frozen water

Q. Which of the following are sources of fresh water?

1. Rain
2. Well
3. Sea
4. River

Q. The water in lakes, ponds and other water bodies is recycled for millions of years.

1. True
2. False

Q. Which of the following are sources of freshwater?

1. Lake
2. Ocean
3. River
4. Groundwater
5. Glacier
6. Polar ice cap
7. Sea
8. Pond

Q. What is rainwater harvesting ?

1. Storing groundwater present in wells.
   
2. Stopping the cultivation of crops to save water
   
3. The seeping of water into the ground
   
4. Collecting rainwater and storing it for future use

Q. Icecaps and glaciers comprise of approximately 70% of freshwater that are accessible.

1. False
2. True

Q.

Which of the following would not be effective in reducing air pollution?

1. Use of solar energy
2. Use of CNG
3. Use of fossil fuel
4. Use of electric cars