Page 172 - Science Class 06

2. Aqua c animals and plants die due to loss of habitat during a drought.
3. Flood caused by the rivers make the soil fer le.

4. Rain water harves ng is a method to recharge groundwater.
5. Nitrogen does not support burning, but controls burning.
D. Write the causes of the following natural disasters.

1. Drought : _________________________________________________________________
_________________________________________________________________________
2. Flood : ___________________________________________________________________
_________________________________________________________________________

E. Very short answer ques ons.
1. Write any two uses of water.
2. What is hydrosphere?

3. What are the two main sources of water?
4. What is rainwater harves ng?
5. What is respira on?
6. Name the components of air.

7. What is atmosphere?
8. What is the use of neon gas?
F. Short answer ques ons.
1. Write any four important uses of water.

2. How the amount of groundwater is maintained?
3. Write the causes of low rainfall.
4. Write the effects of drought on people.
5. Write the nega ve effects of flood on soil.

6. What are the uses of air?
7. How does atmosphere maintain the temperature of the earth?
8. Write the importance of water vapour.

9. Can you tell the causes of lowering of the water-level in Delhi and other big ci es?
10. Differen ate between flood and drought.
11. Wet clothes dry quickly during the summer season than winter. Why?
G. Long answer ques ons.

1. Explain natural resources.
2. Describe the availability of water on the earth in a short paragraph.
3. Explain drought with its causes and effects.

4. Explain floods with its causes and effects.
5. Why do plants need air?
6. Explain the components of air and their importance.

172 Science-6