Infiltration

Q. Which of the following combines with water vapour or rain water to form acid rain?

1. Carbon particles
2. Oxygen
3. Sulphur dioxide
4. Dust

Q. What is acid rain? What are the various components of acid rain? Why is it harmful? [3 Marks]

Q. The air smells fresh and clean after it rains

Q.

Rain water harvesting refers to

1. Collecting rainwater where it falls

2. Developing chain of tube wells for crop harvesting.

3. Crop irrigation technique

4. Water Cycle

Q.

______ is a process in which rain water seeps inside the ground.

1. Wood

2. Ground

3. Filter paper

4. Everything

Q. Sheetal's village receives rainfall less frequently. But whenever it rains, the intensity of rainfall is too high that the rainwater that falls on the ground flows away fast. This prevents the recharging of groundwater. Which amongst the following method can sheetal use to solve this problem?

1. Digging up borewells
2. Drip irrigation
3. Rainwater harvesting
4. Cementing the ground

Q. Infiltration is lower in hilly areas.

1. True
2. False

Q. Aparna observed that puddle disappeared quickly under sunlight. This was because the water

1. evaporated
2. sublimed
3. froze
4. condensed

Q.

Water droplets on glass of water and water cycle both work on different principle.

1. True

2. False

Q.

The ground water level of a particular area will increase if:

1. None of the above

2. Rate of evaporation < Amount of ground water used

3. Amount of rainfall < Amount of ground water used

4. Amount of infiltration > Amount of ground water used

Q. The source of water droplets on grass in the morning is .

1. soil
2. grass
3. air

Q.

The groundwater level of a particular area will increase if:

1. Amount of rainfall < Amount of ground water used

2. Amount of infiltration > Amount of ground water used

3. Rate of evaporation < Amount of ground water used

4. None of the above

Q.

The ground water level of a particular area increases if:

1. Amount of rainfall < Amount of ground water used

2. Amount of infiltration > Amount of ground water used

3. Rate of evaporation < Amount of ground water used

4. None of the above

Q.

Which of the following statements is correct? [3 MARKS]
a) Collection of rainwater in overhead tanks helps in conservation of water.
b) Rainwater is responsible for replenishing of groundwater and collecting it would hamper the process. This practice would decrease water table levels and would make it difficult for us to access water.

Q. Is it true that all the water that falls on the earth as rain, snow or hail ultimately goes into the oceans? Explain your answer.

Q. Aparna observed that puddle disappeared quickly under sunlight. This was because the water

1. evaporated
2. condensed
3. froze
4. sublimed

Q. The ground water level of a particular area will increase if:

1. Amount of infiltration < Amount of ground water used
2. Rate of evaporation < Amount of ground water used
3. Amount of infiltration > Amount of ground water used
4. Rate of evaporation > Amount of ground water used

Q. The water that comes down as rain infiltrates through the soil.

1. True
2. False

Q. How do areas covered with concrete affect the availability of groundwater?

1. Do not affect the availability of groundwater
2. Reduce the seepage of rainwater into the ground, thereby reducing the availability of groundwater
3. Reduce seepage of rainwater into the ground, thereby increasing the availability of groundwater
4. Increase the seepage of rainwater into the ground, thereby reducing the availability of groundwater

Q. The rate of infiltration through concrete is more than that in soil.

1. True
2. False

Q. Ground water gets recharged by:

1. Industrial development
2. Transpiration
3. Infiltration
4. Transportation

Q.

Acid rain pollutes

1. Air

2. Water

3. Soil

4. Both soil & water

Q. Rainwater harvesting means
(a) harvesting of crops during rains.
(b) using rainwater to add to underground water.
(c) storing rainwater in tanks.
(d) both b and c

Q.

______ is a process in which rain water seeps inside the ground.

1. Wood

2. Ground

3. Filter paper

4. Everything

Q. Rainwater seeping into the ground is

1. infiltration
2. precipitation
3. sedimentation
4. condensation