Soil Erosion

Q.

What steps can be taken to control soil erosion in the hilly areas?

Q.

In which one of the following states is terrace cultivation practised?

1. Punjab

2. Plains of Uttar Pradesh

3. Haryana

4. Uttarakhand

Q. All of the following are ways to prevent soil erosion, except__________.

1. Monitored grazing
2. Scraping of forest floor
3. Vegetation cover
4. Contour bunds

Q.

Question 49
Why is step farming common in hills?

Q.

What is terracing ?

Q. helps in preventing soil erosion.

1. Afforestation
2. Deforestation
3. Over-grazing

Q.

The carrying away of the upper fertile layer of the soil by wind or water is called ___ .

1. Soil detention
2. Soil growth
3. Soil erosion
4. Soil concatenation

Q.

How many nutrients that are essential for plant growth are supplied by soil

1. Twelve

2. Thirteen

3. Six

4. Fifteen

Q.

What is waterlogging. Give one disadvantage of waterlogging.

Q.

What is function of wind breaks ?

Q.

Define soil erosion. Give its causes, effects and preventive measures.

Q. Which of the following rabi crops would be preferred for sowing in order to enrich the soil with nitrogen?

1. Gram
2. Wheat
3. Mustard
   
4. Sunflower
   

Q. Which of the following methods helps in preventing soil erosion?

1. Overgrazing
2. Deforestation
3. Afforestation
4. Manuring

Q.

Name two measures which prevent the soil erosion.

Q.

_____is the dead and decaying bits of animals and plants present in the topmost layer of soil.

1. Bedrock
2. Humus
3. Clay
4. Pollutants

Q. Which of the following soil is the best for plant growth?

1. Sandy soil
2. Loamy soil
3. Gravel
4. Clay

Q.

How is soil erosion caused?

Q.

Which of the following do not prevent soil erosion?

1. Terrace farming

2. Aforestation

3. Grafting

4. Mixed farming

Q. Heavy rain is the only reason for soil erosion.

1. False
2. True

Q.

What is soil erosion ? Explain means of preventing it.

Q.

In which of the following regions, reversion of soil erosion is very difficult?

1. Hilly regions

2. Bare vegetation

3. Mountains

4. All of the above

Q. What can be the impact of soil erosion?

1. Loss of fertile land
2. Improve soil texture
3. Leads to increased pollution and sedimentation in streams and rivers.
4. Acidity level of soil increases.

Q. Choose the areas where preventing of soil erosion is difficult.

1. Rainforests
2. Mountains
3. Bare vegetation
4. Cover crop

Q. Sun, water, wind and living organisms are main factors that influence the formation of soil from the rocks.

1. True
2. False

Q.

Enlist the main causes of soil erosion. [2 MARKS]

Q.

Question 29
What happens when rain falls on soil without the vegetational cover?

(a) Rainwater percolates in soil efficiently
(b) Rainwater causes loss of surface soil
(c) Rainwater leads to the fertility of the soil
(d) Rainwater does not cause any change in soil

Q. Question 32
How can we prevent the loss of top soil?

Q.

Give two effects of soil erosion.

Q.

How can we prevent the loss of top soil ?

Q. What is soil fertility? What are the sources of soil fertility?