Page 105 - Science - 5

Substituting Yourself
Substituting Yourself

Give one word for each of the following :

1. The layer of soil with lumps of rocks _______________________

2. The uppermost layer of the soil _______________________
3. Settling of soil at the bottom of rivers _______________________

4. Farming on hill slopes _______________________

5. Planting trees in large numbers _______________________

Brush Up Your Learning
Brush Up Your Learning

A. Define the following in one line :

1. Topsoil 2. Soil conservation 3. Deforestation

4. Weathering 5. Soil erosion
B. Answer the following questions :

1. Name the different layers of soil.

2. What is weathering of rocks? How do rocks break and wear away?
3. How is soil polluted?

4. What is soil conservation? In what ways can soil be conserved?

5. What is soil erosion? Name the factors that cause soil erosion.

One Among All Multiple Choice Questions (MCQs)
One Among All Multiple Choice Questions (MCQs)

Tick ( ) the correct option : ü

1. The removal of the topsoil by water or wind is called _____________ .

(a) soil erosion (b) terrace farming
(c) soil conservation (d) silting

2. Which statement is not true?

(a) Deforestation is the major cause of soil erosion.
(b) Soil erosion does not cause water pollution.

(c) Soil erosion reduces soil fertility.

(d) Planting trees or afforestation is an effective method to prevent soil
erosion.

3. Soil erosion can be controlled by _____________ .

(a) keeping the land barren (b) overgrazing
(c) dumping the waste material (d) growing grass

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