Page 64 - sst_class_04

Now I Know :

• Soil is the top layer of the Earth's surface formed by the breaking

up of rocks into tiny pieces by the action of sun, wind and water.
• In India, there are six types of soil–alluvial soil, black soil, red soil,

laterite soil, mountain soil and desert soil.

• Minerals are of two types–metallic and non-metallic minerals.
• We need to conserve soil and minerals for our future use.

A. Oral Questions:

1. What is the use of Iron?
2. Name the two types of minerals.

B. Tick (3) the correct option:

1. It is a hard solid materials that form the upper layer of the Earth.
(i) rock (ii) soil (iii) humus

2. It is formed by the breaking down of rocks.

(i) minerals (ii) mining (iii) soil
3. Cotton, millet and sugarcane grow well in:

(i) alluvial (ii) black (iii) red

4. The process of digging minerals is called:

(i) metallic (ii) mining (iii) soil erosion
5. Iron, copper, gold, silver, tin and aluminium are example of:

(i) metal (ii) manure (iii) fertile

C. Fill in the blanks:
1. ___________ is the top layer of the Earth’s surface.

2. ___________ soil is dark in colour.
3. Laterite soil is mainly found in areas of ___________, ___________ and

___________
4. The minerals from which we get metals are called ___________.

5. ___________ found in milk helps us build strong and healthy bones.

64 Social Studies-4