CBSE Class 4 Social Studies Assignment Set F

1. Fill in the blanks:

1. India has a long coastline of about ____________ kms.

2. The Eastern and Western coastal plains meet at _______________

3. The Western coastal plain lies between the Western Ghats and the_________

4. Lagoons are found mainly at the _______________ coast.

5. The Andaman and Nicobar Islands are located in the ___________

6. The popular ______________ races are held during Onam.

2. With which states are the following associated?

1. Gandhiji’s Sabarmati Ashram : ____________________________

2. Beautiful beaches and churches : __________________________

3. Bombay High : _________________________________________

4. The temples of Khajuraho : _______________________________

3. Give one word answer:

1. I am the most literate state of India.________________________

2. I am called the milk capital of India. ________________________

3. A jail turned into national monument. ______________________

4. I am called God’s own country. ____________________________

5. The southernmost tip of India. _____________________________

A. New words (Write these words twice):-
1. Alluvial Soil
2. Fertilizers
3. Fertile
4. Laterite Soil
5. Soil Erosion
6. Barren
7. Over Grazing
8. Conservation
9. Prevent
10. Irrigation
11. Minerals

B. Define the terms:-

Manure:- Waste matter of animals that is mixed with the soil
Lava rocks:- Rocks that are formed when hot molten rocks called lava , which comes out from
inside the Earth, cools and hardens on the Earth’s surface.
Humus:- Fertilizer formed when dead leaves and plants remain under the soil for a long time.

C. answer these questions:-

Q1. How is soil formed?
Ans- Soil is formed when large rocks break into smaller pieces. These pieces are further broken down into sand and silt.

Q2. What are the different types of soil found in India? Write two crops grown on each type of soil.
Ans- The different types of soil found in India and two crops grown on each type of soil are-
1. Alluvial soil-- Rice and Wheat.
2. Black soil – Cotton and Sugarcane.
3. Red soil – Rice and Pulses
4. Laterite soil—Tea and Rubber
5. Mountain Soil—Wheat and Maize
6. Desert Soil—Millets and Pulses.

Q3. Why is black soil also called black lava soil?
Ans- Black soil is black in colour. It has been formed from lava rocks. That is why it is also called black lava soil.

Q4. In which states is desert soil found?
Ans- Desert soil is found in Rajasthan and Gujarat.

Q5. How can we prevent soil erosion?
Ans- We can prevent soil erosion by following steps.
1. Not cutting tree.
2. Planting more tress.
3. Not keeping the fields barren
4. Stopping overgrazing
5. Use manure or natural fertilizers instead of artificial fertilizers .