Environmental Studies Worksheet-9

Environmental Studies Worksheet-9

1. Which of the following is a major source of water pollution?

A. Household waste                    

B. Industrial waste from factories and refineries

C. Fish in the water

D. Ultraviolet rays

2. What happens to the soft part of an animal or plant during fossil making process?

A. It is hardened.                          B. It is imprinted.

C. It is decayed.                            D. It is softened.

3. Which of these does not belong to the group formed by the others?

A. Cement         B. Brick              C. Iron                D. Straw

4. Petrol and diesel are made from refining of _____.

A. Rocks             B. Petroleum     C. Herbs                     D. Subsoil

5. The kind of soil that does not allow the free circulation of air in it is ___.

A. Loamy soil                                B. Sandy soil

C. Humus                                       D. Clayey soil

6. What is the solvent in the above experiment?

A. Salt                                             B. Water

C. Salty Water                               D. Salt and Water

7. Now a days, many _____ travel at a supersonic speed.

A. Trains            B. Planes            C. Ships              D. Two-wheelers.

8. What must have happened to the water in the tumbler X in 10 minutes before it reached the state in the tumbler Y?

A. The tumbler was placed in a refrigerator

B. The tumbler was heated on a stove

C. Ice tumbler were added to the water

D. The tumbler was left untouched.

9. How much of the earth's surface is covered with water?

A. 1/2                  B. 2/3                 C. 3/4                 D. 3/5

10. Which type of soil absorbs the water best?

A. Clay                B. Sand              C. Loam             D. Humus

Answer Key:

(1)–B; (2)–C; (3)–D; (4)–B; (5)–D; (6)–B; (7)–B; (8)–B; (9)–C; (10)–C