Pollution of Air and Water Worksheet-4

Pollution of Air and Water Worksheet-4

1. Which of the following is a fossil fuel?

1 – Tar

2 – Coal

3 – Petroleum

(a) I only                                         (b) I and II only

(c) II and III only                          (d) I, II and III

2. Carbon particles and smoke from factories:

(a) increase the rate of respiration in plants

(b) decrease the rate of photosynthesis in plants

(c) increase the absorption of carbon dioxide by plants

(d) decrease the rate of transpiration in plants

3. The ozone layer is important because it:

(a) is used by living organisms for respiration.

(b) increases the temperature of the earth.

(c) reduces the amount of ultraviolet rays reaching the earth.

(d) reflects the heat from the earth back into the atmosphere.

4. The gases released from vehicle exhausts are:

I – Carbon monoxide

II – Sulphur  dioxide

III – Oxide of nitrogen

(a) I and II only                             (b) I and III only

(c) II and III only                          (d) I, II and III

5. Which of the following gases can result in the formation of acid rain?

(a) Ozone                                        (b) Carbon monoxide

(c) Sulphur dioxide                      (d) Chlorofluorocarbon

6. Exposure to too much ultraviolet rays can affect the:

(a) skeletal system                       (b) immune system

(c) nervous system                       (d) digestive system

7. When heat is reflected from the Earth's surface and trapped in the atmosphere, this phenomenon is referred to as:

(a) global warming                      (b) ozone depletion

(c) the greenhouse effect            (d) thermal pollution

8. The leaching of chemical fertilizers into rivers and ponds cause:

(a) the rapid growth of algae

(b) air pollution

(c) an increase in the oxygen concentration of the water

(d) an increase in number of aquatic organisms

9. Environmental pollution can be controlled by:

(a) spraying insecticides and pesticides

(b) the open burning of tree stumps

(c) treating factory wastes before disposing them

(d) disposing hot water from power stations into the sea

10. Materials that can be recycled include:

I – Old newspapers

II – Aluminum tin cans

III – Plastic pails

(a) I only                                         (b) I and II only

(c) I and III only                           (d) I, II and III

Answer Key:

(1)-(c); (2)-(b); (3)-(c); (4)-(d); (5)-(c); (6)-(b); (7)-(c); (8)-(a); (9)-(c); (10)-(d)