Environmental Science Worksheet-3

Environmental Science Worksheet-3

1. Approximately how much nitrogen is present in our atmosphere?

A. 21%                B. 78%                C. 55%                D. 99%

2. What causes tides in the ocean?

A. Gravitational force of the Moon and the Sun pulls the ocean water

B. Gravitational force of the Stars pulls the ocean water

C. Earth's magnetic field causes water turbulence

D. Solar winds causes water turbulence

3. Which of the following is not a natural event?

A. Earthquake                               B. Nuclear explosion

C. Volcano                                      D. Thunder and Lightning

4. Which of the following is a source of water on the earth?

A. Oceans          B. Rivers            C. Glaciers         D. All of the above

5. Which of the following is not a natural resource on the earth?

A. Air                  B. Water            C. Soil                 D. Plastic

6. Which of the following is a layer of earth's surface?

A. Topsoil          B. Subsoil          C. Bedrock        D. All of the above    

7. Which of the following is not a major classification of rocks?

A. Sedimentary                             B. Rusty

C. Igneous                                      D. Metamorphic

8. What causes the ocean tides?

A. The pull of gravity between the Earth, the Moon and the Sun.

B. The pull of gravity between the Moon and the Sun.

C. Surface winds

D. Deep cold water

9. What is the difference between the snow and sleet?

A. Snow is in the form of powder, and sleet falls as frozen cubes.

B. Snow is in the form of crystals, and sleet falls as frozen raindrops.

C. Snow is white and sleet is blue.

D. Snow is blue and sleet is white.

10. Why do we need to predict weather?

A. So that farmers can plan their work.

B. So that we can plan our activities.

C. So that we can be safe from bad weather.

D. All of the above.

Answer Key:

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