Activity 1. "Who Am I?"
Direction: Identify what is described in each of the following statements. Choose your answers from
the word bank below.

Atmosphere, Troposphere,
Ozone layer, Ionosphere,
Stratosphere, Mesosphere, Thermosphere, Exosphere,
Greenhouse effect,
Global warming, Nitrogen, Carbon dioxide

1. Thick blanket of gases that surrounds the earth.

2. Most abundant gas
in the earth's atmosphere.

3. Layer of the atmosphere closest to earth's surface, where weather occurs.

4. Layer of the atmosphere where the ozone layer is found.

5. Earth's protective layer against UV rays, found in the stratosphere.

6. The coldest layer of the atmosphere.

7. Layer of the atmosphere where the ionosphere is found.

8. Layer of the atmosphere which merges into the space.

9. The natural process by which the Earth's atmosphere warms up.

10. The increasing temperature phenomenon due to increased amounts
of greenhouse gases in the atmosphere.​