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प्रश्न
The layer of air around the earth is known as ______.
उत्तर
The layer of air around the earth is known as atmosphere.
APPEARS IN
संबंधित प्रश्न
Give two uses of the following component present in air:
water vapour
Mention five causes of air pollution.
State four steps to be taken to control air pollution.
Fill in the blank
Although we cannot see air, we can ___it.
Fill in the blank
Polluted air is harmful to ____.
Describe a simple experiment with the help of a diagram to show that Air has mass
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
Match the items of Column I with the items of Column II
| Column-I | Column-ll | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of airflow |
| (e) | Wind | (v) | Prevent dust particles |
