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प्रश्न
______ reflects radio waves.
विकल्प
Exosphere
Ionosphere
Mesosphere
Stratosphere
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उत्तर
Ionosphere reflects radio waves.
Explanation:
Ionosphere is a layer of the thermosphere that contains Ions and free electrons. Radio waves transmitted from earth are reflected back to earth from this layer.
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संबंधित प्रश्न
Name the following:
The layer of atmosphere which contains the ozone layer.
Match the following.
| A | B | ||
| 1. | Troposphere | (i) | Ozone |
| 2. | Stratosphere | (ii) | Ions |
| 3. | Thermosphere | (iii) | Outer Space |
| 4. | Exosphere | (iv) | Lowest Temperature |
| 5. | Mesosphere | (v) | Densest Layer of atmosphere |
State whether the following is true or false.
Communication satellites orbit in thermosphere.
Fill in the blank:
The ozone layer protects us from the _____________ of the sun.
The lowest layer of the atmosphere is ______.
The atmosphere is divided into ___________ layers.
Match the following.
| 1. | Troposphere | Satellite |
| 2. | Stratosphere | Space craft |
| 3. | Exosphere | Ozone layer |
| 4. | Thermosphere | Meteors |
| 5. | Mesosphere | Weather change |
What is Magnetosphere?
______ found above the mesosphere.
The air envelope is thicker near the earth’s surface and we go higher the density and availability of air gradually decreases. Why?
