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Question
Demonstrate the formation of convective currents.
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Solution
Convection currents are set up in the air. To demonstrate their formation, let us consider the following experiment:
Place a candle in a beaker and light it. Now, light an incense stick and bring it to the edge of the mouth of the beaker. Observe the direction of flow of smoke. Now, in a similar way, observe the direction of flow of smoke by placing the stick a little above the candle and then at other regions above the beaker.
You will observe that the direction of flow of smoke is different in all the situations. The patterns of flow of smoke reveal the directions in which hot and cold air move.
RELATED QUESTIONS
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 |
Write True or False.
CFCs and BFCs protect the ozone layer.
What is responsible for causing a hole in the ozone layer?
What is known as troposphere?
All types of clouds are found in the ______.
All weather changes occur in the Troposphere.
The part of atmosphere which is consisted of variable gases with uneven composition is called ______.
Why is Troposphere called as weather making layer?
______ found above the mesosphere.
Why mountain climbers carry oxygen while climbing?
