Study of Weather | Chapter 3 | Answer Keys | Questions and Answers

Answer the questions in about 20-30 words:

1. What is weather?

Answer: Weather is the day-to-day or short-term state of the atmosphere at any time. It may be hot or cold, wet or dry, or clean or cloudy; all these weather phenomena occur in the lower part of the atmosphere.

2. Name the instrument used for measuring atmospheric pressure?

Answer: Barometer is the instrument used for measuring atmospheric pressure.

3. How are winds named? Give Example.

Answer: The winds get their names depending on the direction from which they are blowing.
Example: If winds are blowing from the North to South then they are called the North winds.

4. What are local winds?

Answer: Local winds occur over a much smaller region and are related to the topographical features and local pressure conditions of that particular place.

5. Define condensation. Explain any two forms of condensation.

Answer: The process of changing gas to a liquid is called condensation. In other words condensation is the process by which water vapour in the air changes into water. Two forms of condensation are explained below.

i) Dew:- Small droplets of water that form on plants, leaves etc. during the night is called dew. When moist air comes in contact with cold surface the water vapour condenses into water droplets which are observed in the early morning.

ii) Clouds:- Clouds are the most important form of condensation. After moist air ascends it begins to cool and saturate. This condensation starts the cloud forming process.





See Also: Differentiate between the following: