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प्रश्न
What are the effects of heat?
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उत्तर
- Expansion
- Increase in temperature
- Change in state
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संबंधित प्रश्न
Fill in the blank
_________ determines the degree of hotness or coldness of a body.
Fill in the blank
Still air is an __________ of heat.
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
Why is a cement floor laid in small pieces with gaps in between?
One end of a steel girder in a bridge is not fixed, but is kept on roliers. Give the reason.
Name a liquid which is a good conductor of heat.
Why do we use cooking utensils made up of copper.
Why do we prefer to wear white or light coloured clothes in summer and black or dark coloured clothes in winter ?
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
Match the following
| 1. | Solid to liquid | a. | Condensation |
| 2. | Liquid to gas | b. | Deposition |
| 3. | Gas to solid | c. | Melting |
| 4. | Gas to liquid | d. | Vaporization |
