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प्रश्न
Write true or false for a given statement.
Land and sea breezes are convection currents of cold and warm air.
पर्याय
True
False
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उत्तर
True.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
A mercury thermometer makes use of the property of the expansion of liquids on heating.
Fill in the blank
In a thermometer, the commonly used liquid is _______
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 ?
State which expands more, when heated to the same temperature : solid, liquid or gas ?
What are the good and bad conductors of heat ? Give two examples of each.
In summer, ice is kept wrapped in a gunny bag. Explain the reason.
Why are quilts filled with fluffy cotton?
What are the effects of heat?
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 |
Mention the factors affecting the flow of heat.
