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प्रश्न
Name the SI unit of heat.
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उत्तर
Joule is the SI unit of heat.
संबंधित प्रश्न
Match the following
| Column A | Column B |
| 1. mercury | 1. insulator |
| 2. wood | 2. water from 0°C to 4°C |
| 3. Aluminum | 3.absorbs |
| 4. contracts | 4.conductor |
| 5.black surface | 5. Thermometer |
Name the three modes of transfer of heat.
Name the mode of transfer of heat in the following :
(a) solid,
(b) liquid,
(c) gas
(d) vacuum
Define one kilo-calorie of heat.
While deciding the unit for heat, which temperature interval is chosen? Why?
What will absorb heat?
Steel spoon
Find the odd one out and give its explanation.
Which temperature segment is chosen when determining the unit of heat? Why?
We feel the heat on our body when the ______ shines.
______ is a form of energy.
Analogy:
Movement of molecules:: Heat.
Heat energy:: ______.
To keep her soup warm Paheli wrapped the container in which it was kept with a woollen cloth. Can she apply the same method to keep a glass of cold drink cool? Give reason for your answer.
Observe the picture given in figure. Water is being boiled in a pan of wide base.
- Which position P or T will feel warmer?
- Fill up the boxes P and T to indicate the mode of flow of heat to the hand.
The SI unit of heat energy is ______.
Match the following
| 1. | Heat | a. | Good absorber |
| 2. | Temperature | b. | Form of energy |
| 3. | Black surface | c. | Insulators |
| 4. | Rubber, cork | d. | The measure of hotness or coldness |
Assertion: Small gaps left between railway lines.
Reason: It allows for the contraction of rails during summer.
In which of the following, chemical energy is converted into heat energy?
Warm air is ______.
