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प्रश्न
Define one calorie.
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उत्तर
One calorie is the amount of heat energy required to raise the temperature of 1 gram of water through 1°C.
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 |
Define the term heat.
What will absorb heat?
Water
What will absorb heat?
Wax
What will absorb heat?
Glass
We can absorb heat by rubbing two surfaces of some substances.
In the past, people used to rub two wooden pieces together to light fire.
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.
The SI unit of heat energy is ______.
Black color is a ______ absorber of heat.
In summer, we prefer light – colored clothes and in winter we usually wear dark – colored clothes.
What is heat energy?
Which of the following is true?
Heat gained by a body depends upon which factors?
