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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
Define the term heat.
Fill in the blank and rewrite the sentence.
If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ................. .
What will absorb heat?
Steel spoon
What will absorb heat?
Wooden board
What will absorb heat?
Plastic plate
Write scientific reason.
In the cold regions, snow falls in winter.
The unit of heat and temperature are the same.
If you apply some heat energy to a substance, which of the following can take place in it?
Ice is kept in a double-walled container. Why?
______ is a form of energy.
The sun gives us light and heat.
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 water in the black can becomes ______ than that in a white can after exposure to the sun.
In summer, we prefer light – colored clothes and in winter we usually wear dark – colored clothes.
Arrange the following in order of decreasing the expansion of heating: Steel, milk, air.
Heat gained by a body depends upon which factors?
