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प्रश्न
What will absorb heat?
Wooden board
विकल्प
Will absorb heat
Will not absorb heat
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उत्तर
Will not absorb heat
Explanation:
Wood is a non-conductor material, which is not a good absorber of heat. On the contrary, it acts as a heat trap.
Wooden chakla absorbs heat very slowly because:
- Wood is a poor conductor of heat.
- It does not transfer heat as quickly as metals such as copper or iron.
- Wood has small air pores inside it, which prevent the flow of heat.
संबंधित प्रश्न
What will absorb heat?
Glass vessel
Find the odd one out and give its explanation.
______ is a form of energy.
In the past, people used to rub two wooden pieces together to light fire.
When an electric current is passing through the conductor ______ energy is produced.
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.
Assertion: Small gaps left between railway lines.
Reason: It allows for the contraction of rails during summer.
On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?
