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प्रश्न
Why does a piece of ice when touched with hands appear cold?
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उत्तर
We feel cold on touching ice because heat flows from our warm hands to cold ice. Due to this flow of heat from hand to ice, the temperature of our hand falls. This is why we feel cold.
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संबंधित प्रश्न
What is the difference between heat and temperature? What are their units?
Why is a newly made quit warmer than an old one?
Explain the following:
Water is heated generally from below.
Explain the following:
Land becomes warmer than water during the day.
Higher Order Thinking question
Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.
Consider the statement given below and choose the correct option.
Assertion: A system can be converted from one state to another state.
Reason: It takes place when the temperature of the system is constant.
Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour.
Reason: Boiling point of water is 10°C.
Temperature is the average ______ of the molecules of a substance.
