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प्रश्न
Why do we wear woolen clothes in winter?
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उत्तर
We wear woolen clothes in winter because woolen clothes have tiny pores and air is trapped in these pores and being a bad conductor, the trapped air obstructs the flow of body heat to the surroundings.
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संबंधित प्रश्न
Fill in the blank
The temperature of a normal human body is ________.
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Two bodies at different temperatures are placed in contact. State the direction in which the heat will flow.
Why does a piece of ice when touched with a hand, appear cool? Explain.
Two bodies at different temperatures are placed in contact with each other. State the direction in which heat flows.
What causes a change in the temperature of a body?
State three main characteristics of a thermometric substance.
Explain the following:
It is cool in the shade, when it is hot outside.
What is temperature?
Paheli and Boojho measured their body temperature. Paheli found her’s to be 98.6°F and Boojho recorded 37°C. Which of the following statement is true?
