Question

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D. Answer the following questions in brief.
1.
In which direction does the transfer of heat normally take place?




2.
What is the cause of heat generation in the following situations:
(a) We apply brakes on our fast moving car.
(b) People often jump up and down to feel warmer in cold weather.
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3.
State two types of physical changes that may take place when a substance is
heated.
4.
In what way(s) does a clinical thermometer differ from an ordinary thermometer?
5. State the mode/different modes, of heat transfer, in the following situations.
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(a) A paper cup, full of hot soup, lying on a table.
(b) Cooking vegetables in a pan.
(c) Melting of a chocolate bar, in the school bag, on a hot day.
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(d) Cooking food in a microwave oven.
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6.
What is meant by sea breeze? When does it occur?​

Answer 1

Answer:

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