Question

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Answer 1

Answer:

3. Conduction

4. Mercury

5. Hot air , Cool fresh air

6. Dark , Light

7. Radiation

Explanation:

3. Conduction of heat requires the object to be in contact.

4. Mercury is an example of liquid which is a good conductor.

5. Ventilators use Hot air , Cool fresh air to cool a room.

6. Objects that are Dark in colour absorb more heat than objects that are Light in colour.

7. In a thermos flask , the silvering of the wall prevents loss of heat by Radiation.

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Answer 2

Answer:

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