Question

II. FILL IN THE BLANKS

6.
is increase in volume of a substance on heating
7.
does not required any medium for transfer of heat .
8. When we speak loudly in a hilly area, we hear the of our sound.
10. The mode of transfer of heat from Sun to Earth is by​

Answer 1

Answer:

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Answer 2

Answer:

6. Expansion

7. Radiation

8. If we shout or clap near a suitable reflecting object such as a tall building or a mountain, we will hear the same sound again a little later. This sound which we hear is called an echo.

10.Radiation

Explanation:

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