Question

I. Fill in the blanks:

a. Heat always travels from a _____ body to a _____ body.

b. The degree of hotness or coldness of a body is called _______.

c. ______, _____ and ________ are poor conductors of heat.

d. Three modes of transfer of heat are_____, _____ and __________.

e. In fluids, heat transfer takes place primarily due to

a. Conduction b. Convection c. Radiation d. None

f. Which one of these is a good conductor of heat?

a. Wood b. Straw c. Rubber d. Copper

g. Which of these is a bad conductor of heat?

a. Wool b. Gold c. Copper d. aluminium.

II. Name the mode of heat transfer in each of the following case :

a. A spoon kept in a hot cup becomes warm

b. Heat energy reaching us from the sun

c. In a vessel of boiling water

​

Answer 1

lower temperature to higher temperature

Explanation:

Heat always travels from a body at lower temperature to higher temperature...hope it helps

Answer 2

Explanation:

1

a higher, lower

b temperature

c plastic, rubber and baklite

d radiation, conduction and convection

e conduction

f Copper

g wood

2

a convection

b radiation

c conduction

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