Q2 of 16 Page 45

Give any two examples each of conductors and insulators of heat.

Conductors are the materials which can allow heat to pass through them whereas insulators doesn’t allow heat to pass through them. The examples of conductors are: Aluminum, Iron and Copper. The examples of insulators are wood and plastic.


More from this chapter

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1

State few similarities and differences between the laboratory thermometer and the clinical thermometer.

 3

Fill in the blanks:

a. The hotness of an object is determined by its _____.


b. Temperature of boiling water cannot be measured by _______ thermometer.


c. Temperature is measured in degree ______.


d. No medium is required for transfer of heat by the process of _______.


e. A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of _______.


f. Clothes of ______ colours absorb heat better than clothes of light colours.

 4

Match the following:





















i. Land breeze blows during(a) summer
ii. Sea breeze blows during(b) winter
iii. Dark coloured clothes are preferred during(c) day
iv. Light coloured clothes are preferred during.(d) night

 

 5

Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing?