EASY
6th Tamil Nadu Board
IMPORTANT
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The SI unit of temperature is (celsius/kelvin).

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Important Questions on Heat
EASY
6th Tamil Nadu Board
IMPORTANT

EASY
6th Tamil Nadu Board
IMPORTANT
Heat is a kind of energy that flows from a hot body to a cold body.

EASY
6th Tamil Nadu Board
IMPORTANT
True or false. If false, give the correct statement.
Steam is formed when heat is released from water.

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6th Tamil Nadu Board
IMPORTANT
True or false. If false, give the correct statement.
Thermal expansion is always a nuisance.

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6th Tamil Nadu Board
IMPORTANT
Borosilicate glass does not expand much on being heated.

EASY
6th Tamil Nadu Board
IMPORTANT
The unit of heat and temperature are the same.

MEDIUM
6th Tamil Nadu Board
IMPORTANT
Give reasons for the following.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.

EASY
6th Tamil Nadu Board
IMPORTANT
Give reasons for the following.
The electric wires which sag in summer become straight in winter.