MEDIUM
7th ICSE
IMPORTANT
Earn 100

Draw a neat labelled diagram of a laboratory thermometer.

Important Questions on Heat

EASY
7th ICSE
IMPORTANT
Write down the body temperature of a healthy person.
EASY
7th ICSE
IMPORTANT
What do you understand by thermal expansion of a substance ?
EASY
7th ICSE
IMPORTANT
Name two substances which expand on heating.
MEDIUM
7th ICSE
IMPORTANT
Why do telephone wires sag in summer ?
EASY
7th ICSE
IMPORTANT
Iron rims are heated before they are fixed on the wooden wheels. Explain the reason.
MEDIUM
7th ICSE
IMPORTANT
Why are gaps left between successive rails on a railway track ?
MEDIUM
7th ICSE
IMPORTANT
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
MEDIUM
7th ICSE
IMPORTANT
Why is a cement floor laid in small pieces with gaps in between?