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Thermal Expansion
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EASY
Earn 100
What happen to the mercury in thermometers when it is subjected to heat?
(a)
It contracts
(b)
It expands
(c)
It cools down
(d)
None of the above
50% students
answered this correctly
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Important Questions on Heat
EASY
Science
>
Physics
>
Heat
>
Thermal Expansion
Which quantities remain fixed in the definition of volume expansion co-efficient of a gas? Name a non-metal, which is a good conductor of heat.
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
Describe an experiment to show that air expands on heating.
EASY
Science
>
Physics
>
Heat
>
Thermal Expansion
The type of thermal expansion that takes place in gases is
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into the water. Explain the reason.
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
What does a bimetallic strip consist of?
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
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 ?
HARD
Science
>
Physics
>
Heat
>
Thermal Expansion
Soft drink bottles are not filled completely. Why?
EASY
Science
>
Physics
>
Heat
>
Thermal Expansion
State which expands more, when heated to the same temperature: solid, liquid or gas?
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
Why are gaps left between successive rails on a railway track ?
EASY
Science
>
Physics
>
Heat
>
Thermal Expansion
What do you understand by thermal expansion of a substance ?
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
Why do telephone wires sag in summer ?
HARD
Science
>
Physics
>
Heat
>
Thermal Expansion
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
EASY
Science
>
Physics
>
Heat
>
Thermal Expansion
Name two substances which expand on heating.
HARD
Science
>
Physics
>
Heat
>
Thermal Expansion
Give reasons for: Small gaps are left between successive rail tracks.
EASY
Science
>
Physics
>
Heat
>
Thermal Expansion
Name a liquid which is a good conductor of heat.
HARD
Science
>
Physics
>
Heat
>
Thermal Expansion
Describe one experiment to show that liquids expand on heating.
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
One end of a steel girder in a bridge is not fixed, but is kept on rollers. Give the reason.
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
Describe an experiment to show that liquids expand on heating.
EASY
Science
>
Physics
>
Heat
>
Thermal Expansion
State one application of thermal expansion of liquids.
MEDIUM
Science
>
Physics
>
Heat
>
Thermal Expansion
Why is a cement floor laid in small pieces with gaps in between?
