What is thermal expansion ?

What is meant by thermal expansion?

Usually the thermal expansion of a liquid is greater than the thermal expansion of an equal volume of a solid'. State whether the statement is true or false.

Usually the thermal expansion of a liquid is greater than the thermal expansion of an equal volume of a gas'. State whether the statement is true or false.

What do you understand by thermal expansion of a substance ?

What do you mean by thermal expansion? Define three kinds of thermal expansion.

What do you understand by thermal expansion ofa substance?

Explain thermal expansion with suitable examples.