What is thermal expansion/contraction?

Thermal expansion is expansion of a material due to thermal effects. An example of such would be heating a metal plate. The metal plate increases slightly in size, and the increases are usually proportional to the temperature increase.

Δ L = α_E

Δ L is the length the metal expands by

α is the thermal expansion coefficient.

Thermal contraction would be the opposite of expansion. As temperature goes down, the length/size of the object usually contracts and gets smaller. The equation used is the same is one above.

There are tables for α that give you expansion coefficients. There are also expansion coefficients for volume and surface area.

Thermal Expansion Definition

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RE:

What is thermal expansion/contraction?

What is the definition of thermal expansion and thermal contraction?

Thermal Expansion:

is an increase in a material's volume when its temperature increases.

Thermal Contraction:

is a decrease in a material's volume when its temperature decrease.

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Just plug it the temp change, then use trig.

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