5.3

Cards (6)

What is thermal expansion
When the volume of something increases when it is heated
What stages if matter expand
Solids and liquids
How does thermal expansion occur
When something is heated, it's particles speed up.
Their vibrations take more space and as a result they expand
What is a bimetal strip
A strip of two different metals
Bimetal strips are used...
As thermostats.
Two different metals are bonded together, when temperature changes; one expands and the other contracts causing the strip to bend.
What is contraction
When particles slow down and move closer together