Thermal Expansion and Contraction

Thermal Expansion and Contraction

by Rend Qandeel

What is Thermal Expansion and Contraction?

​When the temperature of a material heats up, it expands. Expands means it gets a little bigger. This happens because the particles move faster and spread out. So, the material gets slightly bigger. When a material cools down the opposite happens. It gets slightly smaller. Getting smaller is called contraction.

Multiple Choice

What is a rule when comparing two different temperature?

• They should both be the same temperature

• One should be a gas the other should be a liqui

• We should use the same temperature scale

• They should be the same mass

Fill in the Blanks

Poll

After studying for tomorrows exam, how ready are you?

• I’m super confident

• Expecting to get a high mark

• I don’t know

• We have an exam tomorrow?????