Thermal Expansion Magnitude of Expansion of Solids, Liquids and Gases Examples of Expansion Summary

Simulation

Thermal Expansion When molecules are heated they move far apart from each other This causes the material to expand Expansion Increase in size of a material due to added heat Contraction Decrease in size of a material when heat is removed

Let us look at 3 videos on the example of expansion and contraction

Applications of Thermal Expansion Bimetallic strip as thermometer

Applications of Thermal Expansion Road expansion gaps Liquid Expansion as thermometer

Applications of Thermal Expansion Tyre Fitting Opening a Jar

Thermal Expansion All materials expand Solids have linear expansion Varies among materials Liquids and Gases have volume expansion

Thermal Expansion Solid expansion< liquids< gases When a material changes from solid to liquid, volume does not change much Density is almost the same When a liquid changes to gas, the volume expansion is about 1000 times more Density is divided by 1000