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

2. Simulation

3. 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

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

5. Applications of Thermal Expansion
Bimetallic strip as thermometer

6. Applications of Thermal Expansion
Road expansion gaps
Liquid Expansion as thermometer

7. Applications of Thermal Expansion
Tyre Fitting
Opening a Jar

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

9. 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