YouTube-Expansion and Contraction

What is thermal expansion?

• A process in which body contracts when heated

• A process in which body expands when heated

• A process in which body remains unchanged when heated

• A process in which body changes color when heated

Which states of matter does thermal expansion occur in?

• Solids only

• Liquids only

• Gases only

• Solids, liquids, and gases

What happens to the molecules of a solid when it is heated?

• They contract

• They remain unchanged

• They vibrate and take up more space

• They evaporate

What is an example of thermal expansion in solids?

• A tight jar lid becoming loose when placed under hot water

• A thermometer showing an increase in mercury level when heated

• Gas expanding in a car's fuel tank in the summer

• A solid changing color when heated

How do liquid particles move when heated compared to solid particles?

• Liquid particles move less than solid particles

• Liquid particles move the same as solid particles

• Liquid particles move further than solid particles

• Liquid particles evaporate when heated

Why is it more likely to run out of gas in the summer than in the winter?

• Gas particles expand more in the summer

• Gas particles expand more in the winter

• Gas particles do not expand

• Gas particles evaporate in the summer