Simple experiments can show how thermal expansion works in fun and interesting ways. Here are a couple of easy examples:

1. Ball and Ring Experiment:

   • Grab a metal ball and a ring.
   • When the ball is at room temperature, it can easily pass through the ring.
   • But when you heat the ball, it gets bigger and can’t fit through the ring anymore.
   • This shows how things can change size when they get hot.

2. Liquid Expansion:

   • Take a clear glass and fill it with liquid, like water.
   • Make a mark on the glass at the water level.
   • Now, heat the water. You will see the water rise above the mark.
   • This happens because liquids expand when they are heated.

These fun experiments help show thermal expansion clearly. They also let students practice their data analysis skills by watching and measuring the changes.