Take a look at some photos of Senior Infants doing a science experiment!

We put some raisins into a glass of water to see what would happen…they sank to the bottom and didn’t move again.

Next we put some raisins into a glass of fizzy drink and waited….the raisins started to dance! They moved up and down in the fizzy drink.

Why? Raisins are heavier than the drink so they sank to the bottom. At the bottom of the fizzy drink they collected bubbles of carbon dioxide and then were lighter than the drink so they rose to the surface.
When they reached the surface the gas bubbles burst and the raisins sank; then they collected more gas bubbles and rose again, etc.