Discovery Science – Step 1 – Energy and Forces
In this experiment, performed by the Junior room, the children learned that the raisins were heavier than the drink and therefore sank to the bottom. They discovered that at the bottom of the fizzy drink, the raisins collected bubbles of carbon dioxide, resulting in the ‘raisins + bubbles’ becoming lighter than the drink. Consequently, they rose to the surface. When the raisins reached the surface, the gas bubbles burst and the raisins sank to the bottom, only to collect gas bubbles once again.