On Monday we poured some lemonade into some jars. Then we dropped some raisins into the lemonade. They went straight to the bottom. We watched and waited. We didn't have to wait long before the raisins started to dance.
We decided the bubbles in the lemonade attached themselves to the raisins which made them float to the top. Then the bubbles popped and the raisins went back down to the bottom. The raisins kept dancing for about two hours.