Sunday, August 8, 2010

Diving, Dancing Raisins

Materials
Raisins
Lemonade
A glass jar

First we half filled a jar with lemonade, and then we added a handful of raisins. We then waited to see what happened. 
The raisins danced around in the jar; floating up to the top and then diving down to the bottom again. The reason the raisins floated to the top of the jar was because the bubbles in the lemonade, stuck to the sides of the raisins. This made the raisins more buoyant. If things are buoyant they are able to float more easily.
Once the raisin coated bubbles reached the surface of the lemonade, the bubbles popped, and the raisins sunk down to the bottom once more.

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