Monday, September 19, 2011

Floating and Sinking

In Science, we have been looking at floating and sinking. We did 'hands on' experiments that were a lot of fun. Like scientists, we predicted what we thought would happen before conducting the experiments.
We found out that the size of an objects didn't decide wheter that object would float or sink. A ping pong ball and a golf ball are the same size, but one floated and one sank. It was the  weight and density of the object taht determined whether it floated or sank.



We tried floating an egg in tap water, but it sank. When we tried the same experiment with salty water the egg floated. We found that egg white sank when it was a liquid, but floated once we had beaten the egg white.

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