Floating and sinking with Primary 4/5

Primary 4/5 became scientists for the afternoon.  We were experimenting with an orange and a grape to see if they would float or sink.

A lot of us thought the orange would sink because it was heavier than the grape.  Imagine our surprise when our experiment showed it was the other way round.

Mrs Haigh (Emma’s mum) spoke to us about density and why the orange floats even though it’s heavier.  Did you know that the orange peel contains little air pockets that make it less dense than water?  This is why it floats.

We tested this theory by peeling the orange…it sank!

 


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