Most grown ups know that even a big heavy old pumpkin will float, but it comes as a surprise to a lot of kids. It is true that a heavy pumpkin seems like it should sink, but in fact they are filled with air, so they don't! My son and I had a great time experimenting with different size and shape pumpkins (I bought a bunch of the little $1 pumpkins at the patch instead of the big $20 variety!!), and then we tried other objects around the house to see if we could find some common reasons that some things float and some things don't. We kept a list of things that float and things that didn't float to help us look for similarities. This is a fun little science experiment, and gets the kids excited and involved. And, it is Halloween themed, so even better:)
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