Saturday, 26 April 2014

Does air weigh anything?

Rose made an interesting comment this week
"it's full of air so it's not heavy - it doesn't weigh anything"

I knew we'd discussed the weight of air vs helium previously but thought I should come up with a quick recap for Rose.

I made a hanging scale from a lollipop stick, some string and a nail. Next took two balloons and blew on of them up - we stuck a balloon to each end of the scale and observed.

She now knows that while air may be light it does at least weigh something : )

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