This experiment not only explains how your body uses oxygen, but it is also an experiment in air pressure circles – bonus! You will be putting a dime in a tart pan that has a bit of water in it. Then you will put a lit candle next to the dime and put a glass over the candle with the glass’s edge on the dime. Once all of the air inside the glass is used up by the candle, the dime will be easy to pick up without even getting your fingers wet! Ready to give it a try?
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Unless the room is completely vacuum sealed, air (and therefor oxygen) will still seep into the room. Even in a room that is air tight, the more imminent danger would be carbon dioxide poisoning. That would occur long before oxygen could be depleted enough to reach critical levels.
Why is it that in a room that is not near a door that leads to the outside, and in which people come and go and breathe, there is still oxygen in that room every time someone takes a breath? How long would it be until the oxygen runs out?
cool!
It’s kind of an old fashioned term to say a “book of matches”, so I’ll fix it… 🙂
Hi!. I think you meant a box of matches under ‘Here’s what you need’.
The water makes for a very slippery surface with low friction, so there’s more of a chance for that candle to slide. Think of how easy it is to slide on ice when there’s a layer of water on top of it.
Why did the candle move across the water inside the glass as it burned out?