Just in time for fall festivities, we're making our own fog machine.
Start by cutting a small hole in the bottom of a plastic, disposable cup. Along with some safety goggles, gloves and adult supervision, place some dry ice in the cup and then seal the open top with saran wrap and a rubber band.
By simply tapping on the saran wrap, CO2 gas is released through the hole in the bottom of the cup, creating smoke rings. Check it out in the "Science Break" segment above.