When its air is warmed, will a pop bottle pop its top?
Things Required:
A plastic 2-litre soda bottle with cap
Directions:
Wet the cap of the soda bottle and place it upside down on the top of the container. Gently place your hands around the bottle. Hold it, but do not squeeze it.
This Is What Happens:
The cap jumps or pops off the bottle.
Science Behind It:
When you place your hands around the bottle, you warm the air inside it and the molecules of warm air expand and try to escape. The wet cap at first acts as a seal and keeps the air in place, but eventually some of it manages to escape and pushes the lid to the side or off the top of the bottle. If the cap doesn’t fall and you keep your hands placed around the bottle, you can continue to make it jump.
