Air Takes Space #2
This demonstration, will show students that air takes space.
a piece of paper towel
a sink full of water
Stuff the piece of paper towel in the bottom of the glass so that it will not fall out when you flip it upside down.
Ask students whether or not they think you can plunge the glass all they way into the sink of water without getting the paper towel wet?
Hold the glass upside down and plunge it into the sink.
Hold the glass under water for about 10 second and then slowly and steadily lift the glass up, making sure not to tilt it at all.
Pull out the dry piece of paper towel and show it to the students.
Have a class discussion on some possible reasons of why the piece of paper towel stayed dry.
(The air filled the glass up and that is why water couldn't get in it.)