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Physics Over the Sink: Water Glass Magic
Source Institutions
In this simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-147.png?itok=pEwd6l7U)
Crunch Time
Source Institutions
In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-599.png?itok=aHowFXxi)
Does Air Weigh Anything?
Source Institutions
The demonstration/experiment provides quick proof that air has mass.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-148.jpg?itok=9OGfTe0H)
Go with the Flow
Source Institutions
In this quick and easy activity and/or demonstration, learners use two empty soda cans to illustrate Bernoulli's principle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-592.gif?itok=BSxF4lpY)
What is a “Convection Cell”?
Source Institutions
In this demonstration, learners can observe a number of small convection cells generated from a mixture of aluminum powder and silicon oil on a hot plate.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-232.jpg?itok=XFmttdNW)
Can Crushers
Source Institutions
In this activity, learners conduct an experiment by heating an aluminum can filled with water to investigate air pressure.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-304.png?itok=6Px2WRcD)
Glider
Source Institutions
In this activity, learners construct paper airplanes that twist and turn.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-385.jpg?itok=DIsas6FD)
Model Eardrum
Source Institutions
In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-150.jpg?itok=8n6a8Z65)
Heavy Air
Source Institutions
In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-376.jpg?itok=kagah0_r)
Air Pressure
Source Institutions
In this experiment, learners use a blow dryer and water bottle to observe and record changes in air pressure caused by changes in temperature.