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This simple, yet surprising physics demonstration challenges preconceptions about forces, and demonstrates the strength of atmospheric pressure.

In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.

In this demonstration, learners observe the effects of air pressure. They will watch as marshmallows inside a bottle expand as a vacuum pump removes air from the bottle.

In this activity, learners observe what would happen to their bodies if they went to outer space without a space suit.

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.

In this quick and easy activity and/or demonstration, learners illustrate the effect of the weight of air over our heads.

"Molecules in Motion" explores how materials behave and change in a vacuum.

In this quick and easy activity and/or demonstration, learners use two empty soda cans to illustrate Bernoulli's principle.

In this meteorology activity, learners build weather vanes using straws, paperclips, and cardstock.

In this meteorology activity, learners construct simple devices to measure the direction and speed of wind.