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In this activity, learners use cheap, thin plastic garbage bags to quickly build a solar hot air balloon. In doing so, learners will explore why hot air rises.

In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.

The demonstration/experiment provides quick proof that air has mass.

In this physics activity, learners will explore buoyancy.

This demonstration/activity helps learners understand why higher elevations are not always warm simply because "hot air rises." Learners use a tire pump to increase the pressure and temperature inside

In this physics activity (page 3 of the PDF), learners will see firsthand that air takes up space and has pressure by attempting to inflate a balloon inside of a bottle.

In this activity, learners explore Charles' Law in a syringe.

This lesson challenges groups of learners to design and construct a wind generator with the most electrical output.

In this activity, learners explore Boyle's Law and discover that water will boil at room temperature if its pressure is lowered.

Learners develop an understanding of air pressure in two different activities.

Learners measure a bottle full of air, and then use a vacuum pump to remove the air. When they re-weigh the bottle, learners find the mass is about 0.8g less.