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In this activity, learners hook up a hair to a lever system and create a hair hygrometer to measure changes in humidity.

In this quick activity, learners observe how the added sugar in a can of soda affects its density and thus, its ability to float in water.

Learners build a simple aneroid barometer to learn about changes in barometric pressure and weather forecasting. They observe their barometer and record data over a period of days.

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