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As a model of acid rain, learners water plants with three different solutions: water only, vinegar only, vinegar-water mixture.

Learners observe and discuss a simple model of a wet scrubber, a device for cleaning industrial air pollution.

In this activity, learners explore moving air and the physics of lift and drag by constructing homemade wind tunnels.

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