Has anyone ever told you that you're full of hot air? How is hot air different from cooler air? This fast-paced webcast will look at how hot air balloons float and how a change in air pressure affects them.

Educator Resources:
Lesson Plan - Lighter Than Air: Building a Hot Air Balloon
Balloon Template

This program is made possible through the generous support of the Gerturde E. Skelly Charitable Foundation.