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. Visit the full archived lesson with pictures and audience comments here.
Originally presented on March 18, 2015 | Explore the Support Materials below for the archived live-stream content with questions, comments, and images shared during the live event.