Bill takes to the sky in a hot-air balloon, and goes scuba diving in the Seattle Aquarium to explain why things like boats, helium, and balloons are buoyant.

Teacher's guide and student worksheet available under Additional Info tag. Optional Spanish language track for the DVD version only.

14 segments include:. Introduction. Displacement. Let's Review: Displacement. Great Moments in Science. Consider the Following: Floating and Sinking. Check It Out!: Environmental Suffers. A Test!: What Floats What Doesn't. Try This!: Make a Submarine. Neutral Buoyancy and Mini Subs. Buoyancy Compensators. Hot Air Balloons. Sure Floats Alot "Bill's Got Boat". Conclusion. Try This!: Make a Sinking Boat.