NOVA menu (see bottom of page for text links)

NOVA Online
Balloon Race Around The World menu (see bottom of page for text links)


Image of Helium box, Air box, and two blank spaces

Yep, you got it. Now from the remaining two boxes, pick the one with the next-least mass:

Water Oil


Global Contenders '97/'98 | Expedition '96/'97 | Fossett | Virtual Flight
Science of Ballooning | Teacher's Guide | Resources | Transcript | Balloon Home

Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule
About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print
PBS Online | NOVA Online | WGBH

© | Updated October 2000