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Why does a helium balloon sink
Subject: Why does a helium balloon sink
Posted by Michelle
Grade level: 7-9
School: Marshall Middle School
City: Billerica State/Province: MA
Country: USA
Area of science: Chemistry
Message:
Question submitted for Michelle who does not have an internet
access. Pls respond to the above e-mail address.
Michelle understands that helium is lighter than air, there-
fore a helium balloon will rise. What she does not know is
after a period of time, why will a helium balloon sink?
Re: Why does a helium balloon sink
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