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published by the PhET
Available Languages: English, French, Spanish
This Java simulation enables you to experiment with a balloon filled with different gases inside a container that can hold two different gases at various pressures.  You can discover what variables are important in floating and sinking. This is part of a larger collection developed by the Physics Education Technology project (PhET).

Note:  As of 2020, the PhET Project has partnered with Leaning Technologies to allow Java sims to run in a PC browser via CheerpJ. May currently be difficult to run on iPads.

Please note that this resource requires Java Applet Plug-in.
Subjects Levels Resource Types
- General
- Statics of Fluids
= Density and Buoyancy
- Models
= Ideal Gas
- High School
- Lower Undergraduate
- Informal Education
- Instructional Material
= Activity
= Curriculum support
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
- text/html
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Access Rights: Free access
Restriction: © 2007 University of Colorado, Physics Education Technology
Additional information is available.
Keywords: Gas law, buoyancy, fluids, gas , pressure, temperature, thermodynamics
Record Cloner: Metadata instance created November 15, 2007 by Alea Smith
Record Updated: Oct 30, 2020 by Caroline Hall
Last Update
when Cataloged:
November 15, 2007
Other Collections:
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
(PhET, Boulder, 2007), WWW Document, (
PhET Simulation: Balloons & Buoyancy (PhET, Boulder, 2007), <>.
APA Format
PhET Simulation: Balloons & Buoyancy. (2007, November 15). Retrieved June 24, 2024, from PhET:
Chicago Format
PhET. PhET Simulation: Balloons & Buoyancy. Boulder: PhET, November 15, 2007. (accessed 24 June 2024).
MLA Format
PhET Simulation: Balloons & Buoyancy. Boulder: PhET, 2007. 15 Nov. 2007. 24 June 2024 <>.
BibTeX Export Format
@misc{ Title = {PhET Simulation: Balloons & Buoyancy}, Publisher = {PhET}, Volume = {2024}, Number = {24 June 2024}, Month = {November 15, 2007}, Year = {2007} }
Refer Export Format

%T PhET Simulation: Balloons & Buoyancy %D November 15, 2007 %I PhET %C Boulder %U %O application/java

EndNote Export Format

%0 Electronic Source %D November 15, 2007 %T PhET Simulation: Balloons & Buoyancy %I PhET %V 2024 %N 24 June 2024 %8 November 15, 2007 %9 application/java %U

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Citation Source Information

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