Fire Extinguisher
Other Relevant Demonstrations :
Aerosol can
Relevant Resource Questions (optional) :
Concepts demonstrated :
- thermal expansion
- adiabatic expansion
Diagram of apparatus :
Equipment needed :
- fire extinguisher
- thermometer or thermocouple
Method for setting up apparatus :
Accessories (ie posters etc) :
Physics involved :
adiabatic expansion of a gas results in a decrease in temperature
How to use the Demonstration :
- measure temp of thermocouple or a matrial
- use extinguisher on material
- measure temperature again.
Use as POE asking students to predict effect and explain why
Everyday examples :
- fire extinguisher
- aerosol can
- air leaking from car tyre
- air supply at a gas station
Other Comments :
Mail me
for any comments.
This page last updated 13th June 1998 by Pal Fekete.
[TP teacher]
[Keyword]
[Questions]
[CD Demos]
[Videos]
[Software]
[Websites]
Copyright © 1996 School of Physics
The University of Sydney