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Scientists use the Gas Laws to explain this relationship between a gas's volume (or mass), its temperature and its pressure.
| Boyle's
Law At a constant temperature the pressure of a fixed mass of gas is inversely proportional to its volume. If you increase the pressure on something its volume decreases. CLICK HERE to see the equation |
| Charles'
Law For a given mass of gas at constant pressure, the volume increases by a constant fraction of the volume at zero degrees Centigrade for each C. degree rise in temperature. If you heat something its volume increases. CLICK HERE to see the equation |
| Pressure
Law This is an equation which explains how the pressure of air changes as the temperature changes. For a fixed amount of gas at a constant volume, the pressure increases or decreases in direct proportion to its absolute temperature (in degrees Kelvin). You can put the two laws above together to conclude that if you want to change the temperature of something you can do it by altering the amount of pressure put on it. CLICK HERE to see the equation |
| CLICK HERE to find out
more about DEGREES KELVIN www.treasure-troves.com/physics/Kelvin.html www.isotech.co.uk/convert.html |
You can find out more about the gas laws and the people who discovered them from these web sites:
- Eric's Treasure Troves
(Science Encyclopaedia)
www.treasure-troves.com/physics - On-line Pressure Chamber
Experiments
http://jersey.uoregon.edu/vlab/Piston/index.html - Information about gas laws,
including experiments and examples
www.ibis.sfu.ca/~rhlogan/gas_laws.html
http://edie.cprost.sfu.ca/~rhlogan/gas_laws.html
www.tibbett.com/cyberscience/Boyle/boyle.htm