Work Done on a Gas

Physics: AQA GCSE Higher, topic 3.3.4

Work Done on a Gas

Doing work on a gas increases the gas’ internal energy. This increases the temperature of the gas. We can do work on a gas with a bicycle pump.

Gas applies pressure

Gas applies pressure

  • The gas applies pressure (and so a force) to the pump’s plunger.
Do work on the gas

Do work on the gas

  • You must work against this force to push the plunger down.
Increase kinetic energy and temperature of gas

Increase kinetic energy and temperature of gas

  • This work increases the kinetic energy and temperature of the gas.

Test yourself on Work Done on a Gas

  • Which of these happen when we pump up a bike tyre?

  • Which of these does not increase when we pump up a tyre?

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