increasing the pressure of gases

Question 1

what is work?

Answer 1

the transfer of energy by a force

Question 2

what happens when work is done on a gas?

Answer 2

• increases the internal energy of the gas
• can cause an increase in the temperature of the gas

Question 3

how does doing work with a bike pump increase temperature?

Answer 3

• gas applies pressure to the plunger of the pump so exerts a force on it
• work has to be done against the force to push down the plunger
• this transfers energy to the kinetic energy stores of the gas particles, increasing temperature