Yay Kevin got points docked off from Gryffindor! Leah could not help but cheer up slightly at the professor's words. Heehee

They could stop bumping now.. What about jogging? The Hufflepuff groaned and speeded up slightly. Charles's law and Boyle's law? She remembered reading about one of those laws before, but forgot which it was. Worth shouting out anyway.

"I think it is Boyle's law, which states that the pressure of a gas decreases as the volume of a gas increases." Leah said out loud. Still.. Jogging.. And panting.