Molecular Motion Demo - Temperature Of A Gas

Purpose

To model gas pressure.
 

Equipment

E.M.E. Molecular Motion Demonstrator with accessories as pictured.

 

Images

i6-34

Description

Two sets of small balls (smaller green and larger blue) are used to model the molecules in the air. The balls are set into motion by vibration of the walls. Increasing the vibration speed of the walls imparts more energy to the balls, simulating higher temperature. Using a single set of balls, the distribution of velocities can be observed. Using two sets of balls with different mass, the average velocity of the smaller balls is seen to be greater than that of the larger balls.