Weight of Air using balls and springs on a rod

2B40.45D | Ae6
Catalog: 
2B40.45D
Location: 
Ae6
Room: 
PS F175
Quantity: 
0
Setup Time: 
30 minutes
3
  • Ball alternating with springs are compressed more at the bottom. This shows how
    Ball alternating with springs are compressed more at the bottom. This shows how the density of air changes with altitude.
  • The components of the kit ares shown here. There are light and heavy springs and
    The components of the kit ares shown here. There are light and heavy springs and the weingt of the ball can be increased by inserting a nut. There is a small hole in the ball that allows it to be arranged on a rod.
Date Added: 
Tuesday, June 13, 2006 - 12:00am
Description: 

Balls with holes in them are arranged over a rod with alternating balls and springs. When held vertically the bottom spring is compressed more than the top one simulating the weight of air.

Instructions: 

PASCO's Matter Model is a collection of balls that connect with springs to form a cubic model. There is also a hole in the balls so that the balls and springs can fit over a rod.

Purpose: 
To show that the density of air decreases with altitude.
Parts: 


40 balls 4.5 g
60 heavy springs 350 N/m
60 light springs 70 N/m
30 nuts to increase weight
brass rod
might be stored at 1 - 1