Preview - Pnom - Particulate Nature Of Matter

Exploration 3 - Procedure

Now it is your turn to experiment with the Virtual Syringe Force graph model.

  1. As you did in the previous exploration, create a world with an even number of particles both inside and outside of the syringe.
  2. Press the "Draw Force vs Time Graph" button near the bottom of the NetLogo screen.
  3. Click and drag in the graph part of the view to draw the general shape of the external force graph shown to the right.
  4. Using the "SAVE" button, save the state of your model so that you can repeat the experiment if you need to.
  5. Press PREPARE FOR EXPERIMENTAL RUN and then press RUN EXPERIMENT buttons to test the effects of the force graph on the model.
  6. You will sketch the shape of the Plunger Level graph and the shape of the Net Particle Forces graph in the following steps.

 

Questions

Please answer the questions below.

Sketch the Plunger Level graph for the previous run.

Note: Draw your sketch in the sketchpad below

Sketch the Net Particle Forces line (that appears in the "Forces on Syringe Plunger" graph) from the previous run.

Note: Draw your sketch in the sketchpad below

Compare the shape of these three graphs:

  • Net Particle Forces graph
  • External Forces graph
  • Plunger level graph. 

Why does the trapped air in the bottom part of the piston tend to push back more, the further the piston is pressed down?

Why does the general trend of the Net Particle Forces graph appear to be the additive inverse of the External Forces Graph?

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.