1. Energy Storage and Transfer
©American Modeling Teachers Association 2015

2. The Story so far…
Energy
Motion
We can “see” and measure motion
Force
Energy causes changes in matter
Energy can be stored and transferred
We can “feel” and measure force
An unbalanced Force is needed to cause a change in motion (acceleration)
But what does energy have to do with motion and forces? ?

3. Energy is like Money
Energy, like money, can be stored in different accounts.

4. Energy, like money, can be transferred in different ways.
Energy is transferred like Money
Energy, like money, can be transferred in different ways.

5. Energy is also like Information
Both energy and information can be stored and transferred in different ways.

6. Energy At the Macroscopic Level
We’ll use a simulation to help us think about energy at the macroscopic level.
Click on image to open simulation

7. As the skateboarder goes down the ramp what quantities change?
Energy causes Change
As the skateboarder goes down the ramp what quantities change?
What can be measured?
Both the forces required to get the skater to move, how far the skater travels, the speed, etc.
The bigger the change in the value of these quantities, the more energy transferred

8. Energy Accounts Just like with particles it is
Kinetic Energy (KE):
Just like with particles it is
the energy associated with
Motion.
Potential Energy (PE):
Is a type of stored energy associated with an object’s position.
At the macroscopic level it can thought of as dissipated energy because it is the “heat” leaving the system.
Thermal Energy:

9. You’ll be manipulating this Skate Park simulation to observe energy at the macroscopic level
Kinetic energy
Potential energy
Thermal energy - dissipated energy due to friction

10. Now let’s try #1 on your worksheet