DCI: PS3.A (B2) A system of objects may also contain stored
(potential) energy, depending on their relative positions.
PE: MS-PS3-2 Develop a model to describe that when the arrangement
of objects interacting at a distance changes, different amounts of potential
energy are stored in the system.
[Clarification Statement: Emphasis is on
relative amounts of potential energy, not on calculations of potential energy.
Examples of objects within systems interacting at varying distances could
include: the Earth and either a roller coaster cart at varying positions on a
hill or objects at varying heights on shelves, changing the
direction/orientation of a magnet, and a balloon with static electrical charge
being brought closer to a classmate’s hair. Examples of models could include
representations, diagrams, pictures, and written descriptions of systems.]
[Assessment Boundary: Assessment is limited to two objects and electric,
magnetic, and gravitational interactions.]
The ideas in this standard are:
- a system contains stored potential energy, which can change depending on the relative positions of the objects in the system
This will be similar to the previous batch, where we compared the stored energy between two objects at different distances. This one, though, should focus more specifically on stored potential energy.
Possible Question Starters:
"A book is sitting on the table. Which of the following actions would increase the book's potential energy?"
correct answer - moving the book to a high shelf
incorrect answer - slide the book across the table
"At which point in the diagram does the apple have the highest potential energy?"
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