Module: Conservation of Energy
DCI: PS3.B (A) Conservation of energy means that the total change
of energy in any system is always equal to the total energy transferred into or
out of the system.
DCI: PS3.B (C) Mathematical expressions, which quantify how the
stored energy in a system depends on its configuration (e.g. relative positions
of charged particles, compression of a spring) and how kinetic energy depends
on mass and speed, allow the concept of conservation of energy to be used to
predict and describe system behavior.
DCI: PS3.B (D) The availability of energy limits what can occur in
any system.
PE: HS-PS3-1 Create a
computational model to calculate the change in the energy of one component in a
system when the change in energy of the other component(s) and energy flows in
and out of the system are known.
[Clarification Statement: Emphasis is on explaining the meaning of mathematical expressions used in the model.] [Assessment Boundary: Assessment is limited to basic algebraic expressions or computations; to systems of two or three components; and to thermal energy, kinetic energy, and/or the energies in gravitational, magnetic, or electric fields.]
The basic content of the standard seems to be as follows.
- The change of energy in a system is equal to the total amount of energy that goes into the system or out of the system.
- We can predict the behavior of a system by using mathematical expressions that quantify the energy stored in a system.
- What happens in a system is limited by the amount of energy in the system.
- In addition, students should be calculating the change in energy in a system as energy flows into or out of the system.
Possible Questions:
- Perhaps one question about the change of energy in a system being equal to energy in or out
- Maybe a question about systems being limited by available energy (?)
-
No comments:
Post a Comment