Module: Wave Model vs. Particle Model
DCI: PS4.B (A) Electromagnetic radiation (e.g., radio, microwaves,
light) can be modeled as a wave of changing electric and magnetic fields or as
particles called photons. The wave model is useful for explaining many features
of electromagnetic radiation, and the particle model explains other features.
PE: HS-PS4-3 Evaluate the claims, evidence, and reasoning behind
the data that electromagnetic radiation can be described either by a wave model
or a particle model and that for some situations one model is more useful than
the other.
[Clarification
Statement: Emphasis is on how the experimental evidence supports the claim and
how a theory is generally modified in light of new evidence. Examples of a
phenomenon could include resonance, interference, diffraction, and
photoelectric effect.] [Assessment Boundary: Assessment does not include using
quantum theory.]
The ideas are:
- EM radiation can be modeled as a wave of changing electric and magnetic fields
- EM radiation can be modeled as particles called photons
- The wave model is useful for explaining many features of EM radiation
- The particle model explains other features
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