Physics Instructional Guide

Interference and Diffraction

Physics

Quarter 3

McGraw Hill Module 17

RESOURCES

PACING

● Module Launch: 45 min ● Lesson 1: 90 min ● Lesson 2: 90 min ● Module Close: 45 min

Module 17: Interference and Diffraction ● Phenomenon: What makes this hummingbird's feathers appear shiny and shimmery?

● Lesson 1: Interference ● Lesson 2: Diffraction ● Module Wrap-Up

STANDARD

LEARNING PROGRESSIONS

● I can explore double-slit interference and thin-flm interference. ● I can understand that some iridescence is produced by thin-flm interference. ● I can explore single-slit diffraction gratings. ● I can understand that diffraction can also cause iridescence.

Standard PHYS.4.2 Engage in argument based on evidence that electromagnetic radiation can be described either by a wave model or a particle model, and that for some situations one model better explains interactions within a system than the other. Emphasize how the experimental evidence supports the claim and how models and explanations are modifed in light of new evidence. Examples could include resonance, interference, diffraction, or the photoelectric effect. (PS4.A, PS4.B)

CONCEPTS (Nouns)

SKILLS (Verbs)

● Incoherent and Coherent Light ● Interference of Coherent Light

● Evaluate Information

● Double Slit Interference ● Thin Film Interference ● Single Slit Diffraction

VOCABULARY

● Incoherent Light ● Monochromatic Light ● Wavelength

● Coherent Light ● Destructive Interference ● Diffraction pattern

● Interference ● Constructive Interference ● Diffraction grating

K-12 LEARNING PROGRESSIONS (via USBE Core Guides)

Standard 4.2

END OF THE UNIT COMPETENCY WITH LANGUAGE SUPPORTS