Waves · SHS2 Physics

Lesson notes

Learning Objectives

Indicator: 2.2.2.LI.4 - Given the amplitude, velocity, frequency, period, wavelength of a wave, deduce the wave equation.

By the end of the lesson, learners can:

Define each term in the wave equation (amplitude, velocity, frequency, period, wavelength) in their own words.
Deduce the relationships v = fλ and f = 1/T from the features of a periodic wave signal.
State and apply the wave equation v = fλ to solve numerical problems involving any two given quantities.
Explain that the wave equation connects the speed of a wave to its frequency and wavelength, and that for a given medium, v remains constant while f and λ adjust.
Calculate the frequency, wavelength, or velocity of a wave when the other two quantities are provided, using appropriate SI units.

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Curriculum details

Strand: Energy (Strand 2)
Sub-strand: Waves (2.2)
Content standard: 2.2.2.CS.1 - Demonstrate knowledge and understanding of the wave equation 2.2.2.LO.1 Deduce the wave equation to from the features of a periodic wave signal
Indicator: 2.2.2.LI.4 - Given the amplitude, velocity, frequency, period, wavelength of a wave, deduce the wave equation.
Suggested placement: Semester 1, Week 17 (Week 17 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 112

Exemplars (from the NaCCA curriculum)

Collaborative learning: Let learners discuss the progressive wave equation and the terms associated with the wave equation.
Encourage diverse perspectives and contributions.
comfortable sharing their reflections and experiences.
Assessment (2.2.2.AS.4). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning.
Teaching and Learning Resources:
- Audio-visuals
- Internet
- Projectors
- YouTube
- Interactive virtual laboratory
- Ripple tank
- Slinky
- Bowl of water