Waves · SHS2 Physics

Lesson notes

Learning Objectives

Indicator: 2.2.2.LI.1

By the end of the lesson, learners can:

Define at least eight key wave terms (electromagnetic waves, mechanical waves, longitudinal waves, transverse waves, progressive waves, stationary waves, rarefactions, compressions, crest, trough, amplitude, wavelength, period, and frequency) in their own words after researching from the internet or reference books.
Classify a given wave example as either mechanical or electromagnetic, and as either longitudinal or transverse, with correct justification.
Identify the crest, trough, amplitude, and wavelength on a diagram of a transverse wave signal.
Describe the four wave properties of reflection, refraction, diffraction, and interference with one everyday example for each.
Demonstrate reflection and refraction of waves using a bowl of water or a ripple tank and explain what was observed.

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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.1 - Identify types of waves with its properties.
Suggested placement: Semester 1, Week 15 (Week 15 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: Using the internet/reference books let learners research to come out with the definition/explanation of the following terms; electromagnetic waves, mechanical waves, longitudinal waves, transverse waves, progressive waves, stationary waves, rarefactions, compressions, crest, trough, amplitude, wavelength, period and frequency. Use videos to demonstrate and discuss the following properties of wave; reflection, refraction, diffraction and interference of waves (superposition of waves).
Recognise diverse talents and perspectives.
Assessment (2.2.2.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding.
Teaching and Learning Resources:
- Audio-visuals
- Internet
- Projectors
- YouTube
- Interactive virtual laboratory
- Ripple tank
- Slinky
- Bowl of water