R5 Steps to create Visual Vocabulary Chart wavelength wave height crest wave amplitude trough Draw a wave on chart paper and ask: What does this drawing represent? [wave] Once participants identify the drawing as a wave, add a label. Ask: What do we call the top, or the highest surface part, of a wave? [crest] What do we call the lowest point of the wave? [trough] Add crest and trough to the visual vocabulary chart. Ask: How do we describe the wavelength? [the horizontal distance between two crests or two troughs] How do we describe the wave height? [the vertical distance between the crest and trough of a wave] Add wavelength and wave height to the chart. Say: Another word used to describe waves is amplitude. The amplitude of a wave is half of the wave height. Add amplitude on the chart. CA NGSS Rollout #3: Deepening Understanding of Scientific Modeling Elementary
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