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Science8 Unit C Lightand Optics Lesson5 The Wave Modelof Light
- 1. Light is part of the electromagnetic spectrum and travels in waves
- 4. The high parts of the wave are called crests
- 5. The low parts of the wave are called troughs
- 6. The distance from crest to crest is called wavelength (the distance from one complete crest and one complete trough)
- 7. The height of the crest or the depth of the trough from rest position is called the amplitude
- 8. The Frequency is the rate at which the crest and the trough move up and down. The number of cycles in a period of time - which is usually measured in hertz , or cycles per second.