Lesson
Lesson-8.1.8- explain that all waves can be reflected and refracted.
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Lesson-8.1.7- explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer, and that this is known as the Doppler effect.PreviousLesson-9.1.1- know that light is part of a continuous electromagnetic spectrum that includes radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray radiations and that all these waves travel at the same speed in free space.Next