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Wave Interactions and Behaviors: Reflection, Diffraction, and Refraction

Discover how waves behave when meeting obstacles or transitioning into different mediums. Learn about the effects of interference, including constructive and destructive interference. Explore the formation of standing waves and the phenomena of reflection, diffraction, and refraction. Gain a comprehensive understanding of wave interactions in this informative chapter.

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Wave Interactions and Behaviors: Reflection, Diffraction, and Refraction

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  1. Chapter 14 Section 3 Wave Interactions

  2. Objectives • Describe how waves behave when they meet an obstacle or pass into another medium. • Explain what happens when two waves interfere. • Distinguish between constructive interference and destructive interference. • Explain how standing waves are formed.

  3. Reflection • Reflection-the bouncing back of a wave when it meets a surface or boundary

  4. Diffraction • Diffraction-a change in the direction of a wave when the wave finds an obstacle or an edge such as an opening

  5. Refraction • Refraction-the bending of a wavefront as the wavefront passes between two substances in which the speed of the wave differs

  6. Refraction of Light • When light moves from a material in which its speed is higher to a material in which its speed is lower, such as from air to glass, the ray is bent toward the normal.

  7. Key Terms Cont. • Dispersion –in optics, the process of separating a wave (such as white light) of different frequencies into its individual component waves ( the different colors).

  8. Different colors of light are refracted differently • In the visible spectrum violet light travels the slowest and red light travels the fastest.

  9. Interference • More than one wave can exist in the same place at the same time. Waves in the same place combine to produce a single wave • When several waves are in the same location the waves combine to produce a single, new wave that is different from the original waves.

  10. Constructive interference • Constructive interference-any interference in which waves combine so that the resulting wave is bigger than the original wave

  11. Destructive interference • Destructive interference-any interference in which waves combine so that the resulting wave is smaller than the largest of the original waves.

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