Chapter Objectives:

• Describe what happens to light when it strikes different materials.
• Describe the law of reflection.
• Explain why a mirror forms a virtual image.
• Describe diffuse reflection.
• Give examples of ways to control reflected sound.
• Explain the change in direction of a wave when it crosses a boundary between media.
• Describe the effects of refraction of sound waves.
• Describe the effects of refraction of light.
• Explain how mirages are formed.
• Explain how a prism separates white light into colors.
• Describe how a rainbow is formed.
• Describe total internal reflection, its effects, and its applications.
  

Chapter Terms:

• reflection
• refraction
• Fermat's principle of least time
• law of reflection
• diffuse reflecton
• critical angle
• total internal reflection
• converging lens
• diverging lens
• virtual image
• real image
• aberration

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Chapter Outline Framework:

• Reflection
• {romco[;ef :Least Time
• Law of Reflection
  • Plane Mirrors
  • Diffuse Reflection
• Refraction
• cause of Refraction
  • Dispersion
  • Rainbows
• Total Internal Refraction
• Lenses
  • Image Formation by a Lens

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