reflection and mirrors

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This PowerPoint introduces students to the idea of light reflection. Included in this presentation you will find several diagrams that show how light is reflection in concave and convex mirrors.


  • 1. Reflection and Mirrors Pages 548-551

2. What you will learn

  • Types of reflection
  • How to use mirrors for image quality
  • I canpredict the path of reflected light from flat, curved, or rough surfaces
  • I canexplain why the ground gets warm during the day
  • I candraw ray diagrams to indicate how light reflects off objects or refracts into transparent media

3. When Light Strikes an Object

  • Three options
    • Reflected, absorbed, or transmitted
  • Most objects reflect or absorb
    • Opaquea material that reflects or absorbs all of the light that strikes it
      • Wood, metal, cotton

4. Transparent

  • Objects that transmit light
    • Clear glass, water, & air

5. Translucent

  • Materials that allow some light to pass through

6. Translucent, Transparent, or Opaque 7. Translucent, Transparent, or Opaque 8. Translucent, Transparent, or Opaque 9. Translucent, Transparent, or Opaque 10. Reflection

  • You can see most objects because light reflects, or bounces, off them.

11. Regular Reflection

  • Angle of Reflection = Angle of Incidence

12. Diffuse Reflection

  • When parallel rays of light hit a bumpy, or uneven surface
    • Most objects reflect this way

13. Mirrors

  • Sheet of glass that has a smooth, silver-colored coating on one side.

14. Plane Mirrors

  • Produces an image that is right-side up and the same size as the object being reflected
  • Image is called virtual image

15. Concave Mirrors

  • Mirror with a surface that curves inward
  • Type of image depends on position

16. Convex Mirrors

  • Mirror with a surface curved outward

17. Questions

  • 1.Complete this diagram in your notes

18. Questions

  • 2. Complete the ray diagram for this concave mirror

19. Questions

  • Complete the ray diagram for the following convex mirror

20. Questions

  • Why does the ground become warm during the day?

21. Questions

  • Explain the difference between a regular reflection and diffuse reflection.Draw a diagram that supports your response


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