Mirrors ppt

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Mirrors ppt

  1. 1. Mirrors By: Bailey Griggs and Katie Kennedy
  2. 2. Objectives • Mirrors o Distinguish between Concave and Convex mirrors. o Describe a simple ray diagram. o Distinguish between real and virtual images.
  3. 3. Mirrors Outline • Types of Mirrors o Convex o Concave o Spherical o Parabolic • Convex Mirrors o How light reflects o Examples
  4. 4. Mirrors • Concave o How light reflects o Examples • Simple Ray Diagram o Explanation and Examples • Real vs. Virtual Images o Real Images o Virtual Images • Demonstrations • Evaluation Questions
  5. 5. We are going to explore how concave and convex mirrors work along with describing the simple ray diagrams that go along with each one. We will also discuss the real and/or virtual images that both of these mirrors produce.
  6. 6. Different Types of Mirrors Convex Concave Spherical Parabolic
  7. 7. Straight or Plane mirror
  8. 8. Concave
  9. 9. Concave • Reflection • Curved inward reflective surface • Used to magnify • Produces Real and Virtual Images o depend on object’s distance from the surface of the mirror and the focal length.
  10. 10. Convex
  11. 11. Convex • Reflection • Image is small or reduced in size • Image is upright • Image is located behind the convex mirror • Image is always virtual
  12. 12. Convex- smaller image Concave- magnified image
  13. 13. Simple Ray Diagram • Tool used to determine o location o size o orientation o type of image formed Real or Virtual •
  14. 14. • Straight/ Plane mirror • Extended Reflected Rays make up image • Behind the mirror
  15. 15. Simple Ray Diagram for Concave Mirrors Whether the image is upside-down or rightside up depends of the distance you are from the mirror and the focal length of each mirror.
  16. 16. Simple Ray Diagram for Convex Mirrors
  17. 17. Real vs. Virtual Images • • Virtual image o Object is less than the focal length of the mirror o Can only be seen by looking at the mirror, not projected Real Image o object is further than focal length of mirror o Can be projected and everyone in the room can look at it
  18. 18. Demonstration Time!
  19. 19. Evaluation Questions
  20. 20. Evaluation Question #1 Which mirror produces an image behind the mirror, Concave or Convex? Convex
  21. 21. Evaluation Question #2 True or False: Concave mirrors are used to magnify images. True
  22. 22. Evaluation Question #3 A _____________ mirror takes a large space and makes it small. Convex
  23. 23. Evaluation Question #4 An image that is produced that is less than the focal length of the mirror is a ______________ image. Virtual
  24. 24. Evaluation Question #5 A ______________ image can be projected. Real
  25. 25. Evaluation Question #6 Label the diagram with Concave or Convex with the correct image. Concave Mirror Convex Mirror
  26. 26. Evaluation Question #7 The point at which the extensions of the reflected rays intersect is the _________ of the image being produced. a. Bottom b. Top c. Center
  27. 27. Evaluation Question #8 Concave mirrors produce: a. Real Images b. Virtual Images c. Both
  28. 28. Bibliography Flinn, G. (n.d.). HowStuffWorks "Types of Mirrors". HowStuffWorks "Science". Retrieved October 21, 2013, from http://science.howstuffworks.com/innovation/everyday-innovations/mirror3.htm Flinn, G. (n.d.). HowStuffWorks "Types of Mirrors". HowStuffWorks "Science". Retrieved October 21, 2013, from http://science.howstuffworks.com/innovation/everyday-innovations/mirror3.htm Henderson, T. (n.d.). Reflection and Image Formation for Convex Mirrors. The Physics Classroom. Retrieved October 21, 2013, from http://www.physicsclassroom.com/class/refln/u13l4a.cfm Hewitt, P. G. (2002). Conceptual physics: the high school physics program. Needham, Mass.: Prentice Hall. Moore, C. (n.d.). Concave and Convex Mirrors. More House. Retrieved October 18, 2013, from https://www.morehouse.edu/facstaff/cmoor

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