# mirrors ppt

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• 1. Mirrors By: Bailey Griggs and Katie Kennedy

2. Objectives Mirrors o Distinguish between Concave and Convexmirrors. o Describe a simple ray diagram. o Distinguish between real and virtual images. 3. Mirrors Outline Types of Mirrors o Convexo Concave o Spherical o Parabolic Convex Mirrors o How light reflects o Examples 4. Mirrors Concave o How light reflects o Examples Simple Ray Diagram o Explanation and Examples Real vs. Virtual Images o Real Imageso Virtual Images Demonstrations Evaluation Questions 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. Different Types of Mirrors Convex ConcaveSpherical Parabolic 7. Straight or Plane mirror 8. Concave 9. Concave Reflection Curved inward reflective surface Used to magnify Produces Real and Virtual Images o depend on objects distance from thesurface of the mirror and the focal length. 10. Convex 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. Convex- smaller image Concave- magnified image 13. Simple Ray Diagram Tool used to determine o location o size o orientationo type of image formed Real or Virtual 14. Straight/Plane mirror ExtendedReflected Rays make up image Behind the mirror 15. Simple Ray Diagram for Concave MirrorsWhether 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. Simple Ray Diagram for Convex Mirrors 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. Demonstration Time! 19. Evaluation Questions 20. Evaluation Question #1 Which mirror produces an image behind the mirror, Concave or Convex?Convex 21. Evaluation Question #2 True or False: Concave mirrors are used to magnify images.True 22. Evaluation Question #3 A _____________ mirror takes a large space and makes it small.Convex 23. Evaluation Question #4 An image that is produced that is less than the focal length of the mirror is a ______________ image.Virtual 24. Evaluation Question #5 A ______________ image can be projected.Real 25. Evaluation Question #6 Label the diagram with Concave or Convex with the correct image.Concave MirrorConvex Mirror 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. Evaluation Question #8 Concave mirrors produce: a. Real Images b. Virtual Images c. Both 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.htmFlinn, G. (n.d.). HowStuffWorks "Types of Mirrors". HowStuffWorks "Science". Retrieved October 21, 2013, from http://science.howstuffworks.com/innovation/everyday-innovations/mirror3.htmHenderson, 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.cfmHewitt, 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