Reflection and Mirrors

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Post on 27-Jun-2015

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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.

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<ul><li> 1. Reflection and Mirrors Pages 548-551</li></ul> <p> 2. What you will learn </p> <ul><li>Types of reflection </li></ul> <ul><li>How to use mirrors for image quality </li></ul> <ul><li>I canpredict the path of reflected light from flat, curved, or rough surfaces</li></ul> <ul><li>I canexplain why the ground gets warm during the day </li></ul> <ul><li>I candraw ray diagrams to indicate how light reflects off objects or refracts into transparent media </li></ul> <p> 3. When Light Strikes an Object </p> <ul><li>Three options </li></ul> <ul><li><ul><li>Reflected, absorbed, or transmitted </li></ul></li></ul> <ul><li>Most objects reflect or absorb </li></ul> <ul><li><ul><li>Opaquea material that reflects or absorbs all of the light that strikes it </li></ul></li></ul> <ul><li><ul><li><ul><li>Wood, metal, cotton </li></ul></li></ul></li></ul> <p> 4. Transparent </p> <ul><li>Objects that transmit light </li></ul> <ul><li><ul><li>Clear glass, water, &amp; air </li></ul></li></ul> <p> 5. Translucent </p> <ul><li>Materials that allow some light to pass through </li></ul> <p> 6. Translucent, Transparent, or Opaque 7. Translucent, Transparent, or Opaque 8. Translucent, Transparent, or Opaque 9. Translucent, Transparent, or Opaque 10. Reflection </p> <ul><li>You can see most objects because light reflects, or bounces, off them. </li></ul> <p> 11. Regular Reflection </p> <ul><li>Angle of Reflection = Angle of Incidence </li></ul> <p> 12. Diffuse Reflection </p> <ul><li>When parallel rays of light hit a bumpy, or uneven surface </li></ul> <ul><li><ul><li>Most objects reflect this way </li></ul></li></ul> <p> 13. Mirrors </p> <ul><li>Sheet of glass that has a smooth, silver-colored coating on one side. </li></ul> <p> 14. Plane Mirrors </p> <ul><li>Produces an image that is right-side up and the same size as the object being reflected </li></ul> <ul><li>Image is called virtual image </li></ul> <p> 15. Concave Mirrors </p> <ul><li>Mirror with a surface that curves inward </li></ul> <ul><li>Type of image depends on position </li></ul> <p> 16. Convex Mirrors </p> <ul><li>Mirror with a surface curved outward </li></ul> <p> 17. Questions </p> <ul><li>1.Complete this diagram in your notes </li></ul> <p> 18. Questions </p> <ul><li>2. Complete the ray diagram for this concave mirror </li></ul> <p> 19. Questions </p> <ul><li>Complete the ray diagram for the following convex mirror </li></ul> <p> 20. Questions </p> <ul><li>Why does the ground become warm during the day? </li></ul> <p> 21. Questions </p> <ul><li>Explain the difference between a regular reflection and diffuse reflection.Draw a diagram that supports your response </li></ul>

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