Lesson 14 mirrors & lenses part i


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Lesson 14 mirrors & lenses part i

  1. 1. 1. Working in pairs, students will match scientific instruments to their measurement. First two pairs to correctly match all instruments earn the “roller” chairs for the period.2. Get your journal ready. Add one page of guided notes to the next available page.3. Time Limit: 8 minutes D. Goldsberry 3/10/12
  2. 2. S8P5:Students will explore thewave nature of sound andelectromagnetic radiation. D. Goldsberry 3/10/12
  3. 3. a. Identify the characteristics of electromagnetic and mechanical waves.b. Describe how the behavior of light waves is manipulated causing reflection, refraction diffraction, and absorption).c. Explain how the human eye sees objects and colors in terms of wavelengths.d. Describe how the behavior of waves is affected by medium (such as air, water, solids).e. Relate the properties of sound to everyday experiences.f. Diagram the parts of the wave and explain how the parts are affected by changes in amplitude and pitch. D. Goldsberry 3/10/12
  4. 4. What is the differencebetween a real imageand a virtual image? D. Goldsberry 3/10/12
  5. 5. Which wave interaction doesa mirror demonstrate?Answer: ReflectionWhen a light ray hits a mirror, the light isreflected off the shiny surface. D. Goldsberry 3/10/12
  6. 6.  Flat surface Produces virtual images– nolight rays pass through the image Upright, same-sized imagehttp://www.geocities.com/CapeCanaveral/Hall/6645/pm-gif.htm D. Goldsberry 3/10/12
  7. 7. What image is produced by the mirror?D. Goldsberry 3/10/12
  8. 8. D. Goldsberry 3/10/12
  9. 9. 1)To look at yourself in the mirror2) To see around an angle – used in periscopes3) Overhead projectorsWhat uses can you think of? D. Goldsberry 3/10/12
  10. 10. Curves outward D. Goldsberry 3/10/12
  11. 11. D. Goldsberry 3/10/12
  12. 12. What will the image of the plant look like ina convex mirror? D. Goldsberry 3/10/12
  13. 13. D. Goldsberry 3/10/12
  14. 14. Virtual image – rays never meetImage is upright and smallerIncrease the field of view D. Goldsberry 3/10/12
  15. 15. 1. Security in stores and factories – to see around the corner2.Side view mirrors on cars – “Objects may be closer than they appear”What other uses can you think of for convex mirrors? D. Goldsberry 3/10/12
  16. 16. Curves inward D. Goldsberry 3/10/12
  17. 17. D. Goldsberry 3/10/12
  18. 18. Has a focal point -- light rays are allreflected to pass through one pointHas a focal length – distance fromthe center of the mirror to the focalpoint D. Goldsberry 3/10/12