1. In your own words, what does the law of reflection state?
  2. What is diffuse reflection? Which object causes diffuse reflection: a mirror or a piece of paper?
  3. What is refraction, and when does it happen?
  4. A penny lies at the bottom of a lake. Drawan imaginary light beam where it seems like the penny is coming from. Is the penny really higheror lowerthan where it looks like?
  5. A beam of light emerges from a pool, and it’s at an angle.  As it leaves the water and travels to the air, does the beam of light bend toward the Normal or away from the normal?  Draw a picture to help.
  6. What is the property called that causes objects to look different shapes underwater?
  7. See the figure below: circle how tall must a mirror be in order for you to see your whole body in the mirror?
    1. Half your height ¾ your height          c. Your whole height
  8. Which is denser (thicker): water or glass? Which one does light travel faster in?
  9. Explain what happens to parallel light rays that go through a converging lens?
  10. A candle far away (further than the focus point) makes an image using a converging lens; is that image upside down or right-side up?
  11. A candle very close to a lens (closer than the focus point) makes an image using a converging lens; is that image upside down or right-side up?
  12. A candle far away (further than the focus point) makes an image using a diverging lens; is that image upside down or right-side up?
  13. What kind of lens is a magnifying glass?
  14. What is another name for a converging lens? What is another name for a diverging lens?
  15. What two light rays should you draw for a ray diagram? Explain how to draw each one, and what you should do if the beams do not cross.
  16. If an object is located between the focal point and a converging lens, will its image be bigger or smaller than the object itself?Show how you know.
  17. If an object is located between the focal point and a diverging lens, will its image be bigger or smaller than the object itself?Show how you know.
  18. Briefly explain how to draw a normal line.
  19. What is the angle of incidence for the following rays? (Not to scale) See picture below.
  20. Finish the light rays for light that is transmitted through the following mediums: See picture below.
  21. Find the following angle of incidences by measuring with a protractor:
  22. What’s the difference between a virtual image and a real image?
  23. Suppose you stand 5 feet in front of a mirror; how far away is your image from where you’re standing?
  24. What is a critical angle?
  25. What is a wavefront?