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This site was created for ThinkQuest '99
by Karolina, Ryan, and Elizabeth
with coach Mr. Holcomb.

 Reflection & Refraction Quiz

1. Angle of incidence=
optical density
angle of reflection
index of refraction

2. A reflection of a surface that is not smooth is called a
diffuse reflection
sharp reflection
total internal reflection

3. The higher the optical density of something, the ______ a time light has getting through it
harder
easier
faster

4. The optical density is also known as the
index of reflection
index of incidence
index of refraction

5. Optical density can be found by dividing the speed of light by
the speed of sound
the speed of light in the substance
the temperature of the substance

6. The sine of angle of incidence divided by the sine of angle of refraction equals optical denisty is called
Snell's law
Newton's law
Bernouli's principle

7. The perpendicular to where light hits a substance is called
the index of reflection
the angle of refraction
the normal

8. Optical fibers work because of
Bill Gates
rainbows
total internal reflection

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