1. Light behaves like both a particle and a ______.

2. What particles make up light?

3. What property of light allows us to see objects?

4. What type of reflection occurs when light rays are reflected off of a surface in a single outgoing direction?

5. What type of reflection occurs when light rays are reflected off of a surface in a number of different directions?

6. Which of the following items is the best example of specular reflection?

7. What wave-like property of light causes it to change direction when it moves from one medium to another?

8. When calculating the index of refraction of a substance, what does the letter 'c' stand for?

9. Does light travel faster in water or in a vacuum?

10. What wave-like property of light causes it to bend when encountering an opening?