1. Light
A self-check quiz

2. 1. What is the only thing that we see?
A. Objects
B. Waves
C. Light
D. All of the above

3. 2. Christian Huygens demonstrated that :
A. Light is a particle
B. Light is a wave
C. Light is sometimes a wave and sometimes a particle
D. Light is both a particle and a wave at the same time

4. 3. Light was thought to be a wave because
A. It collided
B. It interfered
C. It traveled fast
D. All of the above

5. 4. Who used observations of Io to examine the speed of light?
A. Huygens
B. Michelson
C. Einstein
D. None of the above

6. 5. Who is associated with the famous experiment that verified the speed of light?
A. Huygens
B. Michelson
C. Einstein
D. None of the above

7. 6. “Light consists of massless bundles of energy called photons
6. “Light consists of massless bundles of energy called photons.” This is:
A. The photoelectric effect
B. The wave-particle duality
C. The proof that light is a wave
None of the above

8. 7. “Light consists of massless bundles of energy called photons
7. “Light consists of massless bundles of energy called photons.” This is attributed to
A. Huygens
B. Michelson
C. Einstein
D. Roemer

9. 8. Electromagnetic waves are:
A. Longitudinal
B. transverse
C. No one really knows yet
D. Not true waves

10. 9. Waves on the far right of the electromagnetic spectrum have
A. The most energy
B. The least energy
C. The longest wavelength
D. Both A and C

11. Which of the following have longer wavelengths than violet light?
A. Gamma
B. X-rays
C. Infrared
D. All of the above

12. Polarized light
A. Is all one color
B. Comes from the sun
C. Cannot be filtered out
D. Vibrates in one direction only

13. Light strikes a vertical, metal wall and is reflected
Light strikes a vertical, metal wall and is reflected. The reflected ray
A. Is not polarized
B. Can be blocked completely by making it pass through a polarizing filter with a horizontal axis
C. Can be blocked completely by making it pass through a polarizing filter with a vertical axis
D. None of the above

14. Answers
1. C C
2. B B
3. B A
4. D C
5. B D
6. A B