Name ______Period _____
Practice Test: Light and Color
1. List the 7 types of electromagnetic radiation in order from longest wavelength to shortest wavelength. Then label the waves that have the shortest and longest wavelengths, and the lowest and highest frequency.
2. What color visible light has the longest wavelength? ______the shortest? ______
3. What is the speed of light? ______
4. How long would it take light to get from the Sun to Jupiter, which is 780,000,000,000 meters from the Sun?
5. What is the source of all electromagnetic waves? ______
6. What is the wavelength of an EM wave that has a frequency of 25,000 Hz? Please show your work.
7. What is a nanometer? ______
8. What is the frequency of an EM wave that has a wavelength of 550 nm?
9. What happens in a prism to make the colors of light separate into a rainbow? ______
______
10. What are the three primary colors of light? ______
11. What is the complimentary color of…
a. red light? ______b. green light? ______c. blue light? ______
12. What part of your eye distinguishes colors? ______
What part of your eye distinguishes dark from light? ______
Where in your eye are those cells? ______
13. Your answer choices for the following questions are: red, green, and blue (or more than one of those choices.) When viewed under white light (made of red, green and blue light), a ...
a. ... red shirt will absorb ______light and reflect ______light.
b. ... green shirt will absorb ______light and reflect ______light.
c. ... blue shirt will absorb ______light and reflect ______light.
d. ... cyan shirt will absorb ______light and reflect ______light.
e. ... magenta shirt will absorb ______light and reflect ______light.
f. ... yellow shirt will absorb ______light and reflect ______light.
g. ... black shirt will absorb ______light and reflect ______light.
15. What color will a magenta object appear when placed under a yellow light? Draw a diagram and explain your answer.
16. The diagram below shows what happens to a ray of light when it strikes the surface of a plane mirror. The vertical dotted line is at 90o to the surface of the mirror. Which statement is NOT true?
a. angle 3 is the angle of reflection
b. angle 1 is always equal to angle 2
c. angle 2 is always equal to angle 3
d. angle 2 is the angle of incidence
17. A ray of light is incident towards a plane mirror at an angle of 30-degrees with the mirror surface. What will be the angle of reflection?
18. The law of reflection is always observed:
Explain what happens when light is reflected off a rough surface. ______
______