084 094 104 • Name:

• ☁ ____________________ ___________________
• ☁ ____________________ ___________________
• ☁ ____________________ ___________________

Matching

A.	B.	C.	D.	E.
F.	G.	H.	I.	J.

1. Matching
   • _____ Blue
   • _____ Brown
   • _____ Cyan
   • _____ Green
   • _____ Magenta
   • _____ Olive
   • _____ Orange
   • _____ Purple
   • _____ Teal
   • _____ Yellow
2. Primary and secondary colors
   1. List the primary colors of light (additive colors):
   2. List the secondary colors of light (additive colors):
   3. List the primary colors of paint and pigments (subtractive colors):
   4. List the secondary colors of paint and pigments and printers (subtractive colors):
3. Color systems
   1. In the RGB color number system, what do R, G, and B stand for?
   2. Define Hue:
   3. Define Saturation:
   4. Define Luminosity:
   5. What is the name of the computer color system that uses color words such as red, crimson, cyan, antiquewhite?
4. A RipStik was swizzled ("wiggled") across a poster paper. The sinusoidal swizzle wave can be seen in the diagram below along with the measurements.
   
   1. _________ How many wavelengths are shown?
   2. λ = _________ _________ Calculate the wavelength λ of one wave in centimeters.
   3. a = _________ _________ Calculate the amplitude a.
   4. τ = _________ _________ Calculate the period τ.
   5. f = _________ _________ Calculate the RipStik swizzle wave frequency f.
   6. ѵ_wave = _________ _________ Use the wavelength λ and frequency f to calculate the velocity ѵ_wave of the RipStik swizzle wave.
5. A clapper clapping in synch with the echo claps 25 times in ten seconds during laboratory nine. The distance to the building and back was 132 meters.
   1. τ = ________ _________ Based on this data, what is the period for the echo (the out-and-back time in seconds for one echo)?
   2. velocity ѵ = _________ _________ Based on this data, what is the speed of sound?
   3. percent error = _________ Given that the actual speed of sound that day was 350 m/s, what is the percentage error?

period τ = 1 ÷ (frequency f )
velocity ѵ = wavelength λ * frequency f
$\text{percent error}=\frac{(\text{experimental value}-\text{expected value})}{\left(\text{expected value}\right)}$