Color Webquest

BrainPop Color

Log in (ask the teacher for log in information). Find the video called “Color”. Watch the video, then answer the following questions. You can watch the video more than once if you need to.

1. What part of the electromagnetic spectrum can we see?

a. visible light

b. gamma rays

c. radio waves

2. What are the main colors in the visible light spectrum?

a. red, green, and blue

b. red, orange, yellow, green, blue, indigo, and violet

c. black and white

3. What are the primary colors of light?

a. red, green, and blue

b. black, white, and gray

c. green, yellow, and red

4. Why does a red ball look red?

a. because it reflects red light waves and absorbs all others

b. because it absorbs red light waves and reflects all others

c. because it absorbs all light waves

5. What happens what all of the colors in the visible light spectrum combine?

a. They turn black.

b. They form white light.

c. They create an explosion.

6. What are color pigments used in?

a. paints

b. rainbows

c. ocean waves

7. What are the primary pigment colors?

a. red, green, and blue

b. cyan, magenta, and yellow

c. orange, mauve, and purple

RGB World – Understanding Color

www.rgbworld.com/color.html

Primary Colors:

1. What are the 3 predominant colors of light?

Additive Color System:

2. In an additive color system, what color will be produced by adding the following 2 color combinations:

a. green light + blue light =

b. red light + blue light =

c. green light + red light =

3. In an additive color system, light is emitted directly from a source, before an object ______________________.

4. If a red, green and blue spotlight were focused on a spot, what color would you see where all 3 lights are mixed together?

Subtractive Color System:

5. The subtractive color system involves ______________ and ________________ light.

6. List 3 things that use the subtractive process to produce color.

Mix-N-Match

www.exploratorium.edu/exhibits/mix_n_match

1. How many different colors can you make by mixing 3 colors of light?

2. Change the amounts of color and experiment to see what colors you should mix to get different colors.

3. Follow the directions under “To Do and Notice.” Experiment for about 5 minutes and record your findings below.

The Science of Light

www.learner.org/teacherslab/science/light/index.html

1. Our brain makes extraordinary things happen in perception. Movies are sequences of ______________; magazines are a bunch of _______________________.

2. Click on “Light in Color”, then “Made from Dots.” What do you observe about the magazine photo as it is blown up?

3. What 4 colors are magazines printed in?

4. Click “Go.” See if you can match some sample colors by mixing cyan, magenta and yellow together. Try a few different ones until you start to get the hang of it. Write a few statements below about your findings. (Was it easy or hard? Did you get better as you practices?)

Combined Color Mixing

http://www.cs.brown.edu/exploratories/freeSoftware/repository/edu/brown/cs/exploratories/applets/combinedColorMixing/combined_color_mixing_java_browser.html

1. Put in a red light. Click “show light beams”. What color does the person see?

2. Put in a red filter. Click “show light beams.” What color does the person see?

3. Put in a blue filter. Click “show light beams.” What color does the person see?

4. Play around with the colored lights and filters. Try at least 4 more combinations. Record your findings in the table below.

Light bulb color	Filter color	Color person sees

If you have extra time, you can check out the websites below.

Optical Illusions

http://www.exploratorium.edu/exhibits/f_exhibits.html

Check out the optical illusions at this website. Write a couple of statements about which was your favorite and why.

Color Vision Testing

http://colorvisiontesting.com/online%20test.htm#demonstration%20card

Take this online test for colorblindness. Write a couple of statements about what you learned about your color vision.