Lab Investigation of Color Mixing

Please submit repsonses to the following assignment at the DropBox Homework file on/before 12:00 noon on Monday, Novemeber 18, 2013.


Supplemental InstructionJennifer, the SI will be available to help with concepts.
Note: The goal of the SI session is to help answer your questions about the concepts in the homework. If you have no questions, she will be unable to help you.
SI meets in Kilpatrick 223 from 6:00-8:00 pm. Note time.

Figure 1: Observation from color mixing activity

Homework

1. During lab, we mixed colors and made observations.

  a. Using the STEM Writing Framework, follow the steps; use everyone’s data, not just your own (see Figure 1).

b. Organize the data using a table or chart.

c.. Describe the findings using scientific language. You will choose from the words on our “word wall” (see Figure 2). Use the scientific terms such as frequency or wavelength rather than color, etc..

Figure 2: Word Wall

 

2. In the lab, we used transparent colors (please make sure you know what transparent means, not the definition, but what it means.). 

 a. If you held up a jar of transparent red solution to your eye, and looked through it, what would you see?  Please explain the way light would behave in this situation. Words that might appear in your explanation would be transmission, transparency, frequency/wavelength, absorbance, reflection, and other words from the word wall.

b. If we used opaque colors instead, what do you predict and how would the results would have been differ?

3. The primary colors of light are RGB. The primary colors of paint are RYB.

a. Please describe what insight this provides to you when you think about the behavior of pigment (as in paint) and the behavior of light.

b. Does color exist before it gets to the eye? Explain.

c. What is vision? Why does vision require light? Please do not discuss rods and cones.

4. During lab, you played with slime and oobleck. The data below shows your observations for oobleck and you collected your observations for slime independently in your lab notebooks.

Figure 3: Observation from color mixing activity

 

What is your explanation for the behavior of non-Newtonian fluids? Use the STEM Writing Heuristic to make claims.