The document asks questions about placing a prism in front of light and observing the colors that appear on a white board. When a prism is placed in front of light, it separates the light into a visible spectrum or rainbow of colors. On the white board, the observer sees the colors of the rainbow spectrum - red, orange, yellow, green, blue, indigo, and violet. Stirring the water causes the colors on the board to blend together. Orange has a longer wavelength than red. A rainbow appears in the order of red, orange, yellow, green, blue, indigo, violet.