Name ________________________________ Date ____________
Sec. 22-3 INTERACTIONS OF LIGHT” AND 22-4 ‘LIGHT AND COLOR REVIEW”
pages 644-656
__________/ 52 points
1) Explain why you can see your reflection on a spoon, but not on a piece
of cloth. ( 4 points)
2). If you look around the parking lot during summer, you might see
aluminum plated sunshades set up in the windshields of cars. How do
sunshades help keep the insides of cars cool? ( 4 points )
3). In a vacuum light travels in a straight line at 300,00 km/sec. What
happens to light rays as they pass from less dense medium to a denser
medium? What light interaction occurs? Explain. ( 4 points )
4). Explain why you sometimes see a rainbow during a rain shower or
shortly after. ( 4 points)
***Use the image on the right to
answer the two following
questions. This image can also be
found on page 651 in your
textbook.
5). Why doesn’t the large beam of light bend like the two beams in the
middle of the tank? ( 4 points )
6). Which light interaction explains what is happening to the bottom light
beam and what law is it observing? ( 4 points )
9). Describe the resulting wave if two waves of equal amplitude interfere
destructively. ( 4 points )
10). List four materials that are transparent, four that are translucent, and
four that are opaque. ( 4 points)
11). Contrast a concave and a convex lens. Discuss at least four differences.
( 4 points)
7). What is the relationship between diffraction and the wavelength of light
(or sound) waves? ( 4 points )
12). A red rose was photographed in red light. Why would the petals
appear red, but the leaves appear black? Explain. ( 4 points)
8). One wave as half the amplitude of a second wave. The two waves
interfere constructively. Draw a diagram and describe the resulting wave.
(4 points )
13). How is mixing colors of light different from mixing colors of pigments?
( 4 points).