1. Light and Color Review

2. 1. Waxed paper and etched glass are
Transparent
Opaque
Translucent
Absorption

3. 2. When light is not reflected at all
Opaque
Reflection
Refraction
Absorption

4. 3. A material that does not allow any light to pass
Transparent
Opaque
Translucent
Absorption

5. 4. When you look at grass why does it look green?
Because green is reflected by the grass
Because green is a primary color
Because green is absorbed into the grass
Because green is a color in the spectrum

6. 5. A material that allows some light to pass
Transparent
Opaque
Translucent
Absorption

7. 6. When light is bounced off an object
Opaque
Reflection
Refraction
Absorption

8. 7. When light is bent by an object
Opaque
Reflection
Refraction
Absorption

9. 8. A material that allows all light to pass
Transparent
Opaque
Translucent
Absorption

10. 9. A wooden table, a concrete wall, and a book are all
Transparent
Opaque
Translucent
Absorption

11. 10a. A window, air, Mr. Marlow’s glasses are…
Transparent
Opaque
Translucent
Absorption

12. 10b. What do transparent materials allow?
Light to pass through with almost no disturbance
Light to be completely blocked
Light to be partially blocked
All of the above

13. 11. Which list of examples contains a translucent and an opaque object?
Eyeglass lenses and a pair of socks
A piece of waxed paper and a cardboard box
An overhead transparency and a crayon
A window and a baseball

14. Primary colors of pigment
12. red + blue = _______________
13. yellow + red = _______________
14. yellow + blue = _______________
15. red + blue + yellow = _______________

15. 16. Which of the following models shows the path the light ray would take when bounced off of a mirror? A B
Mirror
Mirror C D
Mirror
Mirror

16. 17. Which model below shows how light travels through a convex lens
17. Which model below shows how light travels through a convex lens? Explain your answer.

17. 18. Explain what happens to light when it enters a prism.

18. 19. What are the three primary colors of light? (3 pts)

19. 20. In the diagram below, the straw appears to be bent and separated, but the straw is normal (neither broken nor cut apart). Is this due to reflection or refraction? Explain your answer.

20. 21. When you look at an object through a concave lens, how does the image of the object change?

21. 22. Besides visible light, name two types of waves found on the electromagnetic spectrum. Then describe how each type of wave affects human life.

22. 23. When white light hits the green chalkboard, what happens to the red, green, and blue light that came from the white light?

23. Electromagnetic Spectrum
24. Using the word bank below, put the correct label in each box TV/FM Waves AM Radio Waves Gamma Rays Visible light X-Rays Microwaves Ultraviolet Waves Infrared Waves
Electromagnetic Spectrum
Wavelength
Longest Shortest
Frequency
Lowest Highest
A. B. C. D. E F G. H.

24. Answer Slide 1. C 2. D 3. B 4. A 5. C 6. B 7. C 8. A 9. B 10a. A
18. When light hits a prism, it refracts separating the light into the visible spectrum of light, ROYGBIV.
19. Red, green, and blue
9. B
10a. A
10b. A
11. B
12. violet
13. orange
14. green
15. brown
16. C
1. C
2. D
3. B
4. A
5. C
6. B
7. C
8. A
The straw appears to bend upward because light rays from the lower part of the straw change direction as they go from water into air. The bending of light rays as they pass from one substance into another is called refraction.
The image appears smaller, but always right side up.
See p. F19
The green light is reflected while the red and blue colors are absorbed.
Illustration B shows how light travels through a convex lens. Convex lenses form images by converging light rays together, not scattering them apart.