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Name: ________________________ Class: ___________________ Date: __________
ID: B
Test: EM Spectrum, Light, Mirrors, and Lenses - Study Guide
Matching
Match the letter of the lens or the mirror shown in Figure 14-1 with each of the following descriptions.
Figure 14-1
____
1. convex lens
____
2. convex mirror
____
3. produces an upright, reversed image
____
4. reflects and spreads out light
____
5. refracts and spreads out light
____
6. concave mirror
____
7. concave lens
____
8. plane mirror
Short Answer
9. How are sound waves and radio waves the same? How are they different?
10. Even though light rays reflect off a brick wall, why can’t you see your reflection?
11. Define Opaque and Transparent. How are they different?
12. What is refraction?
13. As the wavelength of an electromagnetic wave increases, how are the frequency, amplitude, and speed
affected?
1
Name: ________________________
ID: B
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 14. The electromagnetic waves with wavelengths slightly longer than visible light are ____.
a. microwaves
c. infrared waves
b. ultraviolet waves
d. X rays
____ 15. If light waves change speed when they pass from one medium into another, the light will be ____.
a. refracted
c. separated
b. reflected
d. diffused
____ 16. Any smooth surface that reflects light to form an image is a(n) ____.
a. lens
c. microscope
b. mirror
d. telescope
____ 17. The bowl of a shiny spoon forms an enlarged, upright image similar to that of a ____ mirror.
a. refracting
c. wide-angle
b. convex
d. concave
____ 18. Reflection of light waves from a smooth surface is ____.
a. mirror reflection
c. irregular reflection
b. regular reflection
d. diffuse reflection
____ 19. Electromagnetic radiation with the shortest wavelengths is ____.
a. infrared waves
c. ultraviolet waves
b. gamma rays
d. radio waves
____ 20. An image of a distant object produced by the refraction of light through air layers of different densities is
____.
a. a ghost image
c. incoherent
b. coherent
d. a mirage
____ 21. ____ are thick in the middle and thin at the edges.
a. Concave lenses
c.
b. Concave mirrors
d.
Plane mirrors
Convex lenses
____ 22. ____ are used for medical imaging.
a. Ultraviolet waves
b. Radio Waves
X rays
Infrared waves
c.
d.
____ 23. Light rays that hit a convex mirror ____ as they are reflected.
a. magnify
c. disappear
b. diverge
d. unite
____ 24. Light is refracted and spread out by a ____.
a. concave lens
b. concave mirror
c.
d.
convex lens
convex mirror
____ 25. Outside rear-view mirrors on automobiles are generally ____.
a. convex
c. concave
b. plane
d. all of the above
2
Name: ________________________
ID: B
____ 26. Which of these is not true about a real image?
a. It can be projected onto a screen.
c.
b. It is inverted.
d.
It is enlarged.
It appears behind the mirror.
____ 27. The image formed by a plane mirror is ____.
a. real and reversed
b. upright and reversed
real and upright
virtual and inverted
c.
d.
____ 28. The frequency of purple light is ____ that of yellow light.
a. higher than
c. lower than
b. faster than
d. the same as
____ 29. What natural phenomenon of light allows us to see a blue sky during the day and a red/orange sky during
sunrise and sunset?
a. absorbtion
c. reflection
b. scattering
d. diffracting
____ 30. Your body needs ____ to make vitamin D.
a. infrared waves
b. microwaves
c.
d.
3
ultraviolet waves
visible light waves
ID: B
Test: EM Spectrum, Light, Mirrors, and Lenses - Study Guide
Answer Section
MATCHING
1. ANS:
STA:
2. ANS:
STA:
3. ANS:
STA:
4. ANS:
STA:
5. ANS:
STA:
6. ANS:
STA:
7. ANS:
STA:
8. ANS:
STA:
D
P4.8A | P4.8B
A
P4.8A | P4.8B
C
P4.8A | P4.8B
A
P4.8A | P4.8B
B
P4.8A | P4.8B
E
P4.8A | P4.8B
B
P4.8A | P4.8B
C
P4.8A | P4.8B
PTS: 1
DIF:
DOK 1
OBJ: 4-2
PTS: 1
DIF:
DOK 1
OBJ: 3-1
PTS: 1
DIF:
DOK 1
OBJ: 1-1
PTS: 1
DIF:
DOK 1
OBJ: 1-1
PTS: 1
DIF:
DOK 1
OBJ: 5-2
PTS: 1
DIF:
DOK 1
OBJ: 3-1
PTS: 1
DIF:
DOK 1
OBJ: 4-2
PTS: 1
DIF:
DOK 1
OBJ: 3-1
SHORT ANSWER
9. ANS:
Both are waves created by vibrations; both experience diffraction, refraction, and interference. Sound waves
are compressional waves and require a medium. Radio waves are transverse waves and require no medium.
PTS: 1
DIF: DOK 2
OBJ: 7-3
10. ANS:
surface is rough, scatters the reflected light in many directions
STA: P4.4B
PTS: 1
DIF: DOK 2
OBJ: 2-1
STA: P4.8B
11. ANS:
opaque—does not allow any light through, brick wall; tranparent—light can pass through easily. Opaque and
transparent are opposites.
PTS: 1
DIF: DOK 2
OBJ: 1-1
STA: P4.9B
12. ANS:
It is the bending of light as it changes speed through different mediums.
PTS: 1
DIF:
DOK 2
OBJ: 3-1
1
STA: P4.8A
ID: B
13. ANS:
The frequency decreases; the amplitude and speed are not affected.
PTS: 1
DIF:
DOK 3
OBJ: 2-1
STA: P4.4d | P4.6A
PTS: 1
DIF:
DOK 2
OBJ: 4-2
PTS: 1
DIF:
DOK 2
OBJ: 4-1
PTS: 1
DIF:
DOK 1
OBJ: 1-1
PTS: 1
DIF:
DOK 2
OBJ: 3-1
PTS: 1
DIF:
DOK 1
OBJ: 2-1
PTS: 1
DIF:
DOK 2
OBJ: 4-2
PTS: 1
DIF:
DOK 1
OBJ: 3-1
PTS: 1
DIF:
DOK 2
OBJ: 4-2
PTS: 1
DIF:
DOK 2
OBJ: 4-2
PTS: 1
DIF:
DOK 2
OBJ: 1-1
PTS: 1
DIF:
DOK 2
OBJ: 4-2
PTS: 1
DIF:
DOK 2
OBJ: 3-1
PTS: 1
DIF:
DOK 2
OBJ: 2-1
PTS: 1
DIF:
DOK 1
OBJ: 1-1
PTS: 1
DIF:
DOK 2
OBJ: 4-2
PTS: 1
PTS: 1
DIF:
DOK 2
OBJ: 4-2
MULTIPLE CHOICE
14. ANS:
STA:
15. ANS:
STA:
16. ANS:
STA:
17. ANS:
STA:
18. ANS:
STA:
19. ANS:
STA:
20. ANS:
STA:
21. ANS:
STA:
22. ANS:
STA:
23. ANS:
STA:
24. ANS:
STA:
25. ANS:
STA:
26. ANS:
STA:
27. ANS:
STA:
28. ANS:
STA:
29. ANS:
30. ANS:
STA:
C
P4.6A
A
P4.9A
B
P4.8B
D
P4.8B
B
P4.8B
B
P4.6A
D
P4.8A | P4.9B
D
P4.8B
C
P4.6h
B
P4.8B
A
P4.8B | P4.8f
A
P4.8B
D
P4.8B
B
P4.8B
A
P4.6A
B
C
B2.3f
2
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