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Physics Sound and Light Review

Total questions: 61

Worksheet time: 15hrs 15mins

Name
Class
Date
1.
Material (matter) through which a wave travels
a)
medium
b)
Doppler Effect
c)
sound
d)
pitch
2.
travels through solids fastest because the molecules are closer together
a)
speed of sound
b)
wavelength
c)
frequency
d)
amplitude
3.
A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves
a)
longitudinal wave
b)
ocean wave
c)
transverse wave
d)
mechanical wave
4.
The part of a longitudinal wave where the particles of the medium are close together.
a)
rarefaction
b)
compression
c)
crest
d)
trough
5.
A part in a longitudinal wave where the particles are spread apart
a)
compression
b)
rarefaction
c)
crest
d)
trough
6.
A wave that requires a medium through which to travel
a)
mechanical wave
b)
chemical wave
c)
electromagnetic wave
d)
pitch
7.
If a wave is traveling at 260 m/s and has a wavelength of 0.8 m/s, what is its frequency?
a)
208 Hz
b)
325 Hz
c)
430 Hz
d)
160 Hz
8.

What property of this wave is represented by the letter "A"

a)

amplitude

b)

crest

c)

trough

d)

wavelength

9.

What property of the wave is represented by the letter "B"?

a)

amplitude

b)

crest

c)

trough

d)

wavelength

10.
The highest point on a wave is:
a)
the crest
b)
the trough
c)
the top
d)
the coast 
11.
The lowest point on a wave is the:
a)
Amplitude
b)
Crest
c)
Trough
d)
Wavelength
12.
The number of wavelengths that pass a point each per second is:
a)
frequency
b)
period
c)
longitudinal 
d)
transverse wave 
13.
Which letter(s) represent the trough of the wave?
a)
A
b)
B & D
c)
D
d)
C & G
14.
Which of the following can sound travel through?
a)
solid
b)
liquid
c)
gas
d)
all of the above
15.

Which material does sound travel the fastest?

a)

solid

b)

liquid

c)

gases

16.
The longer the _____________  the ______________ the frequency.
a)
wavelength, lower
b)
wavelength, higher
c)
amplitude, lower
d)
amplitude, higher
17.
The units for frequency are measured in _____________.
a)
hertz
b)
seconds
c)
m/s
d)
grams
18.

What is the approximate speed of sound at room temperature?

a)

331 m/s

b)

343 m/s

c)

360 m/s

d)

750 m/s

19.

What is the decibels of a sound with an intensity of 0.006 W/m^2?

a)

97.78 dB

b)

6 x 10^9 dB

c)

2.058 dB

d)

1.7 x 10^-5 dB

20.

If a sound was made at 120 dB, then what is the intensity of the sound? _____W/m^2

a)

0

b)

120

c)

1

d)

0.349

21.

The threshold of hearing is 1.0 x 10^-12 W/m^2, what is the decibel level of this intensity?

a)

1 dB

b)

120 dB

c)

0 dB

d)

-1 dB

22.

Given the loudness of the juniors at a pep rally is 20 dB, what is the intensity of the sound of the juniors?

a)

2 x 10^13 W/m^2

b)

100 W/m^2

c)

1.0 x 10^-10 W/m^2

d)

Cannot be determined

23.

The harmonics which are present in a pipe ,open at one end are

a)

odd harmonics

b)

even harmonics

c)

even as well as odd harmonics

d)

no harmonics

24.

A 1.5 m string is vibrating at its fundamental frequency of 440 Hz. What is the speed of the standing wave on the string? (treat as open pipe)

a)
147 m/s
b)
293 m/s
c)
660 m/s
d)
1320 m/s
25.

An open pipe of length 50.0 m has standing waves formed in it. What is the fundamental frequency of the waves?

a)

0.583 Hz

b)

0.291 Hz

c)

3,43 Hz

d)

1.715 Hz

26.

An closed pipe of length 50.0 m has standing waves formed in it. What is the fundamental frequency of the waves?

a)

0.583 Hz

b)

0.291 Hz

c)

3,43 Hz

d)

1.715 Hz

27.

The second harmonic of a guitar string has a frequency of 60 Hz. If the speed of waves on the string is 120 m/s, what is the string’s length? Treat as an open pipe

a)

1.0 m

b)

2.0 m

c)

3.0 m

d)

4.0 m

28.

A lightyear is:

a)

How much light the Sun gives off in one year.

b)

A year in which very little happens.

c)

The time it take light to travel the distance from the Sun to the Earth.

d)

The distance light travels in one year.

29.

The speed of light is:

a)

300,000 km/sec

b)

343 m/s

c)

3.00e10 m/s

d)

3,000,000 m/s

30.

Which electromagnetic wave has the highest ENERGY?

a)

Sound

b)

Microwaves

c)

X Rays

d)

Gamma radiation

31.

Different colors of light correspond to different light:

a)

Wavelengths

b)

Intensities

c)

Amplitudes

d)

Velocities

32.
An image that you can see when you look into a mirror, but does not really exist is called which of the following?
a)
Real Image
b)
Fake Image
c)
Virtual Image
d)
Digital Image
33.
The following is a picture of what type of mirror? 
a)
Convex (diverging) mirror
b)
Concave (converging) mirror
c)
Plane Mirror
d)
Flat Mirror
34.
The following is a picture of what type of mirror? 
a)
Convex (diverging) Mirror
b)
Concave (converging) Mirror
c)
Plane Mirror
d)
Flat Mirror
35.
This is an example of a __________ mirror.
a)
Concave
b)
Convex
c)
Plane
d)
Magnifying
36.
What kind of mirror is shown here?
a)
plane
b)
concave
c)
convex
d)
diffuse
37.
Convex Mirrors produce...
a)
only virtual images
b)
virtual or real images
c)
only real images
d)
inverted images
38.

A dentist uses a small dental mirror to help magnify teeth in your mouth. What type of mirror is this?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

39.
a real image...
a)
is produced by virtual rays and can be projected on a screen
b)
is produced by real rays and cannot be projected on a screen
c)
is produced by virtual images and cannot be projected on a screen
d)
is produced by real rays and can be projected on a screen
40.
What type of lens do humans have in their eyes? 
a)
Concave Lens 
b)
Convex Lens 
41.

An object is located 35.0 cm from a diverging lens. The lens forms an image at a distance of 15.0 cm. What is the focal length?

a)

26.25 cm

b)

10.5 cm

c)

-26.25 cm

d)

-10.5 cm

42.
The focal length of the lens in your eye is about 0.015 m. If the object is 1 m from your eye, where is the image produced? 
a)
0.0315 m
b)
0.0243 m
c)
0.0152 m
d)
0.0601 m
43.
A normal human eye has a focal length of about 0.023 m. If you look at the tip of a pencil, 0.553 m from your eye, how far is the image from the lens of your eye? 
a)
0.024 m
b)
0.033 m
c)
0.045
d)
0.055
44.

An object is located 35.0 cm from a converging lens. The lens forms a real image at a distance of 15.0 cm. What is the focal length?

a)

0.0953 cm

b)

10.5 cm

c)

26.2 cm

d)

0.0678 cm

45.

the bending of light

a)

refraction

b)

reflection

c)

absorption

d)

transparent

46.
A _______ breaks white light into colors.
a)
prism
b)
visible spectrum
c)
shadow
d)
lens
47.
Light travels in ____ lines called waves.
a)
straight
b)
curvy
48.
A ___ lens makes objects appear bigger.
a)
concave
b)
convex
c)
prism
d)
flat
49.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
50.
Light bending as it passes through a rain drop is an example of...
a)
Refraction
b)
Reflection
51.

When will total internal reflection occur?

a)

When light travels from a less dense to a more dense medium

b)

When the angle of incidence is smaller than the critical angle

c)

When the angle of incidence is greater than the critical angle

d)

When the light cannot pass through a medium

52.

The focal length of this lens is _______.

a)

negative because it can form real images

b)

positive because it can form real images

c)

negative because it can form virtual images

d)

could be positive or negative depending on the image formed

53.

A person standing in front of a lens creates an image that is both smaller than the original and closer to the lens. Classify the image formed in this scenario.

a)

real, inverted

b)

real, upright

c)

virtual, inverted

d)

virtual, upright

54.

Classify the image formed in this scenario.

a)

real, inverted, larger than original

b)

real, inverted, smaller than original

c)

virtual, upright, larger than original

d)

virtual, upright, smaller than original

55.

If light travels from a higher to a lower index of refraction medium the light will

a)

bend away from the vertical axis or may not refract

b)

bend closer to the vertical axis

c)

not bend

d)

answer is not here

56.

If light travels from a lower to a higher index of refraction medium the light will

a)

bend away from the vertical axis

b)

bend closer to the vertical axis

c)

not bend

d)

answer is not here

57.

Light travels from air (n = 1.00) into a second material. The incident ray of light hits the surface at angle of 64o and the refracted ray enters the second material at an angle of 32o. What is the index of refraction of the second material? n1sin(Θ1) = n2sin(Θ2)

a)

1.4

b)

0.90

c)

0.53

d)

1.7

58.

If a material has an index of refraction of 2.3, how fast will light travel through that material?

a)

2.3 x 108 m/s

b)

6.9 x 108 m/s

c)

3.0 x 108 m/s

d)

1.3 x 108 m/s

59.

What is the speed of light in a material that has an index of refraction of 1.88?

a)

3.0 x 108 m/s

b)

1.88 x 108 m/s

c)

1.6 x 108 m/s

d)

5.64 x 108 m/s

60.

What is the speed of light in a vacuum?

a)

3.0 x 108 m/s

b)

1.0 x 108 m/s

c)

10 m/s

d)

5.0 x 108 m/s

61.

There are certain angles of incidence for which the angle of refraction is close to 90°. What is this angle called?

a)

Total internal angle

b)

Critical angle

c)

Reflection angle

d)

Refracted angle

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