Answers26-27 IC Physics 7614BWave Properties

Wave Properties Answers

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The diagram represents wavelengths of different colors of visible light that pass by in a specific time period.

Question illustration
A
red
B
yellow
C
blue
D
violet
2
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The speed of sound in ice, water, and steam is shown.

Question illustration
A
Sound travels fastest in ice because energy is easier to transfer when the molecules are close together.
B
Sound travels slowest in steam because the sound has to move around the gas molecules that are far apart.
C
Sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy.
D
Sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.
3

A flute plays a note with a frequency of 266 Hz. What is the speed of sound if the wavelength is 1.3 m?

A
102 m/s
B
205 m/s
C
346 m/s
D
692 m/s
4

The ______ is the time it takes for a wave to complete one cycle.

A
trough
B
period
C
frequency
D
hertz
5

Study the diagram.

Question illustration
A
A: crestB: amplitudeC: wavelengthD: trough
B
A: troughB: amplitudeC: crestD: wavelength
C
A: troughB: amplitudeC: wavelength D: crest
D
A: crestB: amplitude C: trough D: wavelength
6

Which equations represent the relationship between wavelength and frequency for a sound wave? Check all that apply.v = f = vff = v = = f = f =

Question illustration
A
v = f
Option A
B
= vf
Option B
C
f = v
Option C
D
=
Option D
E
=
Option E
F
f =
Option F
G
f =
Option G
7

What best describes the relationship between wavelength and frequency in an electromagnetic wave?

A
always equal
B
no relationship
C
directly proportional
D
inversely proportional
8

A wave is produced in a rope. The wave has a speed of 33 m/s and a frequency of 22 Hz.

A
0.67 m
B
0.75 m
C
1.5 m
D
3.0 m
9

All parts of the electromagnetic spectrum travel at a speed of 3 × 108 m/s when traveling through no medium. A "vacuum” means that there is no medium, such as a tube without any air in it. Therefore, 3 × 108 m/s is said to be the speed of light in a vacuum.

A
Wavelength doubles and speed doubles.
B
Wavelength doubles and speed stays the same.
C
Wavelength divides in half and speed doubles.
D
Wavelength divides in half and speed stays the same.

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Wave Properties Answers — 26-27 IC Physics 7614B