Answers26-27 IC Physics 7614BWave Properties

Wave Interactions Answers

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What is the purpose of a rearview mirror in a car?

A
The mirror allows the light to be absorbed so the driver will not see any glare.
B
The mirror allows the light to interfere so the light waves combine to form an image.
C
The mirror allows the light to be reflected so the objects behind the car can be seen.
D
The mirror allows the light to be transmitted so the light will not reach the driver's eyes.
2
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Consider this image of a wave.

Question illustration
A
A graph with time in second on the x axis from 0 to 8 and amplitude on the y axis from 2 to 2. The wave starts at the origin and the trough goes up to .8, back down through .75 s and all the way down to 2 before going back up to 2 on the other side of the x axis. It is a repeated pattern with on trough and 3 crests with different amplitude.
Option A
B
A graph with time in second on the x axis from 0 to 8 and amplitude on the y axis from 2 to 2. The wave starts at the origin and the trough goes down to 2, back up through 1 s and all the way up to .7 before going back down to .2 on the other side of the x axis. It is a repeated pattern with on trough and 3 crests with different amplitude.
Option B
C
A graph with time in second on the x axis from 0 to 8 and amplitude on the y axis from 2 to 2. The wave starts at the origin and the trough goes down to .6, back up through 1s and all the way up to .6 before going back down to .4 on the other side of the x axis. It is a repeated pattern with on trough and 3 crests with different amplitude.
Option C
D
A graph with time in second on the x axis from 0 to 8 and amplitude on the y axis from 2 to 2. The wave starts at the origin and the trough goes down to 2, back up through 1s and all the way up to .7 before going back down to .2 on the other side of the x axis. Then back up to .3 on the other side of the x axis. The pattern repeats itself but flipped on the x axis
Option D
3

The appearance of color is a result of the absorption and reflection of certain wavelengths of light. A shirt appears a certain color because it reflects that color of light. On the other hand, a shirt appears black when it absorbs all wavelengths of light and white when it reflects all wavelengths of light.

A
The temperature of the shirt will depend on how much sunlight is diffracted around the shirt.
B
The temperature of the shirt will not change because the sunlight is transmitted through the shirt to the body.
C
The temperature of the shirt will decrease because most of the light is reflected off of the shirt.
D
The temperature of the shirt will increase because all wavelengths of light are absorbed by the shirt.
4

Which is the best example of the wave phenomenon called transmission?

A
A street is seen through a window.
B
Sound is heard around an open doorway.
C
A coin seems smaller at the bottom of a swimming pool.
D
An image of a tree is seen is on the surface of a smooth lake.
5

The image shows water passing through a barrier.

Question illustration
A
absorption
B
diffraction
C
reflection
D
refraction
6

When two waves are in sync with each other and occupy the same place at the same time, how is the resulting wave determined?

A
by averaging the wavelengths of the two waves
B
by dividing the frequencies of the two waves
C
by multiplying the velocities of the two waves
D
by adding the amplitude of the two waves
7

[BLANK]

A
absorption
B
diffraction
C
reflection
D
refraction
8

What best describes the refraction of light rays?

A
light bouncing off of a mirror
B
light bending when it passes through a lens
C
light getting brighter when two waves combine
D
light passing through a clear glass window
9

Rohit is trying to tune an instrument. He strikes a tuning fork and then plays a note that almost matches it. Rohit hears the volume of the two waves beating, which sounds like "wah-wah-wah-wah."

A
The two waves produced have different speeds.
B
The two waves produced have different amplitudes.
C
The two waves produced have different wavelengths.
D
The two waves produced have different frequencies.
10

If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able to hear sound from the room while standing by the wall to the side of the opening?

A
absorption
B
diffraction
C
reflection
D
refraction

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Wave Interactions Answers — 26-27 IC Physics…