Chapter 10 Waves

Question 1

A wave where the medium is displaced parallel to the direction the wave travels.

Answer 1

Longitudinal wave

Question 2

The maximum distance that a particle moves from its resting position when a traveling wave passes through it.

Answer 2

Amplitude

Question 3

The rate that a single wave peak travels in a medium.

Answer 3

Wave speed

Question 4

A wave’s ability to bend around corners and spread behind holes

Answer 4

Diffraction

Question 5

A place in a medium where a molecule naturally resides.

Answer 5

Equilibrium position

Question 6

The change in speed and direction as a wave moves from one medium into another.

Answer 6

Refraction

Question 7

The result of confined waves interfering in such a way that destructive and constructive interference always occur in a fixed location.

Answer 7

Standing Wave

Question 8

Occurs when two or more waves travel through the same medium at the same time.

Answer 8

Interference

Question 9

The distance between successive similar parts in repeating waves.

Answer 9

Wavelength

Question 10

The act of bouncing off the boundary between two different mediums.

Answer 10

Reflection

Question 11

A fixed position of destructive interference in a standing wave.

Answer 11

Node

Question 12

Wave where the forces stretch the bonds between molecules in a direction that is perpendicular to the direction the wave travels.

Answer 12

Frequency

Question 13

The number of wave crests passing a particular point every second.

Answer 13

Antinode

Question 14

A fixed position of constructive interference in a standing wave.

Answer 14

Transverse wave

Question 15

Compression waves travel through all different states of matter.

Answer 15

true

Question 16

Musical instruments use standing waves to produce sound.

Answer 16

true

Question 17

Waves cause the medium they travel through to change from its equilibrium shape.

Answer 17

true

Question 18

Doppler shift measures the absolute speed of the sender.

Answer 18

false

Question 19

The major determinants in wave speed are the wave’s frequency and amplitude.

Answer 19

false

Question 20

Standing waves occur any time two waves interfere with each other.

Answer 20

false

Question 21

Which of the following is an example of refraction?
A- An echo that bounces off a nearby wall.
B- Constructive interference occurring between waves in a lake.
C- Sound from a T.V. in a nearby room that passes through the walls. (correct)
D- Eyeglasses correcting a person’s vision.

Answer 21

Sound from a T.V. in a nearby room that passes through the walls.

Question 22

Which of the following is a shear wave?
A- A rope pulled tight and plucked
B-Human speech
C- The sound from a car horn
D- A wave traveling towards the shore of a lake

Answer 22

Both A and D

Question 23

What necessarily decreases if you increase wavelength of a sound wave?

Answer 23

frequency

Question 24

What happens to the sound emitted from a radio as it moves away from you?

Answer 24

Its wavelength would increase.

Question 25

Locations in an auditorium where sound becomes soft or muffled could be palces of

Answer 25

destructive interference

Question 26

If you double the frequency of a soundwave

Answer 26

the speed of the wave stays the same

Question 27

The amplitude of a sound wave is a physical quantity that determines the

Answer 27

pitch

Question 28

If the spectrum of a star is studied, and the frequencies are shifted towards the blue, what can you conclude about that star?

Answer 28

It is moving towards the Earth