WorksheetsWaves Exam Review
Total questions: 55
Worksheet time: 2hrs 7mins
Which number represents the wavelength of the wave?
1
2
3
4
How many complete waves are pictured?
1
2
4
8
A ___________ is a back and forth movement of something?
Wave
Vibration
Frequency
Pitch
What happens when we hear an echo?
We know there is danger
there must be someone yelling back to us
Sound is reflected off a surface and repeated back
Which number represents the amplitude of the wave?
1
2
3
4
Which number represents the crest of the wave?
1
2
3
4
This is an example of a sound wave coming from your phone. If you increase the volume then ____________.
1 becomes shorter
1 becomes longer
3 becomes smaller
3 becomes larger
You throw a rock into the middle of the pond. Waves move outward toward the shore.
Energy and water particles move toward the shore.
Only energy moves towards the shore.
Only water particles move toward the shore.
If a wave encounters a frictional force then ___________.
its energy will increase and the wave becomes larger.
its energy will decrease and the wave becomes larger.
its energy will increase and the wave becomes smaller.
its energy will decrease and the wave becomes smaller.
How do we hear the sound Olivia makes from across the classroom?
Air molecules travel from her mouth to our ear.
Air molecules travel from our ear to her mouth.
Air molecules collide in the room transferring energy to our ear.
Lightning strikes can also cause vibration of air molecules known as thunder. Why do we see lightning before hearing thunder?
Light waves travel faster than sound waves.
Sound waves travel faster than light waves.
Thunder shakes the sky making lightning.
What will happen as Pulse A and Pulse B come together?
Destructive; larger amplitude
Constructive; larger amplitude
Destructive; smaller amplitude
Constructive; smaller amplitude
What is the frequency of a wave with a length of 5 m and a velocity of 100 m/s?
500 Hz
0.05 Hz
20 Hz
105 Hz
What is the velocity of a wave with a length of 5 m and a frequency of 200 Hz?
1000 m/s
40 m/s
0.025 m/s
205 m/s
What is the length of a wave with a frequency of 250 Hz and a velocity of 100 m/s?
350 m
2.5 m
0.4 m
25000 m
An antenna vibrates 20 times in one second. It has a frequency of ______________.
20 Hz
20 s
0.05 Hz
0.05 s
An antenna vibrates 20 times in one second. It has a period of ______________.
20 Hz
20 s
0.05 Hz
0.05 s
What is the result of the pulse reaching the boundary?
What is the result of the pulse reaching the boundary?
Identify the node(s) of the standing wave.
B
C
D
A, C & E
If you increased the frequency of the string vibration then
the wave speed will increase.
the wave speed will decrease.
the wave speed will remain the same.
If you increased the frequency of the string vibration then
the wavelength will increase.
the wavelength will decrease.
the wavelength will remain the same.
Which harmonic of the guitar string is shown?
1st
2nd
3rd
4th
5th
What kind of wave moves perpendicular to its motion?
longitudinal
standing
transverse
tidal
Crests are to ________ as troughs are to __________.
amplitude; frequency
wavelength; frequency
compressions; rarefactions
wavelength; amplitude
toothpaste; teeth
The pitch of a sound wave relates to the wave's _________________.
Amplitude
Frequency
Wavelength
Period
What is the Doppler Effect?
A change in frequency due to the relative motion of a wave source and an observer
When a wave overlaps with another wave
When a wave bounces off of another object
When a wave bends due to traveling through a different medium
What is the Doppler Effect?
A change in frequency observed due to the relative motion of a source or observer.
When a wave overlaps with another wave
The source's frequency changes as it moves close to you.
A change in amplitude as an object moves closer to you
You are driving in a car and honk the horn at a person standing in the street. As you approach the person, what happens to the pitch of the horn according to you in the car?
It increases
It decreases
It stays the same because you are in the car moving with the sound.
Look at the picture. Who is experiencing a higher pitched sound?
Observer A
Observer B
There's no difference
If the string is 0.50 m in length, then what is the wavelength (m) pictured?
0..17
0.33
0.50
0.67
1.00
The TOTAL string length pictured is 2 meters in length. What is the SIZE of a SINGLE (1) wavelength?
1 meter
0.5 meters
4 meters
8 meters
Which of the following is not an example of harmonic motion?
a ball rolling down a hill
the movement of a jackhammer breaking concrete
a swinging pendulum
waves in a pond spreading outward from a dropped stone
The position of an oscillating mass is graphed here as a function of time. Which quantity is changing as time passes?
period
frequency
amplitude
none of these
Natural frequency is best described as
the frequency at which an object naturally vibrates at when it is disturbed
a vibration that can be heard in the wild
the radio frequency that astronauts naturally use when travelling into space
the material used to make a swing
A 50 dB sound is _______ than a 30 dB sound.
20 x louder
100 x louder
20 x quieter
100 x quieter
How does sound intensity change if you double the distance you are from the source of the sound?
2 x louder
4 x louder
2 x quieter
4 x quieter
Two sound sources S1 and S2 produce waves with frequencies 500 Hz and 250 Hz. When we compare the speed of wave 1 to the speed of wave 2 the result is:
Twice as great
One-half as great
The same
It cannot be determined with the given information.
A sound wave resonates in a tube with two open ends. What are the wavelengths of the three lowest resonating frequencies generated in the tube?
L, 2L, 3L
2L, L, 2L/3
L/2, L/3, L/5
4L, 4L/3, 4L/5
Two sound sources generate pure tones of 70 Hz and 80 Hz. What is the beat frequency?
75 Hz
10 Hz
150 Hz
0.125 Hz
The speed of sound in air is approximately
140 m/s
340 m/s
1000 m/s
300,000,000 m/s
Assuming the speed of sound is 340 m/s, what is the most likely speed of the jet shown below?
200 m/s
500 m/s
100 m/s
340 m/s
A car moves at 20 m/s towards a whistle. The whistle is stationary. The whistle makes a sound with a frequency of 500 Hz. The speed of sound in air is 330 m/s.
What is the frequency observed by the driver of the car?
530 Hz
470 Hz
520 Hz
480 Hz
A car moves at 20 m/s away from a whistle. The whistle is stationary. The whistle makes a sound with a frequency of 500 Hz. The speed of sound in air is 330 m/s.
What is the frequency observed by the driver of the car?
530 Hz
470 Hz
520 Hz
480 Hz
Which would have the longest period?
Pendulum A: A 200-g mass attached to a 1.0-m length string
Pendulum B: A 400-g mass attached to a 0.5-m length string
A
B
Same
Which of the following affects the period of a pendulum?
mass
length of the string
tension of the string
shape of the mass on the string
Which engineering concept was poorly understood and contributed to the Tacoma Narrows Bridge collapse?
Resonance
Compression
Torsion
Shear force
What was the primary cause of the Tacoma Narrows Bridge collapse?
Earthquake
Poor construction materials
Strong winds
Heavy traffic
Which of the following was a contributing factor to the Tacoma Narrows Bridge collapse?
Strong wind-induced vibrations
Poor foundation
Excessive vehicle load
Inadequate maintenance
