Name: ________
KEY ________
Section: __________
Date: __________
Wave Review
Wave Characteristics: Label each of the following wave characteristics in the space
below
B
C
A
E
F
D
G
Resting Location
WAVELEGTH
D ____________________
PEAK
B ____________________
AMPLITUDE
E ____________________
WAVELENGTH
C ____________________
AMPLITUDE
F ____________________
A
TROUGH
G ___________________
Making Waves: For each situation, identify the source of energy producing the wave
and the medium through which the wave is traveling.
1.
Source of Energy:
Rock
falling
into
water
ROCK
Medium:
WATER
2.
Source of Energy:
Drum surface
Medium:
air
3.
Source of Energy:
SUN
Medium:
Vacuum
4.
Source of Energy:
Microwave oven
Medium:
A vacuum
5.
Source of Energy:
Guitar string
Medium:
Air
6.
Source of Energy:
Wind
Medium:
Water
Determining Frequency: Determine the frequency of each wave
2
7. Frequency = _____________
Hertz
0
1
2
time (s)
1
2
time (s)
1
2
time (s)
1
8. Frequency = _____________ Hertz
0
4
9. Frequency = _____________
Hertz
0
Determining Wavelength: Use a ruler to determine the wavelength of each wave.
10. Wavelength = _____________ cm
11. Wavelength = _____________ cm
12. Wavelength = _____________ cm
Multiple Choice Review
1. Which of the following is the best example of a wave?
A. a stone rolling downhill
B. a vehicle traveling on a bumpy road
C. a string vibrating on a guitar
D. a grasshopper jumping up and down occasionally.
2. The diagram below shows a wave trace.
Distance Z is a measure of
A. amplitude.
B. frequency.
C. wavelength.
D. wave speed.
3. The illustration below shows three toy ducks floating on water, moving up and down as a
wave travels to the right with a velocity of 3 m/s. .
Which of the following is the frequency of the wave?
A. 0.75 Hz
B. 1.33 Hz
C. 1.5 Hz
D. 6.0 Hz
4. The figure below shows a spring with a wave traveling through it.
Which type of wave is illustrated?
A. sound
B. transverse
C. longitudinal
D. electromagnetic
5. What is the frequency of ocean waves that have a speed of 18 m/s and a wavelength of 50 m?
A. 0.18 Hz
B. 0.36 Hz
C. 2.8 Hz
D. 9.0 Hz
6. The diagram below represents a mass suspended vertically by a rubber band. The mass is set
in motion by pulling down slightly on the mass and letting go.
Which of the following correctly identifies the up-and-down motion of the mass?
A. torsional
B. transverse
C. nonharmonic
D. simple harmonic
7. Each of the following illustrations shows the movement of a 1 kg object. Which of these is an
example of simple harmonic motion?
8. An organ pipe produces a musical note with a wavelength of 2.72 m. What is the frequency of
this note if the speed of sound is 348 m/s?
A. 85.7 Hz
B. 128 Hz
C. 260 Hz
D. 466 Hz
9. Which of the following best describes the relationship between frequency and wavelength of
electromagnetic waves?
A. If the frequency remains constant, the wavelength increases.
B. The wavelength decreases as the frequency decreases.
C. The frequency increases as the wavelength decreases.
D. If the wavelength remains constant, the frequency increases.
10. Five bowling balls are lined up touching one another on a smooth surface. Striking the first
ball with a hammer makes the fifth ball move away from the group. The force of the hammer
was transmitted through the line of balls as what type of wave?
A. electromagnetic
B. heat
C. longitudinal
D. transverse
= 50 Hz
λ = 10 m
?
v=λ/f
v = (10 m)/(50 Hz)
11. What causes
v =sound?
0.2 m/s
A. sunlight
B. vibrations
C. x-rays
D. pitch
f?
λ=2m
v = 5 m/s
12. Sound reaches our ears because sound makes air particles
A. heat up.
f= v/λ
B. cool down.
C. slow down. f = (5 m/s)/(2 m)
D. vibrate.
v = 2.5 m/s
Wave Speed Equation Practice
1. A wave has a frequency of 50 Hz and a wavelength of 10m. What is the speed of the
wave?
2. The speed of a wave is 5m/s. Its wavelength is 2m. What is the frequency of the wave?
a.
b.
Claim: “P” waves reach point A first.
Evidence: We are told that “P” waves travel faster.
Reasoning: When a wave travels faster, it travels the same distance in less time.
OPEN RESPONSE:
BE SURE TO ANSWER AND LABEL ALL PARTS OF THE QUESTION.
Claim: The ground will move back and forth when a “P” waves passes through.
Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.
Evidence: We are told that “P” waves are longitudinal waves.
If you do the work in your head, explain in writing how you did the work.
Reasoning: Longitudinal waves are defined as – waves in which the medium moves
parallel
thebelow
samerepresents
direction)the
asarea
the near
wavethe
is traveling.
the wave travels from
The(in
map
origin of anIfearthquake.
the origin to point A, the ground will move back and forth between those two
locations.
c.
Claim: The ground will not move when an “S” wave reaches point A.
Evidence: We are told “S” waves are transverse waves and we can also see in the
picture that there is a lake between point A and the origin of the earthquake.
Reasoning: Transverse waves can only travel through a solid medium (like the
ground); they cannot travel through a liquid (like the lake).
Earthquakes generate several different kinds of waves. Longitudinal waves are called “P” waves,
and transverse waves are called “S” waves. The “P” waves have a greater velocity than the “S”
waves. An earthquake occurs and these waves travel to point A.
a. Which type of wave is first to reach point A?
b. Describe the expected movement of the ground due to the “P” waves and explain your
reasoning.
c. Describe the expected movement of the ground when the “S” waves reach point A, and
explain your reasoning.