Chapter 12 Review Mr. Hauser. Rules of the Game Working in TEAMS, you will be asked to answer...
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Transcript of Chapter 12 Review Mr. Hauser. Rules of the Game Working in TEAMS, you will be asked to answer...
Chapter 12 Review
Mr. Hauser
Rules of the Game
• Working in TEAMS, you will be asked to answer questions from the assigned chapters.
• You have 30 seconds to write the answer down on the dry erase board.
• When the teacher says TIME’S UP, a team leader will stand up and show the teacher their answer.
Rules (Continued)
• Each correct answer is worth one point, unless otherwise stated.
• Teams can lose points for inappropriate conduct, comments, or cheating.
• The team with the most points at the end of the game wins!
Question 1
The very top part of a wave is called the ___________.
crest
Question 2
The distance between equilibrium and crest of a wave is called the ______.
A) frequencyB) wavelengthC) amplitudeD) periodE) speed
C) amplitude
Question 3
The distance from one point on a wave to the same point on the next consecutive wave is called __________.
A) frequencyB) wavelengthC) amplitudeD) periodE) speed
B) Wavelength
Question 4
The mathematical name for the shape of a wave is called a __________ wave.
sine
Question 5
Since sound cannot travel in a vacuum it is called a(n)…
A) mechanical wave
B) non-mechanical wave
C) transverse wave
D) Electromagnetic wave
A) Mechanical wave
Question 6What are the metric units used to
measure frequency?
Hertz
Question 7
The faster the sound moves through the air, …
A) the colder the air must be.
B) the warmer the air must be.
C) the dryer the air must be.
D) the higher frequency sound it must be.
B) the warmer the air must be
Question 8
What is the range of human hearing?
A. 5 Hz-5,000 HzB. 10 Hz - 10,000 HzC. 20 Hz - 20,000 HzD. 30 Hz - 30,000 HzE. 40 Hz - 40,000 Hz
C) 20 Hz - 20,000 Hz
Question 9
What is the type of wave that vibrates its medium perpendicular to its
direction of travel? Hint: light, x-rays, radio waves fall into this
category
Transverse waves
Question 10
What is the other name for a longitudinal wave?
Compression wave
Question 11
In a longitudinal wave the area between
compressions is called…
rarefaction
Question 12
What is the symbol used for wavelength?
Lambda ()
Question 13
Which two factors affect the speed of sound in air?
A) frequency and period
B) amplitude and wavelength
C) air temperature and humidity
D) wavelength and elasticity
C) Air temperature and humidity
Question 14The pitch of a sound depends on which of these?
A. wavelengthB. amplitudeC. intensityD. loudnessE. frequency
E) frequency
Question 15
Sound travels fastest in…A) solids.B) liquids.C) gases.D) a vacuum.
A) solids
Question 16
When a sound strikes a barrier and bounces back to
the listener he or she perceives an ________.
echo
Question 17When sound waves bend due to a difference
in air temperature it is called…A)reflectionB) reverberationC)echoingD)refraction
D) refraction
Question 18
Sound waves that are beyond the frequency range of human hearing are called _____________.
Ultrasonic
Question 19When one vibrating object makes contact
with another causing the second one to vibrate it has made…
A) an echo.B) reverberation.C) a forced vibration.D) the Doppler Effect.
C) Forced Vibration
Loudness of sound is measured in units called...
Question 20
Decibels
The special frequency an object has that depends on its elasticity and shape is
referred to as...
Question 21
Natural Frequency
When an object receives a sympathetic vibration from an outside source that matches its natural frequency and the object vibrates with a large amplitude
_____________ is occurring.
Question 22
Resonance
The Tacoma Narrows bridge that was resonated by the wind and literally shook
itself apart was located in what state?
Question 23
Washington
When two waves occupy the same space at the same time they __________ with one
another.
Question 24
Interfere
When two waves interfere that are in phase and the resulting wave that gets created has a larger amplitude __________ interfence has occured.
Question 25
Constructive
The apparent change in frequency of a wave due to the motion of a source or
observer is called…
Question 26
The Doppler Effect
If you can travel faster than the speed of sound,
observers would hear a ________ ________ after
you pass by.
Question 27
sonic boom
If you travel at twice the speed of sound, you are traveling at _______ 2.
Question 28
Mach
When an object is traveling close to the same speed as the waves it’s generating, the v-
shaped wave generated by the combination of all of the waves
from the object is called a…
Question 29
bow wave
An object such as an airplane moving toward you would
sound to you as…A) a higher pitch than it’s really making.
B) a lower pitch than it’s really making.
C) the same pitch that it’s making.
Question 30
A) a higher pitch than it’s really making
At night when the air close to the ground is cold and the air
up high is warm, sound waves are…
A) refracted down to the ground.B) refracted up toward the sky.C) not refracted at all.
Question 31
A) refracted down to the ground.
If a sound wave has a frequency of 340 Hz, what is its wavelength? (Hint:
you need to know the speed of sound in air)
Question 32
1 meter
What is the name of the point on a standing wave
that does not vibrate?
Question 33
node
If one singer sings at 85 decibels, how many
decibels would two singers produce?
Question 34
88 decibels
If you double your distance away from a source of sound you perceive its
intensity to be _____ its original value. (be exact)
Question 35
One forth
What are the metric units used to measure sound
intensity?
Question 36
W/m2
A sound that has a power of 4.4 x 10-3W has an intensity of 5.60 x 10-7W/m2 at what
distance?
Question 37
25 m
The sound quality that a listener perceives as
specific to a certain sound, voice, or instrument is
called…
Question 38
timbre
If a pipe opened at both ends is made longer, its frequency…
A)gets bigger.
B)gets smaller.
C)stays constant.
Question 39
B) Gets smaller
By tightening a guitar string, you effectively make the speed of a wave in that string faster. By doing so it would
produce a _________ pitch.
A) Higher
B) Lower
C) The same
Question 40
A) Higher
If the length of a pipe opened at both ends is decreased, its fundamental frequency…
A)increases.B)decreases.C)remains constant.
Question 41
A) increases
If the air inside a pipe closed at one end gets colder, its
fundamental frequency…A)decreases.B)increases.C)remains constant.
Question 42
A) decreases
What frequency is the second harmonic of a pipe opened at both ends that is 52 cm long? (The speed of sound in air is 343 m/s) Report the answer
in proper units
Question 43
660 Hz
FINAL QUESTION
What is the term for the rhythmic pattern generated from two similar frequencies interfering with one another.
beats