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Waves & Sound. 10. 20. 30. 40. 50. Waves & Motion. 10. 20. 30. 40. 50. Sound. 10. 20. 30. 40. 50. Frequency. 10. 20. 30. 40. 50. Sound & Speed. 10. 20. 30. 40. 50. Category 1 questions follow. Category 1. 10. - PowerPoint PPT Presentation
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Waves & Sound
10
20
30
40
50
Waves & Motion
10
20
30
40
50
Sound
10
20
30
40
50
Frequency
10
20
30
40
50
Sound & Speed
10
20
30
40
50
Category 1 questions follow
Questio
nWhen energy is transferred by a wave from a vibrating source to a distant receiver, there is no transfer of ____________ between the two points
10
Category 1
Answ
er
When energy is transferred by a wave from a vibrating source to a distant receiver, there is no transfer of matter between the two points
10
Category 1
Questio
nFor transverse waves the wave’s amplitude is _____________ to the wave’s motion.
20
Category 1
Answ
er
Transverse Waves- For transverse waves the wave’s amplitude is perpendicular to the wave’s motion.
20
Category 1
Questio
nThe source of all waves is something that ______.
30
Category 1
Answ
er
The source of all waves is something that vibrates. The frequency of the vibrating source and the frequency of the wave it produces are the same.
30
Category 1
Questio
nThe back and forth vibration in a direction parallel to the wave's motion forms a ________ wave where both the amplitude and wave motion are parallel.
40
Category 1
Answ
er
Longitudinal Waves- back and forth vibration in a direction parallel to the wave's motion; amplitude and wave motion are parallel.
40
Category 1
Questio
n___________was the first person to break the sound barrier when he flew faster than the speed of sound in the X-1 rocket-powered aircraft on October 14, 1947.
50
Category 1
Answ
er
Chuck Yeager was the first person to break the sound barrier when he flew faster than the speed of sound in the X-1 rocket-powered aircraft on October 14, 1947.
50
Category 1
Category 2 questions follow
Questio
nWhat is the approximate distance of a thunderstorm when you note a 10 second delay between the flash of the lightning and the sound of the thunder?
10
Category 2
Answ
er
What is the approximate distance of a thunderstorm when you note a 10 second delay between the flash of the lightning and the sound of the thunder? Answer 10 seconds 340 meters/second= 3400 meters
10
Category 2
Questio
nDistant galaxies show a ______ shift in the light they emit, indicating that the universe is expanding (or moving further apart)
20
Answ
er
Red Shift - a decrease in frequency towards the low-frequency, or red, end of the light spectrum (light source is moving away from the receiver) Distant galaxies show a red shift in the light they emit, indicating that the universe is expanding (or moving further apart)
20
Category 2
Questio
nThe bending of a wave is called ___________
30
Category 2
Answ
er
Refraction
30
Category 2
Questio
nWhen the speed of the source in a medium is as great, or greater, than the speed of the wave it produces it will catch up to the wave crests and pass them producing a V-shape. The V shape wave is called a _____________
40
Category 2
Answ
er
Bow Wave – when the speed of the source in a medium is as great, or greater, than the speed of the wave it produces it will catch up to the wave crests and pass them producing a V-shape.
40
Category 2
Questio
nNatural Frequency is the frequency at which an
elastic object naturally tends to vibrate. At this
frequency, a minimum energy is required to
produce a forced vibration. The result of forced
vibrations in a body when the applied frequency
matches the natural frequency of the body is called
___________.
50
Category 2
Answ
er
Resonance
50
Category 2
Category 3 questions follow
Questio
nSound travels faster in ______air than ____ air
10
Category 3
Answ
er
Sound travels faster in warm air than in cool air.
10
Category 3
Questio
n__________ is a re-echoed sound, where multiple reflections of sound waves bounce off walls
20
Category 3
Answ
er
Reverberation - re-echoed sound, multiple reflections of sound waves from walls
20
Category 3
Questio
nIn the Doppler Effect, the change in tone occurs when a. The object is moving toward youb. The object is moving away from youc. You are moving toward the soundd. You are moving away from the sounde. A and b are correctf. The emitter and receiver are moving in relation
to each other
30
Category 3
Answ
er
FThe emitter and receiver are moving in relation to each other
30
Category 3
Questio
nWhen the crest of one wave overlaps the crest of
another, they are “in phase” and when their individual effects are add together they produce a
wave of ____________ amplitude.
40
Category 3
Answ
er
When the crest of one wave overlaps the crest of another, they are “in phase” and when their individual effects are add together they produce a wave of increased amplitude.
40
Category 3
Questio
n___________ is the maximum displacement from equilibrium.
50
Category 3
Answ
er
Amplitude- the distance from the midpoint to the crest (or trough) of the wave. The amplitude equals the maximum displacement from equilibrium.
50
Category 3
Category 4 questions follow
Questio
nSounds that are too high for us to hear are called___
10
Category 4
Answ
er
infrasonic frequencies < 20 Hzultrasonic frequencies > 20,000 Hz
10
Category 4
Questio
nThe human hearing range is ___ - _____ Hz
20
Category 4
Answ
er
frequencies between 20 Hz and 20,000 Hz human hearing range
20
Category 4
Questio
nThe to-and-fro vibratory motion (often called oscillatory motion) of a swinging pendulum in a small arc is called ______________motion
30
Category 4
Answ
er
The to-and-fro vibratory motion (often called oscillatory motion) of a swinging pendulum in a small arc is called simple harmonic motion
30
Category 4
Questio
nPeriod- Time required for a full oscillation (one round trip) is called the _________ of oscillation.
40
Category 4
Answ
er
Period- Time required for a full oscillation (one round trip) is called the period of oscillation.
40
Category 4
Questio
nSound cannot travel in a ____________.
50
Category 4
Answ
er
Sound cannot travel in a vacuum. If there is no medium to vibrate, then no sound is possible.
50
Category 4
Category 5 questions follow
Questio
nWhat is the speed of Sound in Air at sea level?
10
Category 5
Answ
er
340 meters/second or 760 miles/hour; Mach 1
10
Category 5
Questio
nWhen a sound wave strikes a surface it can be.…Reflected- bounces offTransmitted- sent throughAbsorbed- taken inAll of these.
20
Category 5
Answ
er
All of these.
20
Category 5
Questio
nWhat is the study of sound properties called?
30
Category 5
Answ
er
Acoustics... ...the study of sound properties.
30
Category 5
Questio
nWhat caused the “sound barrier” that had to be broken to go faster than the speed of sound?
40
Category 5
Answ
er
40
Category 5Waves piled up in
front and formed
a thick stack that
caused
turbulance as
planes
approached the
sound barrier
Questio
n What is the beat frequency when a 262 Hz and a 266 Hz tuning fork are sounded together?
50
Category 5
Answ
er
4 beats
50
Category 5
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