# Wave motion patterns

A wiggle in time is aA) vibration.B) wave.C) bothD) neither

A

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A common source of wave motion is aA) wave pattern.B) harmonic object.C) vibrating object.D) region of variable high and low pressure.E) none of these

C

Like a transverse wave, a longitudinal wave hasA) amplitude, frequency, wavelength, and speedB) amplitude, frequency, and wavelength.C) amplitude, wavelength, and speed.D) wavelength, speed, and frequency.E) amplitude, frequency, and speed.

A

In a longitudinal wave the compression and rarefaction travel inA) the same direction.B) opposite directions.C) a vacuum.

A

Which of the following is not a transverse wave?A) soundB) lightC) radioD) all of theseE) none of these

A

The vibrations of a transverse wave move in a directionA) along the direction of wave travel.B) at right angles to the direction of wave travel.C) that changes with speed.

B

The vibrations of a longitudinal wave move in a directionA) along the direction of wave travel.B) at right angles to the direction of wave travel.C) that changes with speed.

A

How many vibrations per second are associated with a 101-MHz radio wave?A) less than 101,000,000B) 101,000,000C) more than 101,000,000

B

Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz isA) 0.3 m.B) 3.0 m.C) 30 m.D) 300 m.E) none of these

B

The frequency of a simple pendulum depends onA) its mass.B) its length.C) the acceleration due to gravity.D) all of theseE) two of these

E

If the frequency of a certain wave is 10 hertz, its period isA) 0.1 second.B) 10 seconds.C) 100 seconds.D) None of the above choices are correct.

A

A 60-vibration-per-second wave travels 30 meters in 1 second. Its frequency isA) 30 hertz and it travels at 60 m/s.B) 60 hertz and it travels at 30 m/s.C) 1800 hertz and it travels at 2 m/s.

B

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An object that completes 10 vibrations in 20 seconds has a frequency ofA) 0.5 hertz.B) 2 hertz.C) 200 hertz.

A

An object that completes 20 vibrations in 10 seconds has a frequency ofA) 0.5 hertz.B) 1 hertz.C) 2 hertz.D) 200 hertz.

C

An object that completes 100 vibrations in 5 seconds has a period ofA) 0.5 second.B) 1 second.C) 2 seconds.D) None of the above choices are correct.

D

A weight suspended from a spring bobs up and down over a distance of 1 meter in two seconds. Its frequency isA) 0.5 hertz.B) 1 hertz.C) 2 hertz.D) None of the above choices are correct.

A

To say that one wave is out of phase with another is to say that the waves areA) of different amplitudes.B) of different frequencies.C) of different wavelengths.D) out of step.E) all of these

D

Wave interference occurs forA) sound waves.B) light waves.C) water waves.D) All of the above choices are correct.E) None of the above choices are correct.

D

A standing wave occurs whenA) two waves overlap.B) a wave reflects upon itself.C) the speed of the wave is zero or near zero.D) the amplitude of a wave exceeds its wavelength.

B

A node is a position ofA) minimum amplitude.B) maximum amplitude.C) half amplitude.

A

The Doppler effect is characteristic ofA) water waves.B) sound waves.C) light waves.D) all of the above choicesE) none of the above choices

D

A Doppler effect occurs when a source of sound movesA) towards you.B) away from you.C) either towards you or away from you.D) in a circle around you.

C

A wave barrier is produced when a wave source movesA) nearly as fast as the waves it produces.B) as fast as the waves it produces.C) faster than the waves it produces.

B

A bow wave is produced when a wave source movesA) nearly as fast as the waves it produces.B) as fast as the waves it produces.C) faster than the waves it produces.

C

An observer on the ground hears a sonic boom which is created by an airplane flying at a speedA) just below the speed of sound.B) equal to the speed of sound.C) greater than the speed of sound.D) All of the above choices are true.E) None of the above choices are true.

C

An aircraft that flies faster than the speed of sound is said to beA) subsonic.B) supersonic.C) impossible.

B

As a supersonic craft increases in speed, the angle of its V-shaped shock wave becomesA) wider.B) narrower.C) neither

B

The source of a sonic boomA) must itself be an emitter of sound.B) may or may not be an emitter of sound.C) is not itself an emitter of sound.

B

A fishing-boat captain returns to port saying, “It’s rough out there – the waves are 4 meters high.” He probably means that the amplitude of the waves isA) 4 m.B) 3 m.C) 2 m.D) 1 m.

C

If waves are going by at the same speed, the wave with the greatest period of oscillation is the wave that has the greatestA) amplitude.B) length.C) frequency.D) None of the above choices are true.

D

If the waves are going by at the same frequency, the wave that has the greatest speed will have the greatestA) amplitude.B) length.C) frequency.D) None of the above choices are true.

B

A floating leaf oscillates up and down two complete cycles each second as a water wave passes by. What is the wave’s frequency?A) 0.5 hertzB) 1 hertzC) 2 hertzD) 3 hertzE) 6 hertz

C

A floating leaf oscillates up and down two complete cycles in one second as a water wave passes by. The wave’s wavelength is 10 meters. What is the wave’s speed?A) 2 m/sB) 10 m/sC) 20 m/sD) 40 m/sE) more than 40 m/s

C

A wave travels an average distance of 6 meters in one second. What is the wave’s velocity?A) less than 0.2 m/sB) 1 m/sC) 3 m/sD) 6 m/sE) more than 6 m/s

D

A wave travels an average distance of 1 meter in 1 second with a frequency of 1 hertz. Its amplitude isA) less than 1 meter.B) 1 meter.C) more than 1 meter.D) not enough information to say

D

The frequency of the second hand on a clock isA) 1 hertz.B) 1/60 hertz.C) 60 hertz.

B

The period of the second hand on a clock isA) 1 second.B) 1/60 second.C) 60 seconds.D) 3600 seconds.E) 12 hours.

C

A Doppler effect occurs when a source of sound movesA) toward you.B) at right angles to you.C) both of theseD) none of these

A

The amplitude of a particular wave is 1 meter. The top-to-bottom distance of the disturbance isA) 0.5 m.B) 1 m.C) 2 m.D) none of these

C

When a pendulum clock at sea level is taken to the top of a high mountain, it willA) gain time.B) lose time.C) neither gain nor lose time.

B

If you double the frequency of a vibrating object, its periodA) doubles.B) halves.C) is quartered.

B

You dip your finger repeatedly into water and make waves. If you dip your finger more frequently, the wavelength of the wavesA) shortens.B) lengthens.C) stays the same.

A

During a single period, the distance traveled by a wave isA) one-half wavelength.B) one wavelength.C) two wavelengths.

B

A floating object oscillates up and down 2 complete cycles in 1 second as a water wave of wavelength 5 meters passes by. The speed of the wave isA) 2 m/s.B) 5 m/s.C) 10 m/s.D) 15 m/s.E) none of these

C

A wave oscillates up and down two complete cycles each second. If the wave travels an average distance of 6 meters in one second, its wavelength isA) 0.5 m.B) 1 m.C) 2 m.D) 3 m.E) 6 m.

D

As a train of water waves goes by, a piece of cork floating on the water bobs up and down one complete cycle each second. The waves are 2 meters long. What is the speed of the wave?A) 0.25 m/sB) 0.50 m/sC) 1.0 m/sD) 2 m/sE) 4 m/s

D

A skipper on a boat notices wave crests passing the anchor chain every 5 seconds. The skipper estimates the distance between crests is 15 m. What is the speed of the water waves?A) 3 m/sB) 5 m/sC) 15 m/sD) not enough information given

A

A child swings to and fro on a playground swing. If the child stands rather than sits, the time for a to-and-fro swing isA) lengthened.B) shortened.C) unchanged.

B

A pendulum clock at high altitudes runsA) fast.B) slow.C) normally as it does at sea level.

B

The stride of a horse depends somewhat on the pendulum-like swing of its legs. This stride would be higher in frequency if more of the mass in its legs were concentratedA) in the upper part, nearer the horse’s body.B) towards its feet.C) halfway up its legs.D) uniformly all along its legs.E) none of these

A

A jet traveling at 1500 km/hr passes between observers A and B. In a short time a sonic boom will be heard byA) observer A , observer B, and the pilot of the jet.B) observer A only.C) observer B only.D) observers A and B, but not the pilot.

D

The sonic boom at ground level produced by an aircraft will be reduced if the aircraftA) is smaller, flies higher, and is more streamlined.B) flies higher.C) is more streamlined.D) is smaller.E) None of the above choices are true.

A

As a source of continuous sound approaches a constant speed, you will be aware of an apparent increasing of itsA) loudness, frequency, and wavelength.B) loudness and wavelength.C) loudness and frequency.D) frequency and wavelength.E) None of the above choices are correct.

E

If at a concert, a wind blows directly from the orchestra toward you, the speed of the sound you hear will beA) decreased.B) increased.C) neither decreased nor increased.

B

At a concert the oboe is playing a long steady note as you walk away from the stage at an accelerating velocity toward the rest room. The pitch of the sound that you hear, isA) steady but higher than normalB) steady but lower than normal.C) continually decreasing.D) continually increasing.E) None of the above choices are correct.

C

If at a concert you run toward the orchestra, the frequency of the sound you hear will beA) decreased.B) increased.C) neither decreased nor increased.

B

Two wave crests are generated at opposite ends of a long rope. Will there be an instant in which the rope’s amplitude is zero everywhere?A) Yes, if the waves have the same amplitudeB) Yes, if the waves have different amplitudes.C) No.

C

A common source of wave motion isA) a harmonic objectB) a wave patternC) a region of changing pressureD) a vibrating object

D

The pendulum with the greatest frequency is the pendulum with theA) shortest period.B) shortest length.C) shortest period and the shortest length.D) shortest amplitude.E) greatest amplitude.

C

In a longitudinal wave the compressions and rarefactions travelA) at right angles to the waveB) in the same direction as the waveC) in opposite directions

B

Which of the following is not a transverse waveA) lightB) sports waveC) sound

C

A standing wave occurs whenA) two waves overlapB) the amplitude of the wave exceeds it wavelengthC) the wave reflects on itselfD) the speed of a wave is near zero

C

The Doppler effect occurs when a source of sound movesA) towards youB) in a circle around youC) away from youD) either towards you or away from you

D

The frequency of a simple pendulum is independent of itsA) lengthB) massC) gravity

B

An object that completes 14 vibrations in 7 seconds has a frequency ofA) 98HzB) .5HzC) 21HzD) 2Hz

D

A bow wave is produced when the source of a wave movesA) at a right angle to the wave it producesB) faster than the wave it producesC) slower than the wave it produces

B

As a supersonic aircraft increases speed, the angle of its shock wave becomesA) widerB) narrower

B

The period of the second hand on a clock isA) 1 secondB) 1/60 secondC) 3600 secondsD) 60 seconds

D

A source of high frequency sound emits a highA) speedB) amplitudeC) pitch

C

Double the frequency of sound and you halve itsA) wavelengthB) amplitudeC) speed

A

The approximate range of human hearing isA) 20 – 20,000HzB) 40 – 40,000HzC) 10 – 10,000Hz

A

A sound wave is aA) shock waveB) longitudinal waveC) transverse waveD) standing wave

B

Sound travels faster inA) airB) steelC) waterD) a vacuum

B

Sound waves can not travel inA) waterB) steelC) a vacuum

C

The speed of a sound wave in air depends onA) air temperatureB) wavelengthC) amplitude

A

The object with the highest natural frequency is aA) small bellB) Taco BellC) large bell

A

Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz isA) 30 mB) 300 mC) 0.3 mD) 3.0 mE) none of these

D

The frequency of a simple pendulum depends onA) lengthB) its massC) the acceleration due to gravityD) all of theseE) two of these

E

A 60-vibration per second wave travels 30 meters in 1 second. Its frequency isA) 1800 hertz and it travels at 2 m/sB) 30 hertz and it travels at 60 m/sC) 60 hertz and it travels at 30 m/s

C

To say that one wave is out of phase with another is to say that the waves areA) of different wavelengthsB) of different frequenciesC) of different amplitudesD) out of stepE) all of these

D

A node is a position ofA) maximum amplitudeB) minimum amplitudeC) half amplitude

B

The doppler effect is a characteristic ofA) sound wavesB) water wavesC) light wavesD) all of theseE) none of the above choices

D

For light, a red shift indicates that the light source is movingA) away from youB) at right angles to youC) toward youD) actually, all of theseE) none of these

A

A floating object oscillates up and down 2 complete cycles in 1 second as a water wave of wavelength 5 meters passes by. The speed of the wave isA) 10 m/sB) 15 m/sC) 5 m/sD) 2 m/sE) none of these

A

Suppose a simple pendulum is suspended in an elevator. When the elevator is accelerating upward, the frequency of the pendulumA) increasesB) decreasesC) doesn’t change

A

The stride of a horse depends somewhat on the pendulum like swing of its legs. The stride would be higher in frequency if more of the mass in its legs were concentratedA) in the upper part,nearer the horse’s bodyB) uniformly all along its legsC) towards its feetD) halfway up its legsE) none of these

A

At a concert the oboe is playing a long steady note as you walk away from the stage at an accelerating velocity toward the rest room. The pitch of the sound that you hear isA) continually increasingB) continually decreasingC) steady but lower than normalD) steady but higher than normalE) none of the above choices are correct

B

Double the frequency of sound and you also double itsA) amplitudeB) speedC) wavelengthD) all of theseE) none of these

E

We are best at hearingA) ultrasonic soundB) infrasonic soundC) both infrasonic and ultrasonic soundsD) none of the above choices are true

D

A piano tuner knows that a key on the piano is tuned to the frequency of his tuning fork when he strikes them at the same time and the number of beats he hears each second isA) 0B) 1C) 2D) 3E) 4

A

Sound travels faster in air if the air temperature isA) coldB) warmC) average

B

When the speed of sound near the ground is greater than it is at higher altitudes, the sound tends to be bentA) downwardB) upwardC) to the leftD) to the rightE) none of the above choices are correct

B

A dolphin perceives its environment by the sense ofA) soundB) sightC) both sight and soundsD) neither sight nor sound

C

The energy of sound in air eventually becomesA) cancelled by destructive interferenceB) increased internal energy of the airC) weaker and weaker until it disappearsD) canceled by both destructive and constructive interference

B

The frequencies of sound that carry farther in air areA) lowB) ultrasonicC) high

A

The natural frequency of an object depends on itsA) size, shape and elasticityB) shape and elasticityC) size and shapeD) size and elasticity

A

The least energy required to produce forced vibration in an object occursA) above its natural frequencyB) at its natural frequencyC) below its natural frequency

B

Which doesn’t belong to the same family?A) longitudinal wavesB) shock wavesC) radio wavesD) ultrasonic wavesE) infrasonic waves

C

When you tune a radio to a certain station, you match the frequency of the internal electrical circuit to the frequency of the wanted radio station. In so doing you are employing the principles ofA) forced vibrationsB) resonanceC) reverberationD) beatsE) wave interefernce

B

For FM radio, the F stands forA) forced vibration at which resonance occursB) foulC) femaleD) frequencyE) fax

D

In which one of these media does sound travel the fastest?A) iceB) water vaporC) steamD) waterE) sound travels the same speed in each of the above media

A

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