Jackson CP Physics Waves Test

A weight suspended from a spring bobs up and down over a distance of 1 meter in 2 seconds. Its frequency is A) 0.5 hertz. B) 1 hertz. C) 2 hertz. D) none of the above

A) 0.5 hertz.

A 340-Hz sound wave travels at 340 m/s in air, with a wavelength of A) 1 m. B) 10 m. C) 100 m. D) 1000 m. E) none of the above

A) 1 m.

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic sound that travels 1530 m/s in seawater, and finds a 6-second time delay of the echo to the ocean floor and back. The ocean depth there is A) 1020 m. B) 2040 m. C) 4590 m. D) 9180 m. E) none of the above

A) 1020 m

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

A) 3 m/s

What happens when an airplane is flying faster than the speed of sound? A) A shock wave is produced B) There is no sonic boom C)It becomes very quiet inside the plane D) Nobody can hear the plane fly overhead E) none of the above

A) A shock wave is produced

Where can you touch a standing wave on a rope without disturbing the wave? A) At a node B) At an antinode C)At any place along the wave

A) At a node

Sound waves can interfere with one another so that no sound results A) True B) False

A) True

A sound wave is a A) longitudinal wave. B)transverse wave. C) standing wave. D) shock wave. E) none of the above

A) longitudinal wave.

Sound is an example of a A) longitudinal wave. B)transverse wave. C) standing wave. D) constructive wave. E) Doppler wave.

A) longitudinal wave.

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

A) shortens.

Which of the following is NOT a transverse wave? A) sound. B) light. C) radio wave. D) all of these. E) none of the above

A) sound.

Two waves arrive at the same place at the same time exactly in step with each other. Each wave has an amplitude of 1 m. The resulting wave has an amplitude of A) 4 m. B) 2 m. C) 1 m. D) 0.5 m. E) 0.25 m.

B) 2 m

Radio waves travels at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz is A) 0.33 m. B) 3.0 m. C) 3.3 m. D) 30 m.

B) 3.0 m.

As the sound of a car's horn passes and gets farther away from you, the pitch of the horn seems to A) increase. B) decrease. C) stay the same.

B) decrease.

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

B) halves.

When two or more waves are at the same place at the same time, the resulting effect is called A) a standing wave. B) interference. C) a Doppler wave. D) a period. E) a shock wave.

B) interference

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

B) one wavelength

The time needed for a wave to make one complete cycle is its A) frequency. B) period. C) wavelength. D) velocity. E) amplitude.

B) period

Compared to the speed of light, sound travels A) faster. B) slower. C) at about the same speed.

B) slower.

An aircraft that flies faster than the speed of sound is said to be A) subsonic. B) supersonic. C) none of the above

B) supersonic

Sound waves are produced by A) radio stations. B) vibrating objects. C) objects under pressure. D) soft objects. E) none of the above

B) vibrating objects.

Constructive interference occurs when A)two waves of the same color overlap. B)the crests of two waves overlap. C)the crest of one wave meets the trough of another wave. D) all of the above E) none of the above

B)the crests of two waves overlap.

A wave created by shaking a rope up and down is called a A) longitudinal wave. B)transverse wave. C) standing wave. D) constructive wave. E) Doppler wave.

B)transverse wave

A certain ocean wave has a frequency of 0.05 hertz and a wavelength of 10 meters. What is the wave's speed? A) 200 m/s B) 10 m/s C) 0.5 m/s D) 0.05 m/s E) 0.005 m/s

C) 0.5 m/s

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

C) 2 m.

A cork floating in the ocean oscillates up and down two complete cycles in 1 second as an ocean wave passes by. The wave's wavelength is 10 meters. What is the wave's speed? A) 2 m/s B) 10 m/s C) 20 m/s D) 40 m/s E) More than 40 m/s

C) 20 m/s

A Doppler effect occurs when a source of sound moves A)toward you. B) away from you. C) both A and B D) none of the above

C) both A and B

An observer on the ground hears a sonic boom which is created by an airplane flying at a speed A) just below the speed of sound. B) equal to the speed of sound. C) greater than the speed of sound. D) none of the above

C) greater than the speed of sound.

A sonic boom A) is produced as a plane breaks through the sound barrier. B) is produced by subsonic projectiles as well as subsonic aircraft. C) is swept continuously behind a plane flying faster than the speed of sound. D) all of the above E) none of the above

C) is swept continuously behind a plane flying faster than the speed of sound.

Hertz is a A)type of car. B) unit of period. C) unit of frequency. D) unit of wavelength. E) special radio wave.

C) unit of frequency.

The source of all wave motion is a A) movement of matter. B) harmonic object. C) vibration. D) region of variable high and low pressure.

C) vibration

The distance between successive identical parts of a wave is called its A) frequency. B) period. C) wavelength. D) velocity. E) amplitude.

C) wavelength.

When a sound source moves towards you, what happens to the wave speed? A)It increases. B)It decreases. C)It stays the same.

C)It stays the same.

Destructive interference occurs when A)two waves of the same color overlap. B)the crests of two waves overlap. C)the crest of one wave meets the trough of another wave. D) all of the above E) none of the above

C)the crest of one wave meets the trough of another wave.

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

D) 3 m

A wave travels an average distance of 6 meters in 1 second. What is the wave's velocity? A) Less than 0.2 m/s B) 1 m/s C) 3 m/s D) 6 m/s E) More than 6 m/s

D) 6 m/s

Which of the following would be most likely to transmit sound the best? A)Water in a swimming pool B)Water in the ocean C)Air in your classroom D) Steel in a bridge E)Wood in a cabinet

D) Steel in a bridge

Sound waves cannot travel in A) air. B) water. C) steel. D) a vacuum. E) Sound can travel in all of the above.

D) a vacuum.

interference can be shown by using A) light waves. B) sound waves. C) water waves. D) all of the above E) none of the above

D) all of the above

Resonance occurs when A) sound makes multiple reflections. B) sound changes speed in going from one medium to another. C)the amplitude of a wave is amplified. D) an object is forced to vibrate at its natural frequency. E) all of the above

D) an object is forced to vibrate at its natural frequency

The singer Caruso is said to have made a crystal chandelier shatter with his voice. This is a demonstration of A) an echo. B) sound refraction. C) beats. D) resonance. E) interference.

D) resonance.

The Doppler effect is the change in observed frequency due to A)the type of medium the wave is in. B)the original frequency of the source. C)the type of wave. D)the motion of the source or observer. E) all of the above

D)the motion of the source or observer.

The period of an ocean wave is 10 seconds. What is the wave's frequency? A) 20 Hz B) 10 Hz C) 1.0 Hz D) 0.5 Hz E) 0.1 Hz

E) 0.1 Hz

Unlike a transverse wave, a longitudinal wave has no A) amplitude. B) frequency. C) wavelength. D) speed. E) A longitudinal wave has all of the above.

E) A longitudinal wave has all of the above.

An explosion ocurrs 34 km away. Given that sound travels at 340 m/s, the time it takes for the sound to reach you is A) 0.1 sec. B) 1 sec. C) 10 sec. D) 20 sec. E) more than 20 sec.

E) more than 20 sec