Question 1

If you double the frequency of a vibrating object,its period

Accepted Answer

A) doubles. 
B) halves. 
C) is quartered. 
A) doubles. 
B) halves. 
C) is quartered.

Question 2

A floating leaf oscillates up and down two complete cycles each second as a water wave passes by.What is the wave's frequency?

Accepted Answer

A) 0)5 hertz 
B) 1 hertz 
C) 2 hertz 
D) 3 hertz 
E) 6 hertz 
A) 0)5 hertz 
B) 1 hertz 
C) 2 hertz 
D) 3 hertz 
E) 6 hertz

Question 3

If the frequency of a certain wave is 10 hertz,its period is

Accepted Answer

A) 0)1 second. 
B) 10 seconds. 
C) 100 seconds. 
D) None of the above choices are correct. 
A) 0)1 second. 
B) 10 seconds. 
C) 100 seconds. 
D) None of the above choices are correct.

Question 4

A jet traveling at 1500 km/hr passes between observers A and B.In a short time a sonic boom will be heard by

Accepted Answer

A) 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. 
A) 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.

Question 5

During a single period,the distance traveled by a wave is

Accepted Answer

A) one-half wavelength. 
B) one wavelength. 
C) two wavelengths. 
A) one-half wavelength. 
B) one wavelength. 
C) two wavelengths.

Question 6

The Doppler effect is characteristic of

Accepted Answer

A) water waves. 
B) sound waves. 
C) light waves. 
D) all of the above choices 
E) none of the above choices 
A) water waves. 
B) sound waves. 
C) light waves. 
D) all of the above choices 
E) none of the above choices

Question 7

A wave barrier is produced when a wave source moves

Accepted Answer

A) nearly as fast as the waves it produces. 
B) as fast as the waves it produces. 
C) faster than the waves it produces. 
A) nearly as fast as the waves it produces. 
B) as fast as the waves it produces. 
C) faster than the waves it produces.

Question 8

An object that completes 20 vibrations in 10 seconds has a frequency of

Accepted Answer

A) 0)5 hertz. 
B) 1 hertz. 
C) 2 hertz. 
D) 200 hertz. 
A) 0)5 hertz. 
B) 1 hertz. 
C) 2 hertz. 
D) 200 hertz.

Question 9

Some of a wave's energy dissipates as heat.In time,this will reduce the wave's

Accepted Answer

A) speed. 
B) wavelength. 
C) amplitude. 
D) frequency. 
E) period. 
A) speed. 
B) wavelength. 
C) amplitude. 
D) frequency. 
E) period.

Question 10

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?

Accepted Answer

A) 0)25 m/s 
B) 0)50 m/s 
C) 1)0 m/s 
D) 2 m/s 
E) 4 m/s 
A) 0)25 m/s 
B) 0)50 m/s 
C) 1)0 m/s 
D) 2 m/s 
E) 4 m/s

Question 11

The vibrations of a longitudinal wave move in a direction

Accepted Answer

A) along the direction of wave travel. 
B) at right angles to the direction of wave travel. 
C) that changes with speed. 
A) along the direction of wave travel. 
B) at right angles to the direction of wave travel. 
C) that changes with speed.

Question 12

Use the following figure to answer the question:  
-A weight suspended from a spring bobs up and down over a distance of 1 meter in two seconds.Its frequency is

Accepted Answer

A) 0)5 hertz. 
B) 1 hertz. 
C) 2 hertz. 
D) None of the above choices are correct. 
A) 0)5 hertz. 
B) 1 hertz. 
C) 2 hertz. 
D) None of the above choices are correct.

Question 13

The frequency of a simple pendulum depends on

Accepted Answer

A) its mass. 
B) its length. 
C) the acceleration due to gravity. 
D) all of these 
E) two of these 
A) its mass. 
B) its length. 
C) the acceleration due to gravity. 
D) all of these 
E) two of these

Question 14

An observer on the ground hears a sonic boom which is created by an airplane flying at a speed

Accepted Answer

A) 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. 
A) 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.

Question 15

A pendulum clock at high altitudes runs

Accepted Answer

A) fast. 
B) slow. 
C) normally as it does at sea level. 
A) fast. 
B) slow. 
C) normally as it does at sea level.

Question 16

Use the following figure to answer the question:  
-You dip your finger repeatedly into water and make waves.If you dip your finger more frequently,the wavelength of the waves

Accepted Answer

A) shortens. 
B) lengthens. 
C) stays the same. 
A) shortens. 
B) lengthens. 
C) stays the same.

Question 17

A standing wave occurs when

Accepted Answer

A) 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. 
A) 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.

Question 18

The source of a sonic boom

Accepted Answer

A) 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. 
A) 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.

Exam 19: Vibrations and Waves

If you double the frequency of a vibrating object,its period

A floating leaf oscillates up and down two complete cycles each second as a water wave passes by.What is the wave's frequency?

If the frequency of a certain wave is 10 hertz,its period is

A jet traveling at 1500 km/hr passes between observers A and B.In a short time a sonic boom will be heard by

During a single period,the distance traveled by a wave is

The Doppler effect is characteristic of

A wave barrier is produced when a wave source moves

An object that completes 20 vibrations in 10 seconds has a frequency of

Some of a wave's energy dissipates as heat.In time,this will reduce the wave's

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?

The vibrations of a longitudinal wave move in a direction

Use the following figure to answer the question: -A weight suspended from a spring bobs up and down over a distance of 1 meter in two seconds.Its frequency is

The frequency of a simple pendulum depends on

An observer on the ground hears a sonic boom which is created by an airplane flying at a speed

A pendulum clock at high altitudes runs

Use the following figure to answer the question: -You dip your finger repeatedly into water and make waves.If you dip your finger more frequently,the wavelength of the waves

A standing wave occurs when

The source of a sonic boom

About Science

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