Waves and Sound: Interactive Learning Quizzes for Seventh Grade Science

Question 1

In which unit is frequency measured?

Accepted Answer

Hertz

Answer

Meters

Answer

Seconds

Answer

Newtons

Question 2

Which of the following does NOT affect the speed of sound in a medium?

Accepted Answer

Frequency

Answer

Temperature

Answer

Density

Answer

Humidity

Question 3

How are frequency and wavelength of a wave related?

Accepted Answer

Inversely proportional

Answer

Directly proportional

Answer

Unrelated

Answer

Dependent on the medium

Question 4

What characteristic is associated with a high-pitched sound?

Accepted Answer

High frequency

Answer

Long wavelength

Answer

Low frequency

Answer

Short wavelength

Question 5

What is the Doppler effect?

Accepted Answer

Change in sound frequency caused by motion

Answer

Change in sound amplitude caused by motion

Answer

Change in sound wavelength caused by motion

Answer

Change in sound velocity caused by motion

Question 6

Which type of sound wave is NOT listed here?

Accepted Answer

Transverse

Answer

Longitudinal

Answer

Surface

Answer

Compression

Question 7

What is the purpose of a resonator in a musical instrument?

Accepted Answer

To amplify certain sound frequencies

Answer

To reduce unwanted noise

Answer

To alter the pitch of the sound

Answer

To establish a standing wave

Question 8

Which characteristic is NOT shared by all types of waves?

Accepted Answer

Color

Answer

Wavelength

Answer

Frequency

Answer

Amplitude

Question 9

What is the SI unit of measurement for wavelength?

Accepted Answer

Meter

Answer

Hertz

Answer

Newton

Answer

Second

Question 10

Which type of wave does not require a medium to travel?

Accepted Answer

Light waves

Answer

Sound waves

Answer

Water waves

Answer

Seismic waves

Question 11

Which of the following is an example of a transverse wave?

Accepted Answer

Light waves

Answer

Water waves

Answer

Sound waves

Answer

Seismic waves

Question 12

What phenomenon causes a change in the frequency of a wave when the source or observer is moving?

Accepted Answer

Doppler effect

Answer

Reflection

Answer

Refraction

Answer

Interference

Question 13

Which medical imaging technique utilizes sound waves to generate images of soft tissues?

Accepted Answer

Ultrasound

Answer

X-ray

Answer

MRI

Answer

CT scan

Question 14

How are pitch and loudness related to sound waves?

Accepted Answer

Pitch relates to frequency, while loudness relates to amplitude

Answer

Pitch relates to amplitude, while loudness relates to frequency

Answer

Both pitch and loudness relate to frequency

Answer

Both pitch and loudness relate to amplitude

Question 15

Which of the following factors affects the speed of a sound wave?

Accepted Answer

The type of medium it is traveling through

Accepted Answer

The temperature of the medium

Answer

The frequency of the wave

Answer

The amplitude of the wave

Question 16

Which property is NOT characteristic of waves?

Accepted Answer

Temperature

Answer

Amplitude

Answer

Wavelength

Answer

Velocity

Question 17

What is the relationship between frequency and wavelength for waves traveling at a constant speed?

Accepted Answer

Frequency is inversely proportional to wavelength.

Answer

Frequency is directly proportional to wavelength.

Answer

Frequency is independent of wavelength.

Answer

Wavelength is directly proportional to frequency.

Question 18

In which medium can sound waves NOT propagate?

Accepted Answer

Vacuum

Answer

Air

Answer

Water

Answer

Wood

Question 19

Which of the following factors does NOT affect the speed of sound in a given medium?

Accepted Answer

Wind speed

Answer

Temperature

Answer

Pressure

Answer

Density

Question 20

What is the term for the bending of sound waves when they cross the boundary between two different media?

Accepted Answer

Refraction

Answer

Reflection

Answer

Diffraction

Answer

Interference

Question 21

What is the unit of measurement for sound intensity level?

Accepted Answer

Decibel

Answer

Hertz

Answer

Meter per second

Answer

Newton

Question 22

What is the principle behind the use of sonar in ocean exploration?

Accepted Answer

Sound waves bounce off underwater objects and provide information about their location and shape

Answer

Sound waves refract differently in different water layers, allowing for depth measurements

Answer

Sound waves diffract around obstacles, enabling sonar to detect hidden objects

Answer

Sound waves interfere with each other, creating patterns that can be used to map the ocean floor

Question 23

In which unit is frequency measured?

Accepted Answer

Hertz (Hz)

Answer

Meters (m)

Answer

Seconds (s)

Answer

Joules (J)

Question 24

What is the approximate speed of sound in air?

Accepted Answer

343 meters per second

Answer

299,792 kilometers per second

Answer

186,000 miles per hour

Answer

1,000 kilometers per hour

Question 25

Which of the following generates sound?

Accepted Answer

A vibrating object

Answer

A light bulb

Answer

A tree

Answer

A mirror

Question 26

What is the primary function of the eardrum in hearing?

Accepted Answer

To transmit sound waves to the inner ear

Answer

To amplify sound waves

Answer

To shield the inner ear from damage

Answer

To create sound waves

Question 27

Which factor does not influence the speed of sound in a medium?

Accepted Answer

Wavelength

Answer

Temperature

Answer

Density

Answer

Humidity

Question 28

Which of these is NOT a property of mechanical waves?

Accepted Answer

Can move through a vacuum

Answer

Require a medium to move

Answer

Have a wavelength

Answer

Can move energy

Question 29

The speed of a sound wave can be changed by:

Accepted Answer

The heat and thickness of the material it moves through

Answer

The loudness or softness of the sound

Answer

How often the sound is made

Answer

The direction the sound is moving

Question 30

Which of these is an example of a wave that moves up and down?

Accepted Answer

Water wave on a lake

Answer

Sound wave traveling in air

Answer

Light wave from a light bulb

Answer

Radio wave from a cell phone

Question 31

The number of times a wave repeats in one second is called its:

Accepted Answer

Hertz (Hz)

Answer

Meters (m)

Answer

Seconds (s)

Answer

Newtons (N)

Question 32

The Doppler effect happens when:

Accepted Answer

A sound source and the listener change position

Answer

Two sound waves of different frequency combine

Answer

A sound wave moves through a solid, liquid, and gas

Answer

A sound wave bounces off a surface

Question 33

Which of these uses the idea of resonance?

Accepted Answer

Tuning musical instruments

Answer

Making a microwave oven

Answer

Stopping noise with headphones

Answer

Finding planes with radar

Question 34

The loudness of a sound wave is measured in:

Accepted Answer

Decibels (dB)

Answer

Watts per square meter (W/m²)

Answer

Newtons per square meter (N/m²)

Answer

Hertz (Hz)

Question 35

How does the wavelength of a sound wave change as its frequency increases?

Accepted Answer

Decreases

Answer

Increases

Answer

Remains the same

Answer

Cannot be determined from the given information

Question 36

What is the approximate speed of sound in air at room temperature?

Accepted Answer

340 m/s

Answer

120 m/s

Answer

700 m/s

Answer

1000 m/s

Question 37

Which type of wave can travel through a vacuum?

Accepted Answer

Electromagnetic waves

Answer

Sound waves

Answer

Water waves

Answer

P-waves

Question 38

Which factor does NOT affect the loudness of a sound?

Accepted Answer

Wave velocity

Answer

Amplitude

Answer

Frequency

Answer

Distance from the source

Question 39

What is the phenomenon where two or more waves combine to create a new wave called?

Accepted Answer

Superposition

Answer

Reflection

Answer

Diffraction

Answer

Refraction

Question 40

Which of the following is NOT a characteristic of waves?

Accepted Answer

They always require a medium.

Answer

They have a specific amplitude.

Answer

They transfer energy without the transfer of matter.

Answer

They have a measurable wavelength.

Question 41

What type of wave is sound?

Accepted Answer

Longitudinal wave

Answer

Electromagnetic wave

Answer

Transverse wave

Answer

Surface wave

Question 42

What is the unit of frequency?

Accepted Answer

Hertz (Hz)

Answer

Meters (m)

Answer

Seconds (s)

Answer

Amperes (A)

Question 43

Which application uses ultrasound waves?

Accepted Answer

Medical imaging

Answer

Radar systems

Answer

Underwater communication

Answer

Wireless data transfer

Question 44

Describe the difference between a transverse wave and a longitudinal wave.

Accepted Answer

Transverse waves move particles perpendicular to the wave direction, while longitudinal waves move particles parallel to the wave direction.

Answer

Transverse waves require a medium, while longitudinal waves do not.

Answer

Transverse waves have a higher frequency than longitudinal waves.

Answer

There is no difference between transverse and longitudinal waves.

Question 45

How does amplitude affect the loudness of a sound?

Accepted Answer

Greater amplitude results in a louder sound.

Answer

Greater amplitude results in a softer sound.

Answer

Amplitude has no effect on loudness.

Answer

Amplitude only affects the pitch of a sound.

Question 46

What is the relationship between wavelength and frequency in a wave?

Accepted Answer

Wavelength is inversely proportional to frequency.

Answer

Wavelength is directly proportional to frequency.

Answer

There is no relationship.

Answer

Wavelength and frequency are independent of each other.

Question 47

Which material is a good conductor of sound?

Accepted Answer

Metal

Answer

Air

Answer

Wood

Answer

Water

Question 48

Define resonance.

Accepted Answer

The tendency of an object to vibrate strongly at a specific frequency when subjected to a force.

Answer

The process by which sound waves are absorbed by a material.

Answer

The phenomenon of sound waves reflecting off a surface.

Answer

The interference of sound waves.

Question 49

What is the relationship between the wavelength and frequency of a wave?

Accepted Answer

Wavelength is inversely proportional to frequency

Answer

Wavelength is directly proportional to frequency

Answer

Wavelength is unrelated to frequency

Answer

Frequency is directly proportional to wavelength

Question 50

What is the approximate speed of sound in air at normal conditions?

Accepted Answer

343 m/s

Answer

299 m/s

Answer

170 m/s

Answer

680 m/s

Question 51

What is the term for the perceived change in pitch of a sound wave due to the motion of its source?

Accepted Answer

Doppler effect

Answer

Resonance

Answer

Reflection

Answer

Refraction

Question 52

How is the loudness of a sound wave related to its amplitude?

Accepted Answer

Directly proportional

Answer

Inversely proportional

Answer

Not related

Answer

Logarithmically proportional

Question 53

How do longitudinal waves and transverse waves move particles differently?

Accepted Answer

Longitudinal waves make particles vibrate forward and backward in the same direction the wave travels, while transverse waves make particles vibrate up and down, perpendicular to the wave's direction.

Answer

Longitudinal waves have a faster vibration rate than transverse waves.

Answer

Longitudinal waves can only travel through solid materials, while transverse waves can travel through solids, liquids, and gases.

Answer

Transverse waves have a high point (crest) and a low point (trough), while longitudinal waves do not.