Waves and Sound: Interactive Learning Quizzes for 7th Grade Science

Question 1

Which of these is NOT a characteristic shared by all types of waves?

Accepted Answer

Color

Answer

Frequency

Answer

Speed

Answer

Wavelength

Question 2

Which of these is not an electromagnetic wave?

Accepted Answer

Sound waves

Answer

Radio waves

Answer

Microwaves

Answer

Ultraviolet waves

Question 3

How does a sound wave travel through the air?

Accepted Answer

By compressing and expanding the air particles.

Answer

By creating an electrical current.

Answer

By generating a magnetic field.

Answer

By changing the temperature of the air.

Question 4

Which of the following materials is a good conductor of sound?

Accepted Answer

Metal

Answer

Air

Answer

Water

Answer

Wood

Question 5

What is the term for the sensation of sound that is caused by the vibration of objects?

Accepted Answer

Pitch

Answer

Volume

Answer

Timbre

Answer

Loudness

Question 6

What is the electromagnetic spectrum?

Accepted Answer

The array of all possible wavelengths of electromagnetic radiation.

Answer

The visible part of the light spectrum.

Answer

The radio waves utilized in communication.

Answer

The X-rays used in medical imaging.

Question 7

Which of the following is not a defining characteristic of waves?

Accepted Answer

Weight

Answer

Wavelength

Answer

Frequency

Answer

Amplitude

Question 8

Which type of wave requires a physical medium, such as air or water, to propagate?

Accepted Answer

Sound wave

Answer

Electromagnetic wave

Answer

Gravitational wave

Answer

Light wave

Question 9

Which of the following frequencies corresponds to the highest perceived pitch?

Accepted Answer

1000 Hz

Answer

50 Hz

Answer

200 Hz

Answer

500 Hz

Question 10

Approximately what is the speed of sound traveling through air at room temperature?

Accepted Answer

340 m/s

Answer

120 m/s

Answer

600 m/s

Answer

1000 m/s

Question 11

Which of the following musical instruments primarily produces sound through the vibration of a stretched membrane?

Accepted Answer

Drum

Answer

Flute

Answer

Violin

Answer

Piano

Question 12

What is the scientific term for the bending of waves around an obstacle?

Accepted Answer

Diffraction

Answer

Reflection

Answer

Refraction

Answer

Interference

Question 13

Which type of electromagnetic radiation is used in microwave ovens to heat food?

Accepted Answer

Microwaves

Answer

Ultraviolet

Answer

Radio waves

Answer

X-rays

Question 14

Which of the following is a feature of transverse waves?

Accepted Answer

Particles oscillate perpendicular to the direction of wave propagation

Answer

Particles oscillate parallel to the direction of wave propagation

Answer

Waves can only travel through liquids

Answer

Waves can only travel through solids

Question 15

What is the name given to the energy carried by waves?

Accepted Answer

Intensity

Answer

Power

Answer

Amplitude

Answer

Wavelength

Question 16

Which of the following describes a wave?

Accepted Answer

Has amplitude, frequency, and wavelength

Answer

Can travel through all types of matter

Answer

Always moves in a straight line

Answer

Is the transfer of matter

Question 17

What is the Doppler effect?

Accepted Answer

The change in pitch of a sound as it moves towards or away from an observer

Answer

The reflection of a sound wave off a surface

Answer

The bending of a sound wave as it passes through a boundary

Answer

The interference of two sound waves

Question 18

What is the range of colors humans can see called?

Accepted Answer

The visible spectrum

Answer

The electromagnetic spectrum

Answer

The sound spectrum

Answer

The light spectrum

Question 19

How does temperature affect the speed of sound in a medium?

Accepted Answer

The speed of sound increases with temperature

Answer

The speed of sound decreases with temperature

Answer

The speed of sound is unaffected by temperature

Answer

The relationship depends on the medium

Question 20

What happens when two waves of the same frequency and phase combine?

Accepted Answer

Constructive interference

Answer

Destructive interference

Answer

Diffraction

Answer

Reflection

Question 21

Which of the following properties describes the distance between two consecutive crests or troughs of a wave?

Accepted Answer

Wavelength

Answer

Amplitude

Answer

Frequency

Answer

Period

Question 22

Which of the following is NOT a property of sound waves?

Accepted Answer

They move through a vacuum.

Answer

They need a medium to travel.

Answer

They are mechanical.

Answer

They can be reflected.

Question 23

At room temperature, what is the velocity of sound in air?

Accepted Answer

343 m/s

Answer

299,792,458 m/s

Answer

1,087 ft/s

Answer

767 mph

Question 24

How are the wavelength and frequency of a wave related?

Accepted Answer

Wavelength is inversely proportional to frequency.

Answer

Wavelength is proportional to frequency.

Answer

There is no relationship between wavelength and frequency.

Answer

The relationship between wavelength and frequency depends on the medium through which the wave travels.

Question 25

What causes the Doppler effect?

Accepted Answer

The change in wave frequency due to the motion of the source or observer.

Answer

The change in wave wavelength due to the motion of the source or observer.

Answer

The change in wave amplitude due to the motion of the source or observer.

Answer

The change in wave speed due to the motion of the source or observer.

Question 26

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

Accepted Answer

A wave that oscillates back and forth between two points.

Answer

A wave that travels in one direction only.

Answer

A wave that has a constant amplitude.

Answer

A wave that has a constant wavelength.

Question 27

How does reflection differ from refraction?

Accepted Answer

Reflection is the bouncing back of a wave from a surface, while refraction is the bending of a wave as it passes from one medium to another.

Answer

Refraction is the bouncing back of a wave from a surface, while reflection is the bending of a wave as it passes from one medium to another.

Answer

Reflection and refraction are the same phenomenon.

Answer

Reflection and refraction are both types of diffraction.

Question 28

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

Accepted Answer

They are inversely proportional.

Answer

They are directly proportional.

Answer

They are not related.

Answer

They are proportional only in certain conditions.

Question 29

Identify the type of wave in which particles move perpendicular to the wave's direction of travel.

Accepted Answer

Transverse wave

Answer

Longitudinal wave

Answer

Surface wave

Answer

Mechanical wave

Question 30

What fundamental difference exists between sound waves and electromagnetic waves?

Accepted Answer

Sound waves need a medium to travel, while electromagnetic waves do not.

Answer

Sound waves can be polarized, while electromagnetic waves cannot.

Answer

Electromagnetic waves have a higher frequency than sound waves.

Answer

Sound waves are mechanical waves, while electromagnetic waves are not.

Question 31

Approximately, what is the speed of sound in air at room temperature?

Accepted Answer

343 m/s

Answer

299,792 km/s

Answer

10 km/s

Answer

1000 m/s

Question 32

What is the unit of frequency in the International System of Units (SI)?

Accepted Answer

Hertz (Hz)

Answer

Meter (m)

Answer

Second (s)

Answer

Kelvin (K)

Question 33

What happens as the frequency of a wave decreases?

Accepted Answer

Wavelength increases

Answer

Wavelength decreases

Answer

Amplitude increases

Answer

Speed increases

Question 34

Which of these is NOT a factor affecting the speed of a wave?

Accepted Answer

Frequency of the wave

Answer

Temperature of the medium

Answer

Density of the medium

Answer

Pressure of the medium

Question 35

How is the pitch of a sound related to the frequency of the sound wave?

Accepted Answer

Higher frequency means higher pitch

Answer

Higher frequency means lower pitch

Answer

Higher frequency means louder sound

Answer

Pitch is not related to frequency

Question 36

Which type of wave can travel through a vacuum?

Accepted Answer

Electromagnetic

Answer

Mechanical

Answer

Sonic

Answer

Seismic

Question 37

Which color of visible light has the longest wavelength?

Accepted Answer

Red

Answer

Orange

Answer

Yellow

Answer

Green

Question 38

What is the term for the distance between two consecutive crests or troughs of a wave?

Accepted Answer

Wavelength

Answer

Frequency

Answer

Amplitude

Answer

Phase

Question 39

What is a wave? Explain its main characteristics.

Accepted Answer

A disturbance that moves through a medium, transferring energy without permanently displacing the medium.

Answer

A ripple on a pond's surface.

Answer

A back-and-forth motion that makes objects vibrate.

Answer

A repeating pattern in space or time.

Question 40

What type of wave is sound?

Accepted Answer

Longitudinal wave

Answer

Transverse wave

Answer

Surface wave

Answer

Standing wave

Question 41

Which part of the electromagnetic spectrum has the longest wavelength?

Accepted Answer

Radio waves

Answer

Gamma rays

Answer

X-rays

Answer

Ultraviolet radiation

Question 42

Which of the following materials is a good conductor of sound waves?

Accepted Answer

Water

Answer

Air

Answer

Wood

Answer

Plastic

Question 43

What device is used to measure the intensity of sound?

Accepted Answer

Decibel meter

Answer

Oscilloscope

Answer

Voltmeter

Answer

Spectrometer

Question 44

Which of the following factors does NOT affect the speed of sound?

Accepted Answer

Wave frequency

Answer

Temperature

Answer

Density

Answer

Wave amplitude

Question 45

What is the process called when sound waves bounce back from a surface?

Accepted Answer

Reflection

Answer

Refraction

Answer

Diffraction

Answer

Interference

Question 46

Which of the following is NOT a property of waves?

Accepted Answer

Mass

Answer

Amplitude

Answer

Frequency

Answer

Wavelength

Question 47

Which type of wave exhibits particle movement parallel to the direction of wave propagation?

Accepted Answer

Longitudinal wave

Answer

Transverse wave

Answer

Surface wave

Answer

Electromagnetic wave

Question 48

How is the amplitude of a wave related to its energy?

Accepted Answer

Amplitude is proportional to the square of the energy.

Answer

Amplitude is inversely proportional to the energy.

Answer

Amplitude is independent of the energy.

Question 49

Which factor primarily influences the speed of sound in a medium?

Accepted Answer

Temperature

Answer

Shape

Answer

Color

Answer

Size

Question 50

What phenomenon describes the return of a wave after encountering a surface?

Accepted Answer

Reflection

Answer

Refraction

Answer

Diffraction

Answer

Interference

Question 51

In the visible spectrum, which color of light has the longest wavelength?

Accepted Answer

Red

Answer

Green

Answer

Violet

Answer

Blue

Question 52

What is the unit commonly used to measure sound intensity?

Accepted Answer

Decibel (dB)

Answer

Meter (m)

Answer

Hertz (Hz)

Question 53

Describe the Doppler effect.

Accepted Answer

The change in frequency of a wave due to relative motion between the source and observer.

Answer

The increase in wavelength of a wave as it diffracts around an obstacle.

Answer

The decrease in amplitude of a wave as it travels through a medium.

Question 54

Which of the following applications harnesses the principles of sound waves?

Accepted Answer

Ultrasound

Answer

CT scan

Answer

MRI

Answer

X-ray