Waves

Question 1

What is a wave?

Answer 1

A wave is a disturbance that transfers energy through space or matter.

Question 2

True or False: Sound waves are longitudinal waves.

Answer 2

True

Question 3

What type of wave is light?

Answer 3

Light is a transverse wave.

Question 4

Fill in the blank: The speed of sound in air is approximately _____ meters per second.

Answer 4

343

Question 5

What is the frequency of a wave?

Answer 5

The frequency is the number of waves that pass a point in one second.

Question 6

What is the relationship between frequency and wavelength?

Answer 6

Frequency and wavelength are inversely related; as one increases, the other decreases.

Question 7

What is amplitude?

Answer 7

Amplitude is the maximum displacement of points on a wave from its rest position.

Question 8

True or False: The higher the amplitude, the louder the sound.

Answer 8

True

Question 9

What is the unit of frequency?

Answer 9

The unit of frequency is Hertz (Hz).

Question 10

What phenomenon occurs when waves bend around obstacles?

Answer 10

Diffraction

Question 11

What is the formula to calculate the speed of a wave?

Answer 11

Speed = Frequency x Wavelength

Question 12

What is the range of human hearing in Hertz?

Answer 12

20 Hz to 20,000 Hz

Question 13

True or False: Light can travel through a vacuum.

Answer 13

True

Question 14

What is reflection in terms of waves?

Answer 14

Reflection is the bouncing back of a wave when it hits a barrier.

Question 15

What is refraction?

Answer 15

Refraction is the bending of waves as they pass from one medium to another.

Question 16

What is the electromagnetic spectrum?

Answer 16

The electromagnetic spectrum is the range of all types of electromagnetic radiation.

Question 17

What is the primary source of natural light on Earth?

Answer 17

The Sun

Question 18

Fill in the blank: The color of light is determined by its _____ .

Answer 18

wavelength

Question 19

What does the term ‘pitch’ refer to in sound?

Answer 19

Pitch refers to how high or low a sound is perceived, related to frequency.

Question 20

What is a sound wave’s wavelength?

Answer 20

The distance between successive crests or troughs of a wave.

Question 21

True or False: Sound travels faster in water than in air.

Answer 21

True

Question 22

What is an example of a transverse wave?

Answer 22

Light wave or waves on a string.

Question 23

What is the Doppler effect?

Answer 23

The change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Question 24

What is constructive interference?

Answer 24

Constructive interference occurs when two waves combine to make a wave with a larger amplitude.

Question 25

What is destructive interference?

Answer 25

Destructive interference occurs when two waves combine to make a wave with a smaller amplitude.

Question 26

Fill in the blank: The speed of light in a vacuum is approximately _____ meters per second.

Answer 26

299,792,458

Question 27

What is a medium in the context of waves?

Answer 27

A medium is the substance through which a wave travels.

Question 28

What is an example of a longitudinal wave?

Answer 28

Sound wave

Question 29

True or False: All waves require a medium to travel.

Answer 29

False

Question 30

What is the term for the lowest frequency of a wave?

Answer 30

Fundamental frequency

Question 31

What is the phenomenon called when light separates into different colors?

Answer 31

Dispersion

Question 32

What is the threshold of hearing?

Answer 32

The minimum sound level that the average human ear can hear, usually around 0 dB.

Question 33

What is the formula for calculating wavelength?

Answer 33

Wavelength = Speed / Frequency

Question 34

What is a wavefront?

Answer 34

A wavefront is the surface over which an oscillation has a constant phase.

Question 35

What is the principle of superposition?

Answer 35

The principle of superposition states that when two or more waves overlap, the resulting wave is the sum of the individual waves.

Question 36

What is the frequency range of visible light?

Answer 36

Approximately 430 THz to 750 THz.

Question 37

What is the term for the highest point of a wave?

Answer 37

Crest

Question 38

What is the term for the lowest point of a wave?

Answer 38

Trough

Question 39

What does amplitude affect in sound waves?

Answer 39

Amplitude affects the loudness of the sound.

Question 40

What is the term for the bending of light around corners?

Answer 40

Diffraction

Question 41

True or False: Higher frequency sound waves have longer wavelengths.

Answer 41

False