WorksheetsAEPHY Waves
Total questions: 23
Worksheet time: 12mins
Name the wave property indicated by the line between points D and H.
Wavelength
Frequency
Amplitude
Period
Points A and G are 3.6 cm apart. What is the wavelength of this wave?
2.40 x 10-2 m
1.20 x 10-2 m
5.40 x 10-3 m
3.60 x 10-3 m
It takes 0.09 s for point C to move to point F. Calculate the frequency of this wave.
0.09 Hz
1.20 Hz
0.833 Hz
0.456 Hz
Rank these sound waves by pitch.
D > A > B > C
A > C > B > D
C > B > A > D
A > D > B > C
Rank these sound waves by volume
D > A > B > C
A > C > B > D
C > B > A > D
A > D > B > C
Which statement about sound waves is true?
In a compression, particle displacement is zero, pressure is at a maximum
In a compression, particle displacement and pressure are both at a maximum
In a rarefaction, particle displacement is zero, pressure is at a maximum
In a rarefaction, particle displacement and pressure are both at a minimum
A light source has a measured intensity of 120 W m-2 at a distance of 20 m. Calculate the intensity at 5 m from the source.
1920 W m-2
1.92 x 103 W m-2
96 W m-2
480 W m-2
Which of the following statements is true?
Wavefronts are always drawn one wavelength apart.
Wavefronts show the distance between successive rays.
Wavefronts are parallel to the direction of wave motion.
Wavefronts are always drawn one second apart.
Which statement about the speed of sound waves is false?
Sound waves always travel faster through materials with higher densities.
Sound waves generally travel faster through solids compared to gases.
The speed of sound is controlled by the density and elastic properties of a material.
The speed of sound is several orders of magnitude slower than the speed of light
What is the Doppler Effect?
A change in frequency due to the relative motion of a wave source and an observer
When a wave overlaps and constructively interferes with another wave
When a wave reflects back and interferes with itself
When a wave bends due to traveling through a different medium
You are standing on the side of the road when a police car races past you with its siren on. After the police car passes you, what happens to the pitch of the siren?
It increases
It decreases
It turns red
There is no change
A sound pulse is played from a speaker 100 m away across an arena. If the ceiling is 37.5 m above the speaker, calculate the time delay between hearing the sound and the echo reflected off the ceiling.
0.0723 s
0.108 s
0.361 s
0.217 s
Rank materials A, B and C from lowest to highest refractive index.
A < B < C
A < C < B
C < B < A
B < C < A
If material A is air, calculate the critical angle for light moving from B into A.
48.5o
1.33
There is no critical angle
32.5o
In the diagram, which letter represents the angle of incidence?
A
B
C
D
Which combination will produce the greatest amount of diffraction?
Smaller gap, larger wavelength
Smaller gap, higher frequency
Larger gap, larger wavelength
Larger gap, lower frequency
Which of the following statements is NOT correct?
Resonance is the increase in the amplitude of vibrations when energy is continuously added at the same frequency.
Resonance always results in the formation of stationary waves.
Resonance can be both a positive or a negative phenomenon.
Resonance occurs when energy is transferred between two objects vibrating at the same frequency.
Which of the following statements is NOT correct?
Stationary waves form when two identical waves travelling in opposite directions interfere with each other.
When two waves moving in opposite directions, they will only form stationary waves if their frequencies and amplitudes are the same.
The amplitude of a stationary wave at antinodes is larger than the original waves due to constructive interference.
The frequency of stationary waves is twice that of the original waves due to constructive interference.
Two open pipes of different lengths both resonate when a 512 Hz tuning fork is placed near one of the ends. Which of the following statements is false?
As both pipes are resonating, a stationary wave is being formed in each of them.
The frequency of the stationary waves in each pipe is the same.
The harmonic number of stationary waves in pipe is the same.
The stationary waves in each pipe both have antinode at each end.
A key on a piano produces a note with a frequency of 480 Hz. This results in the formation of a stationary wave in the string of a guitar sitting nearby. Which of the following statements is true?
The stationary wave in the string has a frequency of 480 Hz.
The string must be vibrating in its first harmonic.
Using the information provided it is possible to calculate the length of the guitar string.
The wavelength of the stationary wave in the guitar string will be the same as the the sound wave travelling through the air.
What number harmonic is shown for this string?
2
3
4
It's not a whole number
A harp string is 90 cm long and is vibrating in its 4th harmonic and produces a note with a frequency of 1000 Hz. Calculate the speed of sound along the string.
450 m/s
900 m/s
3600 m/s
346 m/s
Why is the spectrum of light separated into its components of color when white light is directed to a prism?
Because light reflects off the prism's surface
Each wavelength of light that makes up white light refracts by a different amount
The white light is absorbed by the prism and the separate colours are reflected back differently
The light speeds up as it moves from air into the denser plastic material
