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WorksheetsSound and Interference
Total questions: 20
Worksheet time: 22mins
The number of cycles that are completed per second is called the ________ and is measured in _________.
frequency, Hertz
wavelength, meters
amplitude, meters
period, seconds
Hertz is the unit for ...
loudness
amplitude
speed of a wave
frequency
What determines the loudness of a sound?
Wavelength
Amplitude
Crest
Trough
Frequency
If a sound wave has a high pitch, it has a ___.
high frequency
low frequency
The Doppler effect causes a sound to appear to have a higher pitch when the source of the sound is:
Moving towards the observer
Moving away from the observer
Stationary relative to the observer
Rotating around the observer
When a sound wave source moves away from you, what happens to the pitch you hear?
It increases
It decreases
It remains the same
It fluctuates
What type of interference occurs when two waves meet in such a way that their amplitudes cancel each other out?
Constructive interference
Destructive interference
Refractive interference
Dispersive interference
Which of the following is true about the speed of sound?
It is constant in all media
It is faster in solids than in gases
It is faster in gases than in liquids
It is independent of temperature
Which phenomenon is responsible for the appearance of a rainbow?
Reflection of light in water droplets
Refraction and dispersion of light in water droplets
Diffraction of light around water droplets
Interference of light waves in water droplets
What is the effect of temperature on the speed of sound in air?
The speed increases as temperature increases
The speed decreases as temperature increases
The speed is not affected by temperature
The speed first increases, then decreases with an increase in temperature
What type of interference is represented in this diagram?
Constructive
Destructive
Through which material does sound travel slowest?
Water
Paper
Aluminum
Air
None of the above
When a crest and a trough interfere, what occurs?
They combine to create a higher amplitude wave.
They counteract and the wave stops.
The wave changes into a longitudinal wave.
They combine to create a low amplitude wave.
What type of interference is being shown in the picture?
Constructive
Destructive
What type of interference is occurring in the picture?
Constructive
Destructive
If you are standing in front of this car, the wavelengths nearest you would have a _______ frequency
quieter
louder
higher
lower
Which person will hear a lower pitched sound from the police car and why?
Person A, because the wavelengths are squished shorter as the car approaches
Person A, because the wavelengths are stretched longer as the car approaches
Person B, because the wavelengths are squished shorter as the car approaches
Person B, because the wavelengths are stretched longer as the car approaches
