Physics Sound Waves Quiz
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Questions and Answers

What is the term for the distance between the peaks or troughs of a wave?

  • Amplitude
  • Wavelength (correct)
  • Frequency
  • Oscillation

Frequency refers to the distance traveled by a wave.

False (B)

What is the mathematical relationship that relates speed, wavelength, and frequency?

c = λ · f

The relationship between frequency and wavelength can be expressed mathematically as $c = ext{______} imes f$.

<p>λ</p> Signup and view all the answers

Match the following terms with their definitions:

<p>Wavelength = The number of oscillations per second Frequency = Distance between wave peaks or troughs Speed of Propagation = How fast a wave travels Oscillation = The repeating motion of a wave</p> Signup and view all the answers

What is the unit of measurement for frequency?

<p>Hertz (A)</p> Signup and view all the answers

The period of an oscillation is equal to its frequency.

<p>False (B)</p> Signup and view all the answers

What is the period of a tuning fork that has a frequency of 440 Hz?

<p>0.00227 seconds</p> Signup and view all the answers

A tuning fork producing the note A has a frequency of __________.

<p>440 Hz</p> Signup and view all the answers

What is the frequency of a sound wave in air with a wavelength of 2 meters?

<p>170 Hz (D)</p> Signup and view all the answers

The period of a sound wave in air with a frequency of 170 Hz is approximately 0.006 seconds.

<p>True (A)</p> Signup and view all the answers

What is the wavelength of a sound wave in water when the speed is 1400 m/s and the frequency is 350 Hz?

<p>4 m</p> Signup and view all the answers

The oscillation period for a sound wave with a frequency of 350 Hz is approximately _____ seconds.

<p>0.003</p> Signup and view all the answers

Match the following properties of sound to their values:

<p>Speed in air = 346 m/s Frequency of sound wave in air = 170 Hz Speed in water = 1400 m/s Period of a sound wave with frequency 350 Hz = 0.00286 s</p> Signup and view all the answers

What is the frequency when the speed of sound is 1400 m/s and the wavelength is 4.2 m?

<p>333.33 Hz (D)</p> Signup and view all the answers

The speed of sound in water is 520.42 m/s.

<p>False (B)</p> Signup and view all the answers

What is the period (T) when the frequency is 333.33 Hz?

<p>0.003 s</p> Signup and view all the answers

The formula to find the speed of sound (C) given frequency and wavelength is C = f × ______.

<p>λ</p> Signup and view all the answers

Match the variables with their corresponding descriptions:

<p>C = Speed of sound f = Frequency λ = Wavelength T = Period</p> Signup and view all the answers

What is the frequency of a tone that has a duration of 0.025s?

<p>40 Hz (A)</p> Signup and view all the answers

The wavelength of a sound with a frequency of 40 Hz in air is 8.5 meters.

<p>True (A)</p> Signup and view all the answers

How many vibrations does a tuning fork produce in 20 seconds if its frequency is 600 Hz?

<p>12000</p> Signup and view all the answers

The wavelength of the sound produced by a tuning fork vibrating at 600 Hz is approximately ______ m.

<p>0.5667</p> Signup and view all the answers

Match the following quantities with their calculated results:

<p>Duration of tone 0.025s = 40 Hz Tuning fork vibrations in 20s = 12000 Frequency of sound 600 Hz = 0.5667 m Wavelength of tone with frequency 40 Hz = 8.5 m</p> Signup and view all the answers

Flashcards

Sound Wave

Sound can be represented as a wave pattern.

Wavelength

Distance between wave peaks or troughs.

Frequency

Number of oscillations per second.

Relationship: Wavelength & Frequency

Wavelength and frequency are inversely related.

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Speed of sound formula

Speed of a wave is calculated by multiplying wavelength by frequency (c = λf).

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Frequency (f)

The number of oscillations (or cycles) per second.

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Unit of Frequency

Hertz (Hz)

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Period(T)

The time taken for one complete oscillation.

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Relationship between Period and Frequency

Period is the reciprocal of frequency.

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Complete Oscillation

When the initial position is reached again.

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Sound speed in air

Sound travels at approximately 346 m/s in air.

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Sound frequency calculation (air)

Frequency (Hz) = Speed (m/s) / Wavelength (m).

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Sound wavelength calculation (water)

Wavelength (m) = Speed (m/s) / Frequency (Hz).

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Sound period (air)

Time for one complete oscillation, calculated as 1/frequency.

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Sound period (water)

Time for one cycle, equal to 1 / frequency.

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Frequency calculation (Hz)

Frequency is calculated by dividing the number of cycles by the time taken.

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Wavelength calculation (m)

Wavelength is calculated by dividing the speed of sound (c) by the frequency (f).

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Sound Speed in air (c)

Speed of sound in air is approximately 340 m/s.

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Frequency of 40 Hz

Calculated when a tone has a duration of 0.025 seconds.

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Wave length of 8.5 meters

Calculated when a tone has a frequency of 40 Hz

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Speed of sound in water

The rate at which sound waves travel in water, measured in meters per second.

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Wavelength (λ)

The distance between two consecutive crests or troughs of a wave.

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Wave speed calculation formula

Speed = Frequency × Wavelength (C = f × λ).

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