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The particles in sound waves:

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1 point
move parallel to the direction of the wave.
move perpendicular to the direction of the wave.
2. How do you measure the wavelength of a longitudinal wave?
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1 point
the distance from a rarefaction to a compression
the length of a rarefaction
the length of a compression
the length of one full compression and one full rarefaction
3. Why do sound waves travel faster through warm air?
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1 point
The molcules in warm air move slower.
The molecules in cold air move faster.
The molecules in warm air move faster.
4. How does the amplitude of a wave affect sound?
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1 point
the higher the amplitude, the louder the sound
the lower the amplitude, the louder the sound
the higher the amplitude, the higher the pitch
the lower the amplitude, the higher the pitch
5. What happens to the wavelength of a wave when energy increases?
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1 point
Wavelength becomes longer.
Wavelength becomes shorter.
Wavelength is not impacted by the amount of energy.

1 answer

Here are the answers to your questions regarding sound waves:

  1. The particles in sound waves:

    • Answer: move parallel to the direction of the wave. (Sound waves are longitudinal waves, meaning the particle displacement is in the same direction as the wave propagation.)

  2. How do you measure the wavelength of a longitudinal wave?

    • Answer: the length of one full compression and one full rarefaction. (Wavelength is defined as the distance between two corresponding points in consecutive cycles.)

  3. Why do sound waves travel faster through warm air?

    • Answer: The molecules in warm air move faster. (In warmer temperatures, molecules have more energy and move more quickly, which facilitates faster transmission of sound.)

  4. How does the amplitude of a wave affect sound?

    • Answer: the higher the amplitude, the louder the sound. (Amplitude relates to the energy of the wave; higher amplitude means greater energy and a louder sound.)

  5. What happens to the wavelength of a wave when energy increases?

    • Answer: Wavelength becomes shorter. (As energy increases, the frequency of the wave typically increases while the speed of sound remains relatively constant in a medium, resulting in a shorter wavelength.)

Feel free to ask if you have more questions or need further clarification!