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.

Wavelength becomes shorter.