Question

what happens when the amplitude of a sound wave increases? the wavelength becomes longer. the sound gets louder. the sound gets quieter. the frequency and the speed of the wave increases.

Explanation:

Amplitude of a sound wave is related to the loudness of the sound. A higher amplitude means more energy is carried by the wave, resulting in a louder sound. Wavelength is related to frequency (through the formula \(v = f\lambda\), where \(v\) is the speed of sound, \(f\) is frequency and \(\lambda\) is wavelength) and not directly to amplitude. Frequency of a sound wave (related to pitch) and speed of sound (depends on the medium) are not affected by amplitude.

Answer:

The sound gets louder.