Question

1. when the ___________ of a sound wave are longer the _____________ will decrease causing the pitch to be __________.
2. when the ___________ of a sound wave are shorter the _____________ will increase causing the pitch to be __________.

Explanation:

Question 2

In sound waves, wavelength and frequency are related (inverse relationship for constant speed: \( v = f\lambda \), where \( v \) is speed, \( f \) is frequency, \( \lambda \) is wavelength). Pitch is related to frequency—lower frequency means lower pitch. So longer wavelengths mean lower frequency and lower pitch.

Using the same wave - speed - frequency - wavelength relationship (\( v = f\lambda \)) and pitch - frequency relationship. Shorter wavelengths mean higher frequency (since \( v \) is constant for a medium), and higher frequency means higher pitch.

Answer:

When the \(\boldsymbol{\text{wavelengths}}\) of a sound wave are longer the \(\boldsymbol{\text{frequency}}\) will decrease causing the pitch to be \(\boldsymbol{\text{lower}}\).

Question 3