Question

sound waves data
sound waves data

	wavelength	frequency	amplitude
sound wave #2	2.5 m	160 hz	50 db

2 how could the student manipulate (change) the sounds to make them match in pitch but make sound wave #1 louder than sound wave #2?
a the student should make the waves have the same amplitude but sound wave #1 have a higher frequency
b the student should make the waves have the same frequency but make sound wave #1 have a higher amplitude.
c the student should make the waves have the same wavelength but sound wave #1 have a higher frequency.
d the student should make the waves have the same frequency but have sound wave #2 have a higher wavelength.

Explanation:

To solve this, we recall: Pitch is related to frequency (same frequency means same pitch), and loudness is related to amplitude (higher amplitude means louder). The goal is same pitch (same frequency) and sound wave #1 louder (higher amplitude than #2).

• Option A: Same amplitude would mean same loudness, and different frequency means different pitch. Eliminate.
• Option B: Same frequency (same pitch) and sound wave #1 higher amplitude (louder). This fits.
• Option C: Same wavelength implies same frequency (since \( v = f\lambda \), same \( \lambda \) and \( v \) (speed of sound) means same \( f \)), but "higher frequency" contradicts same wavelength. Also, loudness is about amplitude, not frequency. Eliminate.
• Option D: Same frequency (same pitch) but "sound wave #2 have a higher wavelength" doesn't address amplitude (loudness). Eliminate.

Answer:

B. The student should make the waves have the same frequency but make sound wave #1 have a higher amplitude.