The frequency of a sound wave is directly related to its?

• A. Loudness
• B. Timbre
• C. Resonance
• D. Pitch

Answer: (D)

Frequency measures how often a sound wave repeats each second, and our ears interpret that rate as pitch—the highness or lowness of a tone. When the frequency goes up, the perceived pitch becomes higher; when it goes down, the pitch drops. Loudness depends on amplitude (how strong the vibrations are), timbre is the quality or color of the sound determined by the waveform's harmonic content, and resonance is about an object's natural tendency to vibrate at certain frequencies. So the frequency of a sound wave is directly related to its pitch.