Pitch and Frequency
Physics ⇒ Waves and Sound
Pitch and Frequency starts at 7 and continues till grade 12.
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See sample questions for grade 10
A guitar string vibrates at 440 Hz. What is the pitch of the note produced compared to a string vibrating at 220 Hz?
A tuning fork produces a sound of 512 Hz. If another tuning fork produces a sound of 256 Hz, how does the pitch of the first compare to the second?
Describe how the pitch of a sound changes as the frequency increases.
Explain the difference between pitch and loudness of a sound.
A bat emits a sound at 40,000 Hz to locate its prey. Explain why humans cannot hear this sound and relate it to the concept of pitch and frequency.
Explain why the pitch of a siren appears to change as an ambulance passes by an observer, even though the frequency of the siren remains constant at the source.
A scientist is studying the calls of two different species of birds. Bird A produces a call at 3,000 Hz, while Bird B produces a call at 6,000 Hz. If both calls are equally loud, which bird's call will have a higher pitch and why?
A sound wave has a period of 0.002 seconds. Calculate its frequency and state whether its pitch would be considered high or low compared to a sound with a period of 0.01 seconds.
Which of the following best describes the relationship between frequency and pitch?
(1) Directly proportional
(2) Inversely proportional
(3) No relationship
(4) Exponential
Which of the following frequencies is considered ultrasonic?
(1) 15 Hz
(2) 150 Hz
(3) 15,000 Hz
(4) 25,000 Hz
Which of the following has the highest pitch?
(1) A drum
(2) A whistle
(3) A bass guitar
(4) A tuba
Which of the following is NOT a unit of frequency?
(1) Hertz
(2) Cycles per second
(3) Decibel
(4) 1/s
Fill in the blank: A sound with a ______ frequency will have a lower pitch.
Fill in the blank: The ______ the frequency, the higher the pitch of the sound.
Fill in the blank: The frequency of a wave is the number of ______ per second.
Fill in the blank: The human ear can typically hear frequencies between ______ Hz and 20,000 Hz.
A person hears a sound with a frequency of 18,000 Hz. Is this sound within the normal human hearing range?
True or False: The frequency of a sound wave can be measured using an oscilloscope.
True or False: The pitch of a sound can be changed by altering its frequency.
True or False: The pitch of a sound is affected by the medium through which it travels.
