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 8
A guitar string vibrates 440 times per second. What is its frequency?
A sound wave completes 600 cycles in 3 seconds. What is its frequency?
A sound wave has a frequency of 1,000 Hz. How many cycles does it complete in 0.5 seconds?
A sound wave has a frequency of 2,000 Hz. What is its period?
A guitar string vibrates 440 times per second. What is its frequency?
A sound wave completes 600 cycles in 3 seconds. What is its frequency?
A sound wave has a frequency of 1,000 Hz. How many cycles does it complete in 0.5 seconds?
A sound wave has a frequency of 2,000 Hz. What is its period?
Which of the following animals can hear ultrasonic sounds?
(1) Humans
(2) Dogs
(3) Elephants
(4) Whales
Which of the following best describes frequency?
(1) The speed of sound
(2) The number of waves passing a point per second
(3) The loudness of a sound
(4) The wavelength of a sound
Which of the following frequencies is in the audible range for humans?
(1) 5 Hz
(2) 50 Hz
(3) 25,000 Hz
(4) 100,000 Hz
Which of the following frequencies would produce the highest pitch?
(1) 250 Hz
(2) 500 Hz
(3) 750 Hz
(4) 1000 Hz
Fill in the blank: A sound with a frequency of 20,000 Hz is called ________ sound.
Fill in the blank: The frequency of a sound wave is ________ proportional to its period.
Fill in the blank: The frequency of a sound wave is the ________ of vibrations per second.
Fill in the blank: The human ear can usually hear sounds with frequencies between ________ Hz and 20,000 Hz.
If a sound has a frequency of 10 Hz, is it audible to humans?
True or False: All sounds with the same frequency have the same pitch.
True or False: Frequency and wavelength are directly proportional.
True or False: Low-frequency sounds have a low pitch.
