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 9
A guitar string is tightened, causing its frequency to increase. What happens to the pitch of the sound produced?
A sound wave has a frequency of 200 Hz and another has a frequency of 400 Hz. Which one has a shorter wavelength (assuming both travel at the same speed)?
A student hears two notes: one at 300 Hz and one at 600 Hz. Which note has a higher pitch?
A violin string vibrates at 440 Hz. What is the pitch of the sound produced compared to a string vibrating at 220 Hz?
Explain why a child’s voice usually has a higher pitch than an adult’s voice.
If a sound wave has a frequency of 500 Hz, what can you say about its pitch compared to a sound wave of 250 Hz?
If the frequency of a sound wave doubles, what happens to its pitch?
What is the formula to calculate the frequency of a wave if its period is known?
Which of the following animals can hear higher frequencies than humans?
(1) Elephants
(2) Dogs
(3) Whales
(4) Frogs
Which of the following best describes pitch?
(1) The loudness of a sound
(2) The quality of a sound
(3) The highness or lowness of a sound
(4) The speed of a sound wave
Which of the following best describes the frequency of a wave?
(1) The distance between two crests
(2) The number of waves passing a point per second
(3) The height of the wave
(4) The speed of the wave
Which of the following frequencies is in the audible range for humans?
(1) 10 Hz
(2) 100 Hz
(3) 25,000 Hz
(4) 100,000 Hz
Fill in the blank: A sound with a frequency below 20 Hz is called ________.
Fill in the blank: A sound with a low frequency will have a ________ pitch.
Fill in the blank: The ________ the frequency, the higher the pitch.
Fill in the blank: The ________ the frequency, the shorter the wavelength (for a constant speed of sound).
A sound wave has a frequency of 20,000 Hz. Is this sound audible to most humans?
True or False: The frequency of a sound wave can be changed by changing the length or tension of the vibrating object.
True or False: The frequency of a sound wave is measured in Hertz (Hz).
True or False: The frequency of a sound wave is the number of vibrations per second.
