Team - 1
A sound wave has a frequency of 100 Hz and a wavelength of 2 m. Find its speed.
200 m/s
What is sound in your own words?
Keywords:-
Form of energy
Vibrations
Produces hearing sensations
A wave has a wavelength of 1 m and a speed of 340 m/s. Find its frequency.
340 Hz
What is the SI unit of frequency?
Hertz (Hz)
The speed of sound is 320 m/s and its frequency is 80 Hz. Find its wavelength.
4 m
What does the formula v=fλ help us calculate?
Sound and its substitution properties.
A tuning fork produces a wavelength of 0.4 m. If the sound travels at 320 m/s, find its frequency.
800 Hz
What does frequency tell us about a sound wave?
How high or low pitched a sound wave is.
The frequency of a wave is 250 Hz and its speed is 500 m/s. Find the wavelength.
2 m
What is meant by the wavelength of a wave?
The distance in which a sound wave travels in.
A sound wave in water travels at 1500 m/s. If its frequency is 300 Hz, find the wavelength.
5 m
What are infrasonic waves?
Waves that are too low for the human ear to hear [<20kHz].
The wavelength of a sound wave is 0.3 m and frequency is 1200 Hz. Find its speed.
360 m/s
What is the audible frequency range of human hearing?
In between 20 Hertz and 20,000 Hertz.
Sound in a solid travels at 5000 m/s. If the wavelength is 0.5 m, calculate the frequency.
10,000 Hz
In what way did Pythagoras’ idea of sound having mathematical ratios support the formula relating speed, frequency, and wavelength?
Pythagoras’ ratios showed that sound follows mathematical patterns, hence, becoming fundamental in a sound.
A wave has a wavelength of 0.15 m. If its frequency increases from 1000 Hz to 1200 Hz, what is its new speed?
180 m/s
Why do ultrasonic waves have higher frequencies than audible waves?
Because they vibrate many more times per second than sounds that humans can hear normally.
A sound wave travels 680 m in 2 seconds. If its wavelength is 2 m, find its frequency.
170 Hz
How does Heinrich Hertz’s discovery of electromagnetic waves help us better understand the idea of measuring sound using the unit “hertz”?
Hertz showed that waves have definite, countable frequencies, so naming the unit after him reminds us of his discovery concerning this.
A source produces a sound of wavelength 0.25 m. If the speed of sound changes from 330 m/s to 340 m/s, calculate the new frequency.
1360 Hz
How does Einstein’s explanation of waves carrying energy in small packets help deepen our understanding of why frequency is important?
Einstein showed that higher frequency waves carry more energy, helping us understand that frequency isn’t just a value—it tells us how energetic a wave can be.
The frequency of a wave is 900 Hz. It travels 180 m in 0.2 seconds. Find the wavelength.
0.2 m
How does the history of sound—starting with Pythagoras, moving through Hertz, and later Einstein—show the growing scientific understanding of what sound really is?
Pythagoras discovered sound follows patterns, Hertz measured wave frequency and gave it a unit, and Einstein explained energy in waves, showing how sound evolved into a fully scientific concept.
A sound wave in water has a wavelength of 0.25 m and a frequency of 600 Hz. Find the speed of sound in water.
150 m/s