Loudness and Amplitude
Physics ⇒ Waves and Sound
Loudness and Amplitude starts at 7 and continues till grade 12.
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See sample questions for grade 8
A drum is hit softly and then hard. Which hit produces a sound wave with higher amplitude?
A person hears a sound at 30 decibels and another at 60 decibels. How much more intense is the second sound?
A sound wave has an amplitude of 0.5 cm. What is its amplitude in millimeters?
A sound wave has an amplitude of 2 units. Another has an amplitude of 4 units. Which is louder?
A sound wave has an amplitude of 3 units. If the amplitude is increased to 6 units, by what factor does the energy increase?
A student claps their hands softly and then loudly. What changes in the sound wave?
Describe how the amplitude of a sound wave can be increased.
Describe what happens to the loudness of a sound if the amplitude is halved.
Explain the difference between amplitude and loudness.
Explain why a loudspeaker produces louder sound when the volume is increased.
Explain why shouting is louder than whispering.
Explain why two sounds with the same frequency can have different loudness.
If a sound is measured at 80 decibels and another at 60 decibels, which is louder and by how much?
If a sound wave has a small amplitude, how will it be perceived?
If the amplitude of a sound wave is doubled, what happens to its loudness?
If the amplitude of a sound wave is tripled, by what factor does the energy increase?
What is the relationship between the amplitude of a sound wave and its loudness?
