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 7
A person increases the volume on a speaker. What happens to the amplitude of the sound waves produced?
A sound is measured at 90 dB. Is this considered loud or soft?
A sound wave has an amplitude of 2 units. Another has an amplitude of 4 units. Which is louder and by how much?
A sound wave has an amplitude of 3 units. If the amplitude is increased to 6 units, by what factor does the loudness increase?
A teacher claps softly and then loudly. What changes in the sound wave between the two claps?
Describe the relationship between amplitude and loudness.
Explain why shouting is louder than whispering.
Explain why two people may perceive the same sound as having different loudness.
If a sound is measured at 20 dB and another at 40 dB, which is louder and by how much?
If a sound is too loud, what can you do to protect your ears?
If the amplitude of a sound wave is reduced, what happens to its loudness?
If two sounds have the same frequency but different amplitudes, which one will be louder?
What happens to the loudness of a sound if its amplitude is doubled?
What is loudness in sound?
