MEDIUM
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The loudness of a lion’s roar is much greater than a bird’s chirp. What causes the difference in the loudness?

Important Questions on Sound

MEDIUM
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
What is the unit of sound? 
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration

Define the term loudness.

HARD
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
If a key of a piano is first struck gently and then much harder, how will the loudness and pitch of the sound change?
MEDIUM
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
State the unit of loudness. Mention the effect of different loudness levels on human ears.
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
Define the characteristic of a sound that distinguishes a shrill sound from a hoarse sound.
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
Define the term frequency.
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
Write two differences between loudness and pitch.
MEDIUM
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
MEDIUM
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration

Define the term pitch.

MEDIUM
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
The loudness of a sound depends on its amplitude. Give reason.
MEDIUM
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
A person hears two sounds one of 60 dB, 100 Hz and other of 45 dB, 700 Hz. Which sound will the person perceive to be louder?
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
How are loudness and amplitude related?
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
Define the term amplitude.
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration

The waveforms of some sounds are given below. Answer the questions that followed.
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 Identify the sounds with the same loudness.

HARD
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
Why does the pitch of the sound increases when a nail is hammered into a wall?
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
Name three characteristics of sound.
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
How is it possible to distinguish between sounds produced by different instruments tuned to the same frequency?
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?
MEDIUM
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration
The distance between two adjacent threads in a screw is called its _____.
EASY
Science>Physics>Sound>Amplitude, Time Period and Frequency of a Vibration

Define the term time period.