Animals like elephants communicate in _______ sounds.

Sound which has less frequency are called as ________ sounds

Sounds which have frequencies more than 20kHz are called ultrasounds.

A sound wave traveling at a speed of 1000 m/s has a frequency of 1 kHz. Its wavelength is ___ m.

2.5 kHz = ____ Hz.

In which of the following mediums does the sound propagate at the highest speed?

The picture below indicates a _____.

Shock waves carry ____.

The distance covered by a compression of a sound wave per unit time is _____.

A child was observing a thunderstorm from the glass window of his room. He hears thunder after seeing the lightning, even if these two events occur at the same time. This is because the speed of light ____ the speed of sound.

A sound wave of wavelength 200 mm has a frequency of 2 kHz. Its speed is ____ m/s.

A sound wave traveling at a speed of 500 m/s has a frequency of 50 Hz. Its wavelength is ___ m.

1.65 kHz = ____ Hz.

In which of the following mediums does the sound propagate at the lowest speed?

At a particular temperature, the speed of sound in a medium was found to be 450 m/s. The speed of sound in that medium will be _____ if the temperature of the medium is decreased?

Which of the following sound waves shown would move faster in the air medium?

Sonic boom is a phenomenon caused by the sound emitting objects moving at _____.