The outer ear is also called _________

The intensity of reverberation is higher in a closed and empty house.

to be able to hear a distinct echo, the reflecting surface should be at a minimum distance of ______

How is ultrasound used in medical science?

The normal hearing range for humans is ……………………………… .

The velocity of sound is directly proportional to the ……………………………… .

Sound waves with frequency greater than 20 kHz are called ……………………………… .

The ……………………………… receives the vibrations coming from the membrane and converts them into electrical signals which are sent to the brain through the nerve.

Find the odd one out

If the sound reaches the room in 5 seconds and it travels at a speed of 110m/s.What is the distance travelled by it?

What is velocity of sound wave ?

In a transverse wave ________________

Sound waves are ______

Bats can navigate in dark.

SONAR technology is used in ______

Repetitions of sound due to reflection is called ______

Time period is also the reciprocal of _______

If the angle of reflection of sound is 45 degrees, the angle of incidence is ___

The loudness of a sound depends upon ……………………………… .