True or False Statements Quiz

The tube called the ear canal channels the sound to the auditory nerve

• True

• False

The shell-shaped chamber called cochlea begins to vibrate according to the different frequencies.

• True

• False

Frequency are used to check the pitch of piano keys.

• True

• False

The loudness of sound depends on the number of vibrations.

• True

• False

Ultrasound machine uses frequency sound waves to create an image of the foetus.

• True

• False

Bimetallic strip are used to join steel plates and girders.

• True

• False

The rate of expansion is fastest in solids

• True

• False

A bimetallic strip is made of two different metal strips welded together.

• True

• False

In thermos flask, the walls are painted in silver colour on the vacuum side so that heat loss by radiation is reduced.

• True

• False

There are three mechanisms for heat transfer: conduction, convection and radiation.

• True

• False