unit 11 sound , grade 6

Sound waves are ---------------------------- waves.

• ELECTROMAGNETIC

• MECHANICAL

• ULTRAVIOLET

• MAGNETIC

In air , the speed of sound is :

• 330 m/s

• 3000 m/s

• 30 m/s

• 330 km/s

Speed of light is:

• 300,000 km/s

• 300,000 m/s

• 3000km/s

• 350000 m/s

The exact speed of sound depends on the:

• HUMIDITY

• PRESSURE

• TEMPERATURE

• NONE OF THESE

Speed of sound is almost ---------- times more through water than in air

• TEN

• FIVE

• FIFTEEN

• TWENTY

Sound can not travel through:

• AIR

• VACUUM

• LIQUID

• SOLID

Which part of the ear acts like a funnel?

• OUTER EAR

• MIDDLE EAR

• INNER EAR

• SEMICIRCULAR CANALS

What is the name of the nerve connecting ear to the brain?

• OPTIC NERVE

• AUDITORY NERVE

• OLFACTORY NERVE

• COCHLEA

A whistle makes a --------------- pitched sound.

• LOW

• HIGH

The loudness of the sound is called:

• FREQUENCY

• AMPLITUDE

• WAVELENGTH