Sound Review

Select the part of the ear also known as the outer ear.

• Ear Drum

• Ossicles

• Cochlea

• Pinna

Select the part of the ear made of little bones.

• Ear Drum

• Ossicles

• Cochlea

• Pinna

Select the part of the ear full of liquid and little hairs.

• Ear Drum

• Ossicles

• Cochlea

• Pinna

Select the part of the ear which vibrates first when hit with sound waves.

• Ear Drum

• Ossicles

• Cochlea

• Pinna

Tags

NGSS.MS-PS4-2

Select the part of the ear which takes electrical messages to the brain.

• Ear canal

• Ossicles

• Cochlea

• Auditory nerve

Select the correct path sound waves take from the pinna to the brain.

• Ossicles->

  Ear drum->

  Cochlea ->

  Auditory nerve

• Ear drum->

  Cochlea->

  Ossicles ->

  Auditory nerve

• Ear drum->

  Ossicles->

  Auditory nerve ->

  Cochlea

• Ear drum->

  Ossicles->

  Cochlea ->

  Auditory nerve

Tags

NGSS.MS-PS3-5

Select the unit used to measure loudness.

• Hertz (Hz)

• Decibels (dB)

• Newtons (N)

• Kilograms (kg)

Tags

NGSS.MS-PS4-1

Select the true sentence.

• An increase of 10dB doubles the loudness of a sound.

• An increase of 20dB doubles the loudness of a sound.

• An increase of 30dB doubles the loudness of a sound.

• An increase of 40dB doubles the loudness of a sound.

Tags

NGSS.MS-PS4-1

Select the loudness of a sound which can permanently damage hearing.

• 17.dB

• 35dB

• 70 dB

• 140dB

Write down the word which means 'reflection of a sound wave.'

(a)  

Tags

NGSS.MS-PS4-2