Match the following. Column A Column B 1. Pinna a. vibrates 2. Ear canal b. send electric signals to brain 3. Eardrum c. receives sound 4. Auditory nerve d. long coiled tube 5. Cochlea e. send vibrations to ear drum

1. Pinna - e. send vibrations to eardrum Pinna is located in the outer ear. The pinna gathers the sound waves and leads them to the ear canal where they strike the eardrum, which is located at the end of the eardrum. 2. Ear canal - c. receives sound The ear canal is located in the outer ear. It receives the sound waves from the pinna and gets it strikes at the eardrum. 3. Eardrum - a. vibrates The sound waves gathered by the pinna lead them to the ear canal where they strike at the eardrum. These sound waves vibrate the membrane of the eardrum. 4. Auditory nerve - b. send electric signals to brain The auditory nerve sends the electric signal to the brain. This helps the brain to register and understand sound. 5. Cochlea - d. long coiled tube The cochlea is located in the inner part of the ear which is a long coiled tube. It is filled with fluid and has numerous highly sensitive hair cells. Column A Column B 1. Pinna e. send vibrations to eardrum 2. Ear canal c. receives sound 3. Eardrum a. vibrates 4. Auditory nerve b. send electric signals to brain 5. Cochlea d. long coiled tube

E M B I B E

Expanded Universal Science>Chapter 13 - Sound>TRACK YOUR PROGRESS>Q 1

EASY

8th CBSE

IMPORTANT

Earn 100

is the unit for measuring the loudness of sound. $(Decibel / Hertz)$

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Important Questions on Sound

EASY

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 13 - Sound>TRACK YOUR PROGRESS>Q 2

Match the following.

Column A	Column B
1. Pinna	a. vibrates
2. Ear canal	b. send electric signals to brain
3. Eardrum	c. receives sound
4. Auditory nerve	d. long coiled tube
5. Cochlea	e. send vibrations to ear drum