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Structure of Human Ear

The time in w...

Question

The time in which sound travels to the two ears is always the same.

A

True

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B

False

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Solution

The correct option is B False
The time in which the sound reaches each ear is different. This information is used to determine where the sound is coming from.

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Q. Fill in the blanks with the correct words.
1. Sound is produced because of .................... (vibrations/refractions).
2. Sound travels through air by means of .................... (compressions/depressions) and .................... (rarefactions/refractions).
3. Sound needs a .................... (medium/vacuum) to travel.
4. The .................... (pinna/ear drum) collects sound waves and directs them to the ear tube.
5. The speed of sound is .................... (same/different) in different substances.

(a) State two methods of producing sound.

(b) How does sound from a sound producing body travel through air to reach our ears ?

Q. Put these terms, which describe the way sound travels from the air through your ear, in the correct sequence:
three tiny bones in the middle ear vibrate;your outer ear catches the sound and moves it inside your ear; a special nerve carries messages about sound to your brain; your eardrum begins to vibrate; liquid in the coiled tube of your inner ear vibrates

Q. State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.

Q. The time in which sound travels to the two ears is always the same.

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