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Sonar Distance Calculation Quiz

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Questions and Answers

What is the function of the 'pinna' in the human ear?

Amplify sound vibrations

Convert sound waves into electrical signals

Protect the eardrum

Collect sound from the surroundings (correct)

Which part of the ear is responsible for amplifying vibrations?

Hammer, anvil, and stirrup (correct)

Eustachian tube

Auditory nerve

Cochlea

What happens when a compression of the medium reaches the eardrum?

The eardrum protects the inner ear

The eardrum converts sound waves into electrical signals

The eardrum vibrates (correct)

The eardrum moves outward

Which part of the ear turns pressure variations into electrical signals?

Cochlea Signup and view all the answers

What transmits the amplified pressure variations from the middle ear to the inner ear?

Auditory nerve Signup and view all the answers

What is the function of the three bones (hammer, anvil, stirrup) in the middle ear?

Amplify sound vibrations Signup and view all the answers

What is the speed of sound in sea water as mentioned in the text?

1531 m/s Signup and view all the answers

How deep is the sea if the distance of the seabed from the ship is 2.62 km?

2618 m Signup and view all the answers

What is the time taken for the sonar pulse to return from the underwater cliff?

1.02 s Signup and view all the answers

How do bats search out prey and fly in dark night?

By using echolocation Signup and view all the answers

What allows us to convert pressure variations in air with audible frequencies into electric signals for hearing?

Outer ear structure Signup and view all the answers

Besides bats, what other marine animals use ultrasound for navigation and food location?

Porpoises Signup and view all the answers