Unit 1 - The sound

What is the role of the outer ear in the hearing process?

• It vibrates to create sound.
• It receives sound and channels it towards the eardrum.
• It amplifies sound waves.
• It converts sound waves into electrical impulses.

At what speed does sound travel through the air?

• 343 meters per second
• 1,500 meters per second
• 5,100 meters per second
• 500,000 waves per second

What is the function of the ossicles in the ear?

• They capture sound waves from the air.
• They generate electrical signals.
• They transmit vibrations to the cochlea.
• They perceive different tones of sound.

Which animal uses echolocation to navigate and hunt?

• Cockroaches
• Worms
• Grasshoppers
• Bats

What type of sound waves are bats sensitive to?

• Infrasound
• Ultrasound
• Musical sound
• Noise

How do cockroaches detect sound?

• Through tympanic membranes
• Using the hairs on their bodies
• With an internal cochlea
• By changes in air pressure

What does the term "auditory memory" refer to?

• The memory of sounds heard in a musical context.
• The ability to recognize sounds you have heard before.
• The process of converting vibrations into electrical signals.
• The speed at which sound travels through different mediums.

In which medium does sound travel fastest according to the text?

• Air
• Water
• Steel
• The human body

How is "sound without a defined tone" that cannot be rhythmically represented on a musical score described?

• Musical sound
• Noise
• Ultrasound
• Infrasound

What is necessary to produce a musical sound?

• Irregular vibratory waves
• A medium such as air or water
• Regular vibratory waves with a regular frequency
• A high-frequency sound inaudible to humans