Understanding Sound and Hearing

What is the main reason Squeaks is taking a camera on his trip?

• To document the sounds he encounters

• To take selfies with Tiny Jessi

• To capture photos of the places he visits

• To record videos of his adventures

What is the function of the auricle in the ear?

• To convert sound waves into electrical signals

• To collect and direct sound waves into the auditory canal

• To amplify sound waves

• To protect the inner ear from loud noises

Which part of the ear is responsible for amplifying sound waves?

• Cochlea

• Middle ear

• Eardrum

• Auricle

What is the cochlea's role in hearing?

• It converts sound waves into nerve signals

• It amplifies sound waves

• It protects the ear from loud noises

• It collects sound waves from the environment

Why can't humans hear all sound waves?

• Because some sound waves are too quiet or have the wrong pitch

• Because the eardrum cannot vibrate fast enough

• Because the cochlea is too small

• Because sound waves travel too fast

What is a cochlear implant used for?

• To protect the ear from loud noises

• To send vibrations directly to the nerves

• To convert sound waves into electrical signals

• To amplify sound waves

How do bats use echolocation?

• By using their eyes to see in the dark

• By bouncing high-pitched sounds off objects

• By using their large auricles to detect sound

• By emitting low-pitched sounds

What is unique about bird hearing compared to humans?

• Birds can hear underwater

• Birds have a similar ear structure but no external auricles

• Birds have no auditory canal

• Birds have larger auricles

What suggestion is given for recording sounds on Squeaks' trip?

• Use a camera that records audio

• Use a smartphone

• Use a tape recorder

• Use a microphone

What should you do if you want to make loud sounds in a room?

• Use headphones to make sounds

• Only make low-pitched sounds

• Ignore others and make noise

• Check if it's okay with others first