The Ear
As people get older, the tiny bones in their ears can ______________.
As people get older, the tiny bones in their ears can fuse/join together.
The frequency range an animal can hear is determined by the size of the animal's _______.
The frequency range an animal can hear is determined by the size of the animal's head.
A rock concert is typically around _________ decibels
A rock concert is typically around 120 decibels.
A guitar is played by _____________.
A guitar is played by plucking.
What types of shapes are used for sound-proofing and what do these shapes do?
Soft, irregular shapes are used for sound-proofing. They break up the sound waves.
How can trying to stop a sneeze affect your eardrum?
Trying to stop a sneeze can affect your eardrum because it can put too much pressure in the ear drum.
What features of an owl help it hear?
The features of an owl that help it hear are its round face, ring of still feathers, and the position of their ears.
Sounds above __________ decibels are harmful.
Sounds above 85 decibels are harmful.
A recorder is played by ____________.
A recorder is played by blowing.
__________ means 1/10 of a bel. This unit is used to measure the loudness or intensity of sounds
Decibel means 1/10 of a bel. This unit is used to measure the loudness or intensity of sounds.
The part of the inner ear that is involved in hearing is the ____________.
The part of the inner ear that is involved in hearing is the cochlea.
How do fish hear?
Fish and other sea animals feel the sounds as the waves travel through the water.
Normal conversation is around _______ decibels.
Normal conversation is around 60 decibels.
A tambourine is played by __________.
A tambourine is played by shaking.
How is volume different from pitch?
Volume is different from pitch because measure the frequency of a sound wave while volume measures how loud or soft a sound is.
What are the names of the small bones which conduct sound vibrations to the inner ear?
The small bones which conduct sound vibrations to the inner ear are the hammer, anvil and the stirrup.
No, snakes don't hear sounds, the feel.
The farther we are from a sound source, the ___________ the sound seems to be.
The farther we are from a sound source, the fainter/quieter the sound seems to be.
A drum is played by ___________.
A drum is played by banging.
The size of a sound wave is called its _____________.
The size of a sound wave is called its amplitude.
The __________ gathers sound and the sound is funneled through the ear canal to the eardrum, which ___________ when sound reaches it.
The pinna gathers sound and the sound is funneled through the ear canal to the eardrum, which vibrates when sound reaches it.
What parts of their body do elephants use to hear sounds?
Elephants use their trunks, feet and ears to hear sounds.
Why does the Doppler Effect happen?
The Doppler Effect happens because the air in front is moving object is compressed. That means the air particles are closer together, so the sound waves are closer together and create a high-pitched frequency. The air behind the moving object is not compressed.
A harp is played by ________________.
A harp is played by plucking the strings.
If I made a guitar for my musical instrument homework assignment, how can I change the pitch on the guitar?
I can change the pitch on the guitar by playing different strings/different combinations of strings or by tightening the strings.