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Basic Info
Sound Vocabulary
What's that noise?
Travelling Sounds
Parts of the Ear
100
Areas of high density in a sound wave
What are compressions
100
The change in frequency that occurs when a source of sound is moving relative to the listener.
What is Doppler Effect
100
Your teacher shows you a picture of a sound wave. How would you know if the wave has a high pitch or a low pitch?
based on the frequency - high frequency would mean high pitch
100
The speed of a sound depends on the ________ it is travelling through
What is medium/material
100
What is the part of the ear that has tiny hairs that trigger the auditory nerve to send a signal to the brain?
What is the cochlea
200
What is a rarefaction?
Areas of lower density
200
A reflected sound wave
What is an echo
200
At a concert, a TV screen showed the decibel level of the crowd. What was it measuring?
What is the loudness of the crowd
200
The speed of sound is greatest in __________ and lowest in ________.
What is solids and gases
200
Which section of the ear collects sounds?
What is outer ear
300
How do sound waves travel?
Parallel to the direction they are travelling
300
How might an animal use echolocation?
to hunt for prey
300
Why are there big fabric pads on the walls of the band room?
To absorb sound waves and improve the acoustics
300
Why can't sound waves travel through space?
There is no medium
300
What are the three tiny bones that vibrate after a sound wave vibrates the eardrum?
What are the hammer, anvil, and stirrup
400
How do all sound waves start?
With a vibration
400
Sound waves are categorized as two different types of waves. List and describe these two terms.
Mechanical - need a medium to travel through Longitudinal - wave travels parallel to the direction its travelling
400
How would you know if a sound is loud or soft?
Look at the amplitude (how compressed the molecules are)
400
Why do sound waves travel faster in hot air/liquids verses cold air/liquids?
The molecules are vibrating faster
400
Which section of the ear changes the sounds into nerve signals to be interpreted by the brain?
What is the inner ear
500
Waves carry ___________ through matter.
What is energy
500
A sound wave with a high pitch would have a high ________________.
What is frequency
500
What would you do to make the pitch of a guitar string higher?
Tighten the strings
500
Why is the following statement false? Waves carry molecules in one direction until those molecules collide with another molecule.
Waves do not carry molecules. The energy moves through the molecules.
500
Which section of the ear amplifies the sounds
What is the middle ear