The _______________ of a sound determines its pitch.
what is frequency?
100
What are sounds made by?
Vibrations
100
Sound cannot travel through empty space. true or false.
true
100
The outer ear channels what into the ear?
Sound waves
100
What is the device used to measure sound called?
Sound meter
200
The height of the wave is called?
Amplitude
200
A long thick string produces a ____________pitched sound.
Low
200
Sound travels through what?
what is matter?
200
What is the thin membrane inside your ear called?
ear drum
200
What are the units of sound levels
Decibels
300
The amplitude tells us about what feature of a sound?
Volume or loudness
300
A small object produces what kind pitch of sound? high or low?
High
300
Sound waves move fastest through solids, liquids or gases?
what is solids?
300
What type of signals does the ear auditory nerve send to the brain?
Electrical
300
Both light and sound travel in _______________.
what is waves?
400
Lots of closely packed waves would represent a:
- high frequency
- low frequency
high frequency
400
To increase the pitch of an string instruments you can....
tighten the strings
400
In the classroom we did an experiment about how sound travels through different mediums. We found that sound traveled better through ____________________.
What is wood (solid)?
400
The cochlea is filled with what?
Fluid
400
The volume of a sound is affected by the energy of the sound wave or ___________________.
What is the amplitude?
500
Reducing the pitch of a sound does what to the shape of the wave?
Decreases frequency so waves become more spread out
500
A high pitched sound is created by:
- lots of fast vibrations
- few slow vibrations
Lots of fast vibrations
500
The ______________ of sound is determined by the material that it travels through.
what is the speed?
500
The three bones inside the inner ear called are called the hammer, the nail, and the anvil. True or false.
what is false? They are called the Hammer, Stirrup, and Anvil.
500
The pitch is how loud or soft a sound is. True or false.
What is false? Volume is how loud or soft a sound is.