Definitions
A form of energy that you can hear
sound
Sound is caused by a moving object that is ___________.
vibrating
Sound travels in ________.
waves
Sound waves spread out as they move farther away from the _______ of their vibrations.
source
The ear collects sound waves and sends _____ to the brain.
messages
a rapid back-and-forth movement
vibration
What is the device used by musicians that shows vibrations.
tuning fork
_______ _______ move outward from their source in all directions.
sound waves
_____ depends on how fast the source of the sound is vibrating.
pitch
_____ helps us identify different people's voices
quality
a sound wave that reflects clearly enough to be heard again
echo
Sound waves move outward from their source in ______ ________.
all directions
Large, hard, smooth surfaces _____ sound waves.
reflect
______ depends on how much force is used to make an object vibrate.
volume
As sound waves move farther away, the vibrations become _______ and the sound becomes ________.
weaker
quieter
to bounce a sound wave off an object
reflect
Why might ceiling tiles and carpet be used in a library?
to absorb sounds and make the room quieter
Rough, soft, or uneven surfaces ____ sound waves.
absorb
When playing with handbells which handbells would have the higher pitch?
smaller
Why do clarinets and flutes sound different even when they play the same note?
Their quality of sound is different
to take in the sound wave
absorb
What are four ways you can make an object vibrate?
blowing on it
hitting it
plucking it
rubbing it
List in order what sound travels fastest through with solid, air, and water.
1) solid
2) water
3) air
What are the three characteristics of sound?
pitch
volume
quality
List in order the three main parts of the ear that sound travels through.
1) outer ear
2) middle ear
3) inner ear