Definitions
vibration
rapid back-and-forth movement
What is sound?
a form of energy you can hear
the 3 characteristics of sound
pitch, volume, quality
sound wave that reflects clearly enough to be heard again
echo
3 ways sounds you make glorify God
protecting people from harmful sounds
playing beautiful music
speaking kind words
worshiping God with singing
volume
how loud or soft a sound is
What causes sound?
a moving object that is vibrating
depends on how fast the source of sound is vibrating
pitch
surfaces that REFLECT sound waves
large, hard, smooth
4 ways you can make an object vibrate
blowing on it
hitting it
plucking it
rubbing it
pitch
how high or low a sound is
how sound waves move
outward from their source in all directions
depends on how much force is used to make an object vibrate
volume
surfaces that absorb sound
rough, soft, uneven
Which size handbell will have a higher pitch?
smaller handbells
quality
what makes a sound different from all other sounds
Fastest: solid
Medium: liquid
Slowest: gas
helps us identify different voices
quality
why 2 similar instruments sound different when playing the same note
their quality of sound is different
If an object has less air, what is the speed of vibration?
fast