CHEMISTRY LESSON 9

What is sound

vibration that travel through material from a source

what phase of matter does sound generally travel through best

solids

what measurement do we use to measure loudness

decibels

what is frequency

the pitch of a sound

which has more sound waves per second. a high pitched sound or a low pitched sound.

high pitched sound

what do we call a sound too high pitched for humans to hear

ultrasound

what do we call a sound too lowpitched for humans to hear

ultrasound

name 3 ways we use what we know about sound too help us

sonar, ultrasound, bioacoustics.

a vibration

sound

the moving vibration

sound waves

sound you hear a second time

echo

to lead something from one place to another

conduct

when something is going 760 mph

mach 1

anything faster than 760 mph

supersonic speed

anything faster than the speed of sound

sonic boom

way to measure frequency

hertz

sound too low for us to hear

infrasound

sound too high for us to hear

ultrasound

the quality of sound

timbre

 a system that uses high frequency ultrasonic waves

sonar

the study of sound made by wildlife

bioacoustics