Sound

Created by mlee4529 

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sound

is a disturbance that travels through a medium as a longitudinal wave

Sound Waves

reflect off objects, diffract through narrow openings and around barriers, and interfere each other

echo

sound waves may reflect when they hit a surface

speed of sound

depends on the elasticity, density, and temperature of the medium the sound travels through

elasticity

is the ability of a material to bounce back after being disturbed

density

is how much matter, or mass, there is in given amount of space, or volume.

Loudness

describes your perception of the energy of a sound

Loudness

depends on two factors: the amount of enery it takes to make the sound and the distance from the source of the sound

intensity

amount of energy a sound wave carries per second through a unit area

decibel (dB)

loudness of different sounds is compared using a unit

pitch

is a description of how high or low the sound seems to a person

pitch

depends on the frequency of the sound wave

ultrasound

sound waves with frequencies above the normal human range of hearing

infrasound

sounds with frequencies below the human range of hearing

larynx

where vocal cords are located

Doppler effect

change in frequency of a wave as its source moves relation to an observer

Music

is a set of notes that combines in patterns that are pleasing

sound quality of music

results from blending a fundamental tone with its overtones. Renonance also plays a role in the sound quality

fundamental tone

lowest natural frequency of an object

overtones

object's higher natural frequencies

Acoustics

is the study of how sound interact with each and the environment

Acoustics

is used the design of concert halls to control reverberation and interference

reverberation

which the echos of sound are heard after the sound source stops producing sound wave

ear canal

it collects sound waves and directs them into a narrow region

eardrum

is small, tighty stretched, dreamlike membrane

cochlea

is a fluid-filled cavity shaped like a snail shell

inner ear

converts the sound waves into form your brain can understand

middle ear

transmits the waves inward

outer ear

funnels sound waves

injury,infection,exposure to loud sounds, and aging

some causes of hearing loss

Echolocation

is the use of reflected waves to determine distances or to locate objects

echolocation

helps navigate and find food

bats + dolphins

animals that use echolocation

sonar

a system that uses reflected sound waves to detect distances and locate objects underwater

sonogram

an image formed by an ultrasound waves

sonar + ultrasound imaging

Are used to observe things that cannot be seen directly

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