| A | B |
|---|
| _______ is a disturbance that travels through a meddium as a longitudinal wave | sound |
| ______________ is the use of reflected sound wavws to determine distance or to locate objects | Echolocation |
| What are three main sections of the ear | Outer, inter, middle |
| Give examples of wind instruments | trumpets, clarinet, flute,saxaphone |
| ______ is a set of notes that combine in patterns that are pleasing | music |
| The ______ is a fluid-filled cavity, shaped like a snail shell and is responsible for sending messages to the brain | cochlea |
| Some animals, including bats and dolphins, use echolocation to ______ and to ____ ____ | Navigate find food |
| When a sound source moves, the __________ of the wave changes because the _______ of the source adds to the motion of of the wave | frequency motion |
| Ultrasound technologies such as and ultrasound imaging are used to ________ things that cannot be _____ directly | observe seen |
| ___________ ___________ may distort sounds | Constructive interference |
| The _______ ear funnels sounds wave | outer |
| Give examples of stringed instruments | guitars pianos violins |
| Your vocal cords are located in your voice box, or __________ | larynx |
| _________ describes your perception of the energy of a sound | loudness |
| The ______ ______ of musical instruments results from the blending of a fundamental tone with ait's overtones | sound quality |
| A system that uses reflected sound waves to detect and locate objects underwater is called ______ | sonar |
| T or F The more elastic a medium, the slower sound travels in it. | False=sound travels more quickly in medium that have a high degree of elasticity |
| The ______ the energy used to make a sound, the ________ the sound. | greater louder |
| The ability of a material to bounce back after being distred is called ________. | elasticity |
| When a shock wave pass by, people hear a loud noise called a _____ ______. | sonic boom |
| A reflected sound wave is called a _______. | echo |
| What are four causes of hearing loss. | injury to the ear, infection, aging, exposure to loud music |
| ___________ plays a roll in the quality of music. | Resonance |
| The ____ ____ is a small, tightly streched, drum-like membrance that vibrates when sound waves hit it. | ear drum |
| What three bones are found in the middle ear. | The hammer,the anvil, the stirrup |
| The loudness of different sounds is compared using a unit called the _____ | decibel (db) |
| Sound travels _____ ________ in mediums that have a high degree of elasticity. | more quickly |
| What is sonar used for. | To dectect icebergs, determine the depth of water, locate sunken ships,schools of fish, and boats on the ocean floor |
| Give examples of percussion instruments. | drums, cymbals, xylophones, cybals, bells |
| Music usually uses specific pitches called______. | notes |
| The _______ ear transmits sound waves inward. | middle |
| In stringed instruments, sound is produced by strings that vibrate when they are _______,_________,or ________ with a bow. | pluced, struck, or rubbed |
| _______ __________ may produc "dead spots" where loudness is reduced. | Destructive interference |
| Sound begins with a _________. | vibration |
| The _____ of a sound is a description of how high or low the sound seems to a person. | pitch |
| ______ is how much matter, or mass, there is in a given amount of space, or volume. | density |
| The __________ ______ is the lowest natural frequency of an instrument or other object. | fundamental tone |
| ________ is the study of how sounds interact with each other and the environment. | acoustics |
| The change in frequency of a wave as it's source moves in relation to the observer is called the ______ _______. | doppler effect |
| T or F Sound waves do NOT always in a straight line. | True sound waves are not always in a straight line |
| Repeat echoes of a sound that are produced by reflection of sound waves is called ________. | reverberation |
| A narrow region in the ear that is a few centimeters long and ends at the eardrum is called the ____ ______. | ear canal |
| What are the three basic groups of instruments? | stringed, wind, percussion |
| A common medium for sound is _____. | air |
| Sound travels ____ ______ at tempertures than at higher tempertures. | more slowly |
| T or F Sound waves can travel without a medium | False sound wave need a medium in order to travel. |
| The interaction of sound waves is called a _______. | interference |
| The interaction of sound wave, the _____ the sound | louder |
| The pitch of a sound that you hear depends on the ______ of the sound wave. | frequency |
| Loudness describes what you ______. | hear |
| _________ ______ devices send ultrasound waves into the body and detect reflected sound waves. | ultrasound imaging |
| ________ is used in the design of concert halls to control reverberation and interference. | acoustics |
| Sound waves with frequencies below the normal human range of hearing are called ________. | infrasound |
| T or F Sound cannot travel through solids and liquids. | False sound CAN travel through solids and lquids |
| Sound waves _____ off objects, _____ through narrow openings and around barriers, and _______ with each other. | reflect diffract interfere |
| Sound travels ______ ______ in denser mediums. | more slowly |
| The _____ ear converts the sound waves into a form your brain can understand. | inner |
| What are the two types of interference in sound waves. | constructive and destructive |
| The speed of sound depends on the _____, ____, and ________ of the medium. | elastricity, density and temperature |
| An instrument's higher natural frequency is called _______. | overtone |
| The _______ a sound wave is from it's souuce, the ____ energy it hs over a given area. | less |
| A _______ is a picture produced by ultrasound imaging devices. | sonogram |
| T or F In materials in the same state of matter, sound travels more slowly in denser mediums. | true sound travels slow in denser mediums |
| Sound waves with frequencies above the normal human range of hearing are called _______. | ultrasound |
| The loudness of a sound depends on what two factors. | the amount of energy it takes to make the sound and the distance from the source of the sound |
| The amount of energ a sound wave carries per second through a unit area is it's ______. | intensity |
| Resonance affects sound quality by __________ the loudness of certain overtones. | increasing |
