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Physical Science Test 8

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Across
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Instruments in which pitch varies when holes are opened or closed
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Perception of sound intensity by human ear
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Sound waves are what type of wave
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French horn, trumpet, & tuba belong to this family
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Driving frequency = natural frequency
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Change in course of wave when it collides with an object
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The set of frequencies at which an object vibrates
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Multiple reflections
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Noise is ____ sound with no intended pattern
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Sounds produced that are higher that fundamental
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The difference in pitch between a note and a second note that has 2x the frequency
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Harmonious interference
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Sound of definite pitch
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Most versatile instrument in modern times
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Process of dissipating sound wave energy in matter
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Sound heard after it has been reflected off an object
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Change in the sound frequency by an object's motion
Down
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Timbre is a reference to the _____ of sound
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percussion instruments played by being ____
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System used to detect items underwater
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interference that is beneficial
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A series of organized sound waves with specific pitches that are deliberately arranged
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Length of a wave
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Intensity is a reference to the ____ of a sound wave
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Frequency relationships between fundamental and overtones are described by what
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Law that states angle of incidence = angle of reflection
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# of waves that pass a given point per unit of time
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Spreading out of a wave
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The most dominant sound produced by a musical instrument
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Sound with frequency below the range of human hearing
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Change in a wave's direction when passing from one substance to another
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Time needed for one wave to pass
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A hollow body that makes noises louder
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Violent compression that results when an object travels quicker than the speed of sound
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Audible sounds can be _____
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Hertz is the SI unit of what
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Unit used to measure sound
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The way our ear perceives sound frequency