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Physical Science

Chpt 13 vocab for final

TermDefinition
Pitch part of sound determined by the frequency
Quality determines the difference between a trumpet and a flute playing the same note
Loudness the response of your ear to the sound
Intensity measures the power of the sound at its source
Resonance when two objects have the same natural frequency
Human Hearing Range 20Hz-20,000Hz
Sound-Reflecting Surfaces that bounce off echoes
Sound-Deadening Surfaces that soak up echoes
Superposition the combination of two or more waves
Decibel unit of loudness; measures loudness
Acoustics the study of sound
SONAR SOund Navigation And Ranging; using sounds to locate an object
Active SONAR uses transducers to emit sound
Passive SONAR uses hydrophones to listen for emitted sounds
Hydrophone a waterproof microphone used to passively detect sounds under water
Ultrasonic Waves sound waves above the range of human hearing
Infrasonic Waves sound waves that cannot be heard but can often be felt
Seismology the study of earthquakes
Outer Ear this part of the ear funnels sound into the ear
Middle Ear this part of the ear contains the hammer, anvil, and stirrup
Inner Ear this part of the ear contains the cochlea
Anvil (incus) passes vibrations from the hammer to the stirrup
Cochlea translates sound into nerve impulses to be sent to the brain
Semicircular Canal the organs of balance
Eustachian Tube allows you to equalize pressure on both sides of the eardrum when you yawn or swallow
Created by: Giraffe Girl