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Related Flashcards
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Cards In This Set
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Frequency
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Measures the number of sound waves that pass in one second.
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Pitch
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A measure of how high or low a sound is (a kitten's meow has a high pitch, a lion's roar has a low pitch)
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Intensity
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The measure of how loud or soft a sound is
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Amplitude
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The amount of energy in a sound wave
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Reflection of sound
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The bouncing of sound off an object (this is when an echo is created)
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Echo
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When sound is reflected off an object and bounces back so we hear it again.
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Focusing of Sound
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Using objects to bring sound waves together so they are louder. (Like cupping your hands, or yelling into a cone shaped object).
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Vibration
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A quick back and forth motion. When objects do this it creates a sound.
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Outer ear
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Part of the ear that catches the sound waves and focuses them to the ear drum.
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Absorption of Sound
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When an object takes in the sound energy (like insulation between walls or carpet and fabric in a room).
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Vocal Chords
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Chords inside the throat of animals and people. When they vibrate they make the sound of our voices.
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What are the names of the bones that vibrate inside the ear when sound waves enter?
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Hammer, anvil, and stirrup.
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What sends sound wave messages to the brain?
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Auditory Nerve
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Eardrum
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The sound waves cause the bones inside the ear to vibrate against the eardrum.
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