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20 Cards in this Set
- Front
- Back
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Sound waves move outward from their source in all ____________________.
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directions
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Sound waves travel at different __________ through all kinds of matter.
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speeds
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You can make a sound ____________ by using a stronger force to make the vibrations.
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louder
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Name the 3 main parts of the ear.
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outer ear, middle ear, and inner ear
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Vibrations move from the ear bones in the middle ear to the ______________.
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cochlea
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The ___________________ of a sound is always a vibrating object.
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source
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Vibrations you can hear are called ______________.
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sound
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Large, hard smooth surfaces _____________ sound waves.
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reflect
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Rough, soft, or uneven surfaces ___________ sound waves.
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absorb
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A sound that reflects clearly enough to be heard again is called an _________.
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echo
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Sound travels the fastest through what state of matter (solid, liquid, or gas)?
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solid
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What characteristic of sound helps us hear the differences in sounds?
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quality
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What characteristic of sound describes how loud or soft a sound is?
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volume
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What characteristic of sound describes how high or low a sound is?
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pitch
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What are 4 ways you can make an object vibrate?
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rubbing, plucking, hitting, or blowing
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The outer ear collects vibrations and sends them through the ear canal to the ___________ .
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eardrum
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Vibrations move from the eardrum to the ______ ________ in the middle ear.
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three bones
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Vibrations pass from the ear bones in the middle ear to the _____________ in the inner ear.
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cochlea
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Vibrations move from the cochlea to the _______________ ___________.
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auditory nerve
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The __________ understands the messages as sound, and sound is heard.
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brain
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