NS: Energy & Sound

NS: Energy & Sound - Term Definition Musical...

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Term: Musical instruments make sound through ........ Definition: Vibrations. Term: Vibrations (movement) cause ...... Definition: Sound Term: Name two senses we use to know that vibrations (sound) exists Definition: Hear and feel. We can both hear and feel vibrations that cause sound. Term: What is the scientific study of sound called? Definition: Acoustics
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Term: How do we make a sound when we talk? Definition: When you start to talk air moves through your throat. This air passes over your vocal chords in your throat. This makes the vocal chords vibrate. As they vibrate, they cause sound. Term: How do we hear sound? Definition: Sound waves travel past your outer ear and ear lobe into your inner ear. There is an eardrum in your inner ear. The sound waves make your eardrum vibrate. Your brain interprets these vibrations into sound. Term: Can sound vibrations travel in a vacuum? Definition: No, they need a material, called a medium, to travel through. Term: How does sound travel through air? Definition: A movement causes an air particle to vibrate. This air particle then bumps into another air particle and moves back to its original position. The second air particle then does the same to a third. In summary, a sound is able to move from where it is made to where it is heard by air particles vibrating and passing on the vibration to from one to another.
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Term: What is the vibration of air particles called?
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