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Sound Energy

QuestionAnswer
What causes sound? Matter, or an object, vibrating.
Pitch How high or low a sound is
High Pitch A sound wave with a higher frequency.
Low Pitch A sound wave with a lower frequency.
Absorption of sound When sound waves hit a soft, less dense, object the energy is absorbed.
Reflection of sound This is an echo. When sound bounces off a flat, dense, surface it echoes.
Towels, soft materials, people, blankets, pillows Items of less density. These absorb sound energy.
Floors, walls, concrete, wood, hard plastic Items of more density. These objects reflect sound energy.
Frequency The number of sound waves per second
Density The amount of stuff in a thing
A solid Sound will travel best, or fastest, through this state of matter
A gas Sound will travel the worst, or slowest, through this state of matter
A liquid Sound travels at a medium speed through this state of matter.
What is needed for sound to travel from one place to another? Matter
Sound cannot travel through this An empty Vacuum
Created by: user-1876430
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