Key Idea #3: Sound is created when something vibrates. Energy is the ability to do work or cause motion. Matter is anything that has mass and takes up space. Sound energy is a disturbance made by vibrating molecules of matter that travel through a medium in the form of a longitudinal wave. http://www.passmyexams.co.uk/GCSE/ physics/Basic%20Waves%20Theory.html
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Key Idea #3: Sound is created when something vibrates. Energy is the ability to do work or cause motion. Matter is anything that has mass and takes up.
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Key Idea #3: Sound is created when something vibrates.
Energy is the ability to do work or cause motion.
Matter is anything that has mass and takes up space.
Sound energy is a disturbance made by vibrating molecules of matter that travel through a medium in the form of a longitudinal wave.
Animals living underground can hear sounds through the earth.
Sound travels through the strings of musical instruments.
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Speed of Sound Chart In which substance
does sound travel the slowest?
Speed of Sound Chart In which substance
does sound travel the slowest?
Sound travels the slowest in gases/carbon dioxide.
Speed of Sound Chart In which substance
does sound travel the fastest?
Speed of Sound Chart In which substance
does sound travel the fastest?
Sound travels the fastest in solids/steel.
Speed of Sound Chart What is the purpose
of this graph?
What is this man doing and why?
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What is this man doing and why?
soulcandyman.blogspot.com
• The man is listening for a train.
• He will hear the approaching train through the tracks before he will hear it through the air because sound travels faster through a solid than through a gas.
The “Old West”• People in the “Old
West” put their ears to the ground to listen for hoof beats of buffalo or horses.
• Why did they do this?
Sound can’t travel through a vacuum because there are no molecules in a vacuum to vibrate.
Sound can’t travel through outer space because the few molecules in outer space are too spread out.
Why does the speed of sound travel faster in warmer temperatures than cooler temperatures?
The speed of sound travels faster in warmer temperatures because the molecules are moving faster than the molecules in cooler temperatures.