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SSOOUUNNDD 
DDOONNEE BBYY:: JJ..JJEEFFRRIINNAA
WWhhaatt iiss ssoouunndd?? 
VViibbrraattiioonnss tthhaatt ttrraavveell tthhrroouugghh tthhee aaiirr 
oorr aannootthheerr mmeeddiiuumm aanndd ccaann bbee hheeaarrdd 
wwhheenn tthheeyy rreeaacchh aa ppeerrssoonn''ss oorr 
aanniimmaall''ss eeaarr.. 
SSoouunndd ppllaayyss aann iimmppoorrttaanntt rroollee iinn oouurr 
lliiffee.. IItt hheellppss uuss ttoo ccoommmmuunniiccaattee wwiitthh 
oonnee aannootthheerr..
HHooww iiss ssoouunndd pprroodduucceedd?? 
 PPrroodduucceedd bbyy VViibbrraattiinngg BBooddyy 
TThhee ffoorrtthh aanndd bbaacckk mmoottiioonn ooff aann oobbjjeecctt iiss tteerrmmeedd 
aass vviibbrraattiioonnss ..WWhheenn aa ttiigghhttllyy ssttrreettcchheedd bbaanndd iiss 
pplluucckkeedd,, iitt vviibbrraatteess aanndd pprroodduucceess ssoouunndd.. WWhheenn iitt 
ssttooppss vviibbrraattiinngg,, iitt ddooeess nnoott pprroodduuccee aannyy ssoouunndd.. 
 PPrroodduucceedd bbyy hhuummaannss,, aanniimmaallss ,,aaiirr eettcc.. 
TThhee aaiirr ccaauusseedd bbyy uuss pprroodduucceess ssoouunndd wwhheenn iitt 
ppaasssseess tthhee vvooccaall ccoorrdd.. 
AAnniimmaallss aanndd vveehhiicclleess pprroodduucceess ssoouunndd ttoooo..
How does sound travel? 
 A demonstration of how sound 
travels through the air or any other 
medium. Sound is transmitted from a 
source to the surrounding air particles, 
which vibrate or collide and pass the 
sound energy along to our ears. 
Without any particles to vibrate, we 
wouldn't hear the sound.
HHooww ddoo wwee hheeaarr ssoouunndd?? 
TThhee sshhaappee ooff tthhee oouutteerr ppaarrtt ooff tthhee eeaarr iiss 
lliikkee aa ffuunnnneell.. WWhheenn ssoouunndd eenntteerrss iinn iitt ,,iitt 
ttrraavveellss ddoowwnn aa ccaannaall aatt tthhee eenndd ooff wwhhiicchh aa 
tthhiinn mmeemmbbrraannee iiss ssttrreettcchheedd ttiigghhttllyy.. IItt iiss 
ccaalllleedd tthhee eeaarrddrruumm.. 
SSoouunndd ccaann aallssoo ccaauussee ppoolllluuttiioonn.. 
..
Sound
Sound

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Sound

  • 1. SSOOUUNNDD DDOONNEE BBYY:: JJ..JJEEFFRRIINNAA
  • 2. WWhhaatt iiss ssoouunndd?? VViibbrraattiioonnss tthhaatt ttrraavveell tthhrroouugghh tthhee aaiirr oorr aannootthheerr mmeeddiiuumm aanndd ccaann bbee hheeaarrdd wwhheenn tthheeyy rreeaacchh aa ppeerrssoonn''ss oorr aanniimmaall''ss eeaarr.. SSoouunndd ppllaayyss aann iimmppoorrttaanntt rroollee iinn oouurr lliiffee.. IItt hheellppss uuss ttoo ccoommmmuunniiccaattee wwiitthh oonnee aannootthheerr..
  • 3. HHooww iiss ssoouunndd pprroodduucceedd??  PPrroodduucceedd bbyy VViibbrraattiinngg BBooddyy TThhee ffoorrtthh aanndd bbaacckk mmoottiioonn ooff aann oobbjjeecctt iiss tteerrmmeedd aass vviibbrraattiioonnss ..WWhheenn aa ttiigghhttllyy ssttrreettcchheedd bbaanndd iiss pplluucckkeedd,, iitt vviibbrraatteess aanndd pprroodduucceess ssoouunndd.. WWhheenn iitt ssttooppss vviibbrraattiinngg,, iitt ddooeess nnoott pprroodduuccee aannyy ssoouunndd..  PPrroodduucceedd bbyy hhuummaannss,, aanniimmaallss ,,aaiirr eettcc.. TThhee aaiirr ccaauusseedd bbyy uuss pprroodduucceess ssoouunndd wwhheenn iitt ppaasssseess tthhee vvooccaall ccoorrdd.. AAnniimmaallss aanndd vveehhiicclleess pprroodduucceess ssoouunndd ttoooo..
  • 4. How does sound travel?  A demonstration of how sound travels through the air or any other medium. Sound is transmitted from a source to the surrounding air particles, which vibrate or collide and pass the sound energy along to our ears. Without any particles to vibrate, we wouldn't hear the sound.
  • 5. HHooww ddoo wwee hheeaarr ssoouunndd?? TThhee sshhaappee ooff tthhee oouutteerr ppaarrtt ooff tthhee eeaarr iiss lliikkee aa ffuunnnneell.. WWhheenn ssoouunndd eenntteerrss iinn iitt ,,iitt ttrraavveellss ddoowwnn aa ccaannaall aatt tthhee eenndd ooff wwhhiicchh aa tthhiinn mmeemmbbrraannee iiss ssttrreettcchheedd ttiigghhttllyy.. IItt iiss ccaalllleedd tthhee eeaarrddrruumm.. SSoouunndd ccaann aallssoo ccaauussee ppoolllluuttiioonn.. ..