洪玲玲( 12 ) 梁秋怡( 25 ) 李梦婷( 22 ) noise pollution
TRANSCRIPT
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洪玲玲( 12 )
梁秋怡( 25 ) 李梦婷( 2
2 )
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Noise Pollution
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With the development of machines, noise has also increased greatly in the 20th century. We live surrounded by loud planes, trucks and electric tools. Disco music reaches about 118 decibels. At decibels the ear stops hearing sound, and pain starts.
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• Outdoors1.air plane2.the car3.Industry
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Indoors1.Disco2.TV sets and radio3.Loud speaking
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Animals effects
Noise can have a detrimental effect on animals by causing stress, increasing risk of mortality, and by interfering with their use of sounds in communication especially in relation to reproduction.
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Human health effects
Noise health effects are both health and behavioral in nature. Noise pollution can cause annoyance and aggression, hypertension, high stress levels, hearing loss
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• Chang the spread of noise » Sound insulation set beside the roadway
Pretect residents living the roadway
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• Building for sound insulation
Pretect residents
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• Ways to avoid noies Pretect people
affected by noise Entotic plug
Equipment for absorbing noise
Special m ateriels for absorbing noise
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It’s everyone’s responsibility to It’s everyone’s responsibility to protect enviromentprotect enviroment