洪玲玲（ 12 ）

梁秋怡（ 25 ） 李梦婷（ 2

2 ）

Noise Pollution

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.

• Outdoors1.air plane2.the car3.Industry

Indoors1.Disco2.TV sets and radio3.Loud speaking

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.

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

• Chang the spread of noise » Sound insulation set beside the roadway

Pretect residents living the roadway

• Building for sound insulation

Pretect residents

• Ways to avoid noies Pretect people

affected by noise Entotic plug

Equipment for absorbing noise

Special m ateriels for absorbing noise

It’s everyone’s responsibility to It’s everyone’s responsibility to protect enviromentprotect enviroment