1. Human Biology Project
Noise Pollution

2. What is noise pollution?
Annoying and potentially harmful environmental noise
Any unwanted man-made sound that penetrates the environment is noise pollution. In general noise pollution refers to any noise irritating to one's ear which comes from an external source.

3. Causes of Noise Pollution
Neighbourhood noise
e.g. mahjong, karaoke
Industrial and commercial noise
e.g. factory machines, construction project
Traffic noise
e.g. vehicles, aircraft
Sources of noise

4. Examples of causing the noise pollution
    
Examples of causing the noise pollution

5. Effects to personal health
loud or sustained noise can damage hearing (temporary or permanent deafness)
mental stress and high blood pressure
disturbance of work and schooling
activates the nervous system, causes the muscles to tense and the heart rate and respiratory rate to increase

6. Effects of noise on human

7. Effects to the environment
Noise may damage the nervous system of birds.
In 15 April,2005, 15 birds in Hubei suddenly fell to the ground.
After scientific investigation, it proved that noise damaged their nervous system and they lost the balance. The birds that directly fell on the ground

8. Existing measures for controlling the pollution
The government have set up laws to control the generation of noise
Build noise barriers along roads and railways
Setting time limits for pilling and drilling
Installation of double-glazed windows and air-conditioners in schools seriously affected by noise
Better land use zoning

9. Construction of noise barriers
The relocation of the airport from Kowloon City to Chek Lap Kok is an example of better landuse

10. Group member Chan Ho Pan (2) Chow Wai Chi (7) Kong Ting Lap (10)
Law Che Yeung (12)