Sound pollution

                                                                                                                                                                                                                                      EXERCISE                                                                                               1.                                                                

a) List the different types of noise pollution mentioned in the video.

 bit.ly/efectoscontaminacion

1. Trafic.
2. Industrial activity.
3. Location.                                                                               .
4. Stations
5. Ports
6. Airports.

b) What decibel level does the World Health Organization define as noise pollution? Is it the same for all cities and all public places?

Any  sound that supasses the 75 decibels.

No, is depended the place and the laws.

c) Describe four negative effects of noise pollution that have an impact on people’s health.

. Anxiety: it is a feeling of fear , trepidation and restlessness 

2. Depression: it's a disease.  

3. Stress: feeling of physical or emotionaly tension . 

4. Insomnia  is a frequent sleep disorder . 

2.

a) The property or parameter relating to time is duration.

b) A loud or soft sound tells us about its intensity.

c) That voice sounds familiar; I recognise its  timber .

d) His voice was so  low  that I could hardly hear it.

e) That siren was emitting a sound that was very  high .