Which of the following definitions of noise pollution is the most accurate<
a. A combination of different sounds
b. A disturbing sound
c. Any unwanted, disturbing, or harmful sound that impairs or interferes with hearing
d. Sounds originated by transport and industry
       
The proportion of people in Europe exposed to high environmental noise levels is:
a. 85 percent
b. 65 percent
c. 45 percent
d. 25 percent
       
There is consensus that, during the day, outdoor noise levels should not exceed:
a. 30 decibels (slight rustling of leaves)
b. 50 decibels (normal indoor conversation)
c. 65 decibels (a passenger car moving at 50 kilometres per hour)
d. 80 decibels (a truck moving at 50 km/h)
       
The most common effect of noise is:
a. Annoyance
b. Sleep disturbance
c. Interference with communication
d. Psycho-physiological effects
       
Normal speech communication becomes impossible at noise levels of about:
a. 50 decibels (normal indoor conversation)
b. 60 decibels (a passenger car moving slowly)
c. 70 decibels (a passenger car moving faster than 60 km/h)
e. 80 decibels (a truck moving at 50 km/h)
       
The exposure to environmental noise acts as a stress factor to health because it leads to measurable changes in:
a. Blood pressure
b. Heart rate
c. Cardiovascular reactions
d. All of the above
       
The percentage of people exposed to unacceptable levels of noise is:
a. The same in all kinds of towns and villages
b. Two or three times higher in cities than the national average
c. Five times higher in the cities than in the small villages
d. None of the above
       
To ensure undisturbed sleep, a single noise event (such as a passing airplane or car) should not exceed:
a. 30 decibels (slight rustling of leaves)
b. 50 decibels (normal indoor conversation)
c. 55 decibels (passenger car idling)
d. 60 decibels (passenger car moving slowly)
       
A major source of noise generation in Europe is:
a. Traffic (road, air, and rail)
b. Industrial activities
c. Recreational activities
d. All of the above
       
Which kind of traffic is responsible for the highest percentage of noise generation in Europe?
a. Air traffic
b. Road traffic
c. Rail traffic
d. All of the above equally
       
Which of the following forms of tourism and recreation can create severe noise problems?
a. Motor sports
b. Off-road racing and the use of water scooters
c. Discotheques and rock venues
d. All of the above
       
Which of the following approaches can help reduce environmental noise?
a. Better engineering and landscape planning
b. More efficient and stricter legal measures
c. Mass education and public awareness on the impact of noise on human health
d. All of the above
       


 
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