Noise Pollution and Airports

What is the unit of measurement for loudness in hearing?

• Decibel

• Hertz

• Pascal

• Watt

What does the dBA scale measure?

• Frequency of sound

• Loudness matching the human ear response

• Duration of sound

• Speed of sound

What is the quietest sound that can be heard by the human ear measured in?

• 1 Bel

• 0 Bel

• 10 Decibels

• 100 Decibels

What is the purpose of the Environmental Studies Fact Sheet?

• To explain noise pollution measurement

• To describe weather patterns

• To analyze economic growth

• To discuss wildlife conservation

What is the significance of low frequency sounds in the dBA scale?

• They are amplified

• They have less significance

• They are ignored

• They are doubled

What is the purpose of Natura 2000 as mentioned in the document?

• To increase urban development

• To protect Europe’s most valuable and threatened species and habitats

• To promote tourism in Europe

• To expand industrial areas

What is the standard UK metric for assessing aviation noise impacts?

• 60LAeq

• 57LAeq

• 70LAeq

• 50LAeq

What is one reason the Commission concluded against replacing domestic flights with high-speed trains?

• High-speed trains are more expensive

• Not enough slots would become available

• High-speed trains are slower

• High-speed trains are less comfortable

What has improved aircraft design done to reduce noise generation?

• Increased the size of engines

• Made engines louder

• Improved aerodynamic features and quieter engines

• Reduced fuel efficiency

What is one method mentioned for reducing noise from aircraft engines?

• Increasing engine size

• Using louder exhaust systems

• Acoustically absorbent material lining the air intakes and exhausts

• Removing all exhaust systems