All flashcards
Flashcard 1: What is a decibel scale?
Answer: A logarithmic scale measuring sound intensity. Each 10 dB increase represents 10-fold intensity increase.
Flashcard 2: What is the threshold of pain in decibels?
Answer: 120 dB. Level where sound causes immediate physical pain.
Flashcard 3: What is one environmental effect of noise pollution?
Answer: Disruption of animal breeding patterns. Noise interferes with species reproduction cycles.
Flashcard 4: What is the impact of noise pollution on wildlife?
Answer: Disruption of communication and habitat. Interferes with mating calls and navigation sounds.
Flashcard 5: What does I0 represent in the sound intensity formula?
Answer: The reference intensity, typically 10−12W/m2. Standard threshold of human hearing intensity.
Flashcard 6: Which frequency range is most sensitive to human ears?
Answer: 1,000 to 4,000 Hz. Range of speech and warning sounds for survival.
Flashcard 7: Identify a psychological effect of prolonged noise exposure.
Answer: Increased anxiety. Chronic noise stress elevates cortisol and tension.
Flashcard 8: What is the term for noise pollution affecting the ability to learn?
Answer: Cognitive impairment. Noise interferes with concentration and memory formation.
Flashcard 9: Name a strategy to mitigate noise pollution in residential areas.
Answer: Soundproofing walls. Absorbs and reflects sound waves to reduce transmission.
Flashcard 10: How can vegetation help reduce noise pollution?
Answer: By acting as a natural sound barrier. Plants absorb and deflect sound waves naturally.
Flashcard 11: What is a psychological adaptation to noise pollution?
Answer: Habituation. Psychological adjustment reducing sensitivity to constant noise.
Flashcard 12: What is one environmental effect of noise pollution?
Answer: Disruption of animal breeding patterns. Noise interferes with species reproduction cycles.
Flashcard 13: What is the difference between sound and noise?
Answer: Noise is unwanted sound. Noise is subjectively undesirable or harmful sound.
Flashcard 14: What is a noise map?
Answer: A visual representation of sound levels in a given area. Shows spatial distribution of noise intensity levels.
Flashcard 15: What is the noise criterion curve?
Answer: A standard to evaluate acceptable noise levels indoors. Guidelines for maximum acceptable indoor noise levels.
Flashcard 16: What is the effect of noise pollution on communication?
Answer: Interference with verbal communication. Loud sounds mask speech and disrupt conversation.
Flashcard 17: Identify a common source of noise pollution in urban areas.
Answer: Traffic noise from vehicles. Cars, trucks, and motorcycles are the primary urban noise sources.
Flashcard 18: What is the purpose of a sound level meter?
Answer: To measure sound intensity in decibels. Instrument that quantifies acoustic pressure levels.
Flashcard 19: Identify a way to raise awareness about noise pollution.
Answer: Educational campaigns. Public education about noise health effects and solutions.
Flashcard 20: Which body system can be affected by noise pollution, leading to stress?
Answer: The cardiovascular system. Noise triggers stress hormones affecting heart and blood pressure.
Flashcard 21: What is the role of a noise barrier?
Answer: To reduce the transmission of sound from a source. Physical structures that block sound wave transmission.
Flashcard 22: State one method to reduce noise pollution at the source.
Answer: Using quieter machinery. Prevents noise generation rather than blocking it.
Flashcard 23: What is a cumulative effect of noise pollution on communities?
Answer: Decreased quality of life. Multiple noise sources reduce overall well-being.
Flashcard 24: What is noise pollution?
Answer: Unwanted or harmful sound that disrupts normal activities. Includes both subjective perception and measurable harm.
Flashcard 25: Which type of noise is considered the most disturbing to humans?
Answer: Impulse noise. Sudden, loud sounds cause strongest stress response.
Flashcard 26: What is the formula to calculate sound intensity level in decibels?
Answer: L=10×log10(I0I). Logarithmic relationship between intensity and perceived loudness.
Flashcard 27: Identify a measure to reduce noise pollution from aircraft.
Answer: Implementing flight curfews. Restricts flights during quiet hours for communities.
Flashcard 28: What is the threshold of pain in decibels?
Answer: 120 dB. Level where sound causes immediate physical pain.
Flashcard 29: Identify a way to reduce noise pollution in schools.
Answer: Installing acoustic panels. Materials that absorb sound and reduce reverberation.
Flashcard 30: Identify a community measure to control noise pollution.
Answer: Enforcing noise ordinances. Local laws setting maximum permitted noise levels.