9th class English online Test Unit 11- Noise In the Environment

 9th class English  online Test  Unit 11-  Noise In the Environment

Unit 11 – Noise In The Environment Unit 11 – Noise In The Environment

Quiz

 

1. What is noise pollution?
   1.   A) Sound pollution caused by natural events
   2.   Unwanted or harmful sounds in the environment
   3.   Loud sounds in music
   4.   Sound produced by animals
2. Which of the following is a common source of noise pollution in urban areas?
   1.   Birds chirping
   2.   Traffic and vehicles
   3.   Flowing rivers
   4.   Thunderstorms
3. What is the primary unit used to measure sound intensity?
   1.   A) Watts
   2.   Decibels (dB)
   3.   Hertz (Hz)
   4.   Joules
4. Which level of sound (in decibels) is considered dangerous to human hearing?
   1.   30 dB
   2.   60 dB
   3.   85 dB
   4.   100 dB
5. Prolonged exposure to high levels of noise can lead to:
   1.   Hearing loss
   2.   Improved concentration
   3.   Better sleep
   4.   Increased productivity
6. What is the main effect of noise pollution on human health?
   1.   Insomnia
   2.   Increased vision
   3.   Boost in energy levels
   4.   Weight loss
7. Which of the following is a noise control method?
   1.   Using soundproof materials
   2.   Increasing vehicle speed limits
   3.   Ignoring noise complaints
   4.   Raising the volume of music
8. Which animal is highly sensitive to noise pollution?
   1.   Elephant
   2.   Dog
   3.   Cat
   4.   Whale
9. Which of the following is not a common source of noise pollution?
   1.   Factories
   2.   Airplanes
   3.   Forests
   4.   Construction sites
10. What is the main purpose of using noise barriers along highways
    1.   To reduce traffic speed
    2.   To enhance vehicle engine sounds
    3.   To reduce the impact of noise pollution on nearby areas
    4.   To make highways look more attractive