What is Noise Pollution Sources of Noise Pollution

The video tutorial from Let's Tute introduces the concept of noise, defining it as an unpleasant sound measured in decibels. It highlights that exposure to noise levels above 85 decibels can be harmful. The tutorial categorizes noise sources into indoor and outdoor types, detailing examples like household gadgets and social events. It emphasizes that noise is a form of environmental pollution, albeit less damaging than other types. The session concludes by mentioning that the effects and control of noise pollution will be covered in the next session.

What is the threshold decibel level above which noise can become hazardous if exposure is prolonged?

• 85 decibels

• 105 decibels

• 75 decibels

• 95 decibels

Which of the following is NOT considered an indoor source of noise?

• Vacuum cleaner

• Loudspeakers

• Fireworks

• Washing machine

Which of the following is a common source of outdoor noise?

• Refrigerator

• Television

• Construction sites

• Blender

What type of events are mentioned as sources of outdoor noise?

• Social events

• Indoor parties

• Library meetings

• Quiet gatherings

How is noise classified in terms of environmental impact?

• As a major pollutant

• As a minor inconvenience

• As environmental pollution

• As a beneficial sound