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Sound Measurement and Noise Pollution Awareness Guide

Learn how to measure sound levels using decibels and identify everyday noise levels. Discover the dangers of exposure to high decibels and how to prevent hearing damage with ear protection.

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Sound Measurement and Noise Pollution Awareness Guide

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  1. What we will do today: • State how me measure sound levels. • State the unit of sound. • Carry out experiments to find the sound levels of everyday occurrences.

  2. Measuring Sound Level • We measure sound levels with a sound meter. • Sound levels are measured in a unit called decibels. • Decibels have the symbol dB.

  3. Now measure some different sounds and record them in the table below:

  4. Typical Noise levels

  5. Danger!!! • Regular exposure to noise above 90dB can cause damage to hearing. • For this reason, noises above 90dB are described as ‘noise pollution’. • We must know least two examples. • We can prevent hearing damage by wearing ear muffs or using sound insulation. • These absorb the loud sounds and protect the ears.

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