Short Answer 
Sound intensity measures the power of sound in Watts per square meter, crucial for comparing different sounds’ strengths. The decibel scale quantifies sound intensity logarithmically, where each increase of 10 dB signifies a tenfold increase in intensity, with levels impacting human hearing health significantly.
Step 1: Understand Sound Intensity
Sound intensity is defined as the power of the sound in Watts per unit area, specifically in square meters. It is crucial to comprehend that sound intensity is not just about how loud a sound is, but it is fundamentally tied to its energy transmission through a specific area. Understanding sound intensity helps in comparing different sounds, as they can vary immensely in strength.
Step 2: Know the Decibel Scale
The decibel (dB) scale is used to measure sound intensity. It is logarithmic, meaning each increase of 10 dB represents a tenfold increase in intensity. The threshold of hearing is approximately 0 dB, and the scale includes common sounds such as:
- 60 dB: Normal conversation
- 110 dB: Power saw at 3 feet
- 180 dB: Jet engine at 100 feet
Step 3: Sound Intensity Contextualization
To contextualize the sound intensity values, it’s essential to recognize the impact they have in everyday life. Sounds are categorized according to their potential effects on human hearing. Prolonged exposure to sounds above 85 dB can cause hearing damage. Understanding these levels aids in awareness about noise pollution and its effects on health and well-being.