Question

use the app or website to answer the following questions:

1. list 3 ways you can prevent hearing loss
2. in the u.s., the epa requires a what label to be used on packaging?
3. at what db (a) is regular and prolonged unprotected exposure of more than 15 minutes per day risk permanent hearing loss?
4. hearing loss is often caused by what?
5. the louder the sound, the ____________ the amount of time it takes for hearing loss to occur
6. niosh used a __________ exchange rate which is also known as \________\ or \__________\

a) what does this mean?

Explanation:

1. To prevent hearing loss, limit exposure to loud noise, use ear - protection like earplugs or earmuffs, and keep the volume down on personal audio devices.
2. The EPA in the U.S. has various labeling requirements, but for packaging related to environmental concerns, it may require labels indicating recyclability or environmental impact.
3. Regular and prolonged unprotected exposure to sounds at 85 dB(A) or higher for more than 15 minutes per day can risk permanent hearing loss.
4. Hearing loss can be caused by excessive noise exposure, aging (presbycusis), certain medications (ototoxic drugs), infections, and head or ear injuries.
5. The louder the sound, the shorter the amount of time it takes for hearing loss to occur.
6. NIOSH uses a 3 - dB exchange rate, also known as the "doubling - time rule" or "half - life rule". This means that for every 3 - dB increase in sound level, the allowable exposure time is cut in half.

Answer:

1. Limit noise exposure, use ear - protection, keep audio volume down.
2. Labels indicating recyclability or environmental impact (among others).
3. 85 dB(A)
4. Excessive noise, aging, ototoxic drugs, infections, head/ear injuries.
5. shorter
6. 3 - dB; "doubling - time rule"; "half - life rule"