Green Education Foundation
How Loud is Too Loud?
Ever wonder how loud a sound has to be to cause damage? Young scientists explore sound properties by researching decibel levels. They discuss how sound is perceived by our ears and our brains and why it can cause negative health effects...
CK-12 Foundation
Ck 12: Physical Science: Intensity and Loudness of Sound
[Free Registration/Login may be required to access all resource tools.] Discusses the intensity of sound and how it relates to loudness, the decibel levels of different sounds, and factors that affect sound intensity.