Hearing

Loudness is measured in decibels. If normal conversation is about 60 decibels, how loud do you think a lawnmower or a football game is? Make your best guess, and then test out a variety of sounds with the CDC's Noise Meter.

Think you know all about hearing? Take this interactive quiz and see how you do!

Why do sharks have ear stones? Is there sound on the moon? Which sport has the world's loudest stadium? Take these five fun quizzes and learn more.

Can you locate and label the eight major parts of the ear?