BETA
Chapter 1
The outer and middle ear
Chapter 2
The inner ear and the brain
Chapter 3
The balance system
Chapter 4
Hearing health and sound limits
YOUR GOAL
Master of The human ear
Ch 4 · Hearing health and sound limits
artiteacher Tilt the fluid and guide sound waves to discover how your ears hear and balance.
artiteacher Hearing health and sound limits
Fluid in the loops, fluid in the loops, Keeping us steady, yeah, fluid in the loops!
artiteacher Humans hear from 20 to 20,000 Hertz, while other animals hear much higher or lower frequencies.
artiteacher A tiny muscle in the middle ear contracts to dampen extremely loud sounds automatically.
Fun Fact
Quietest place: The quietest room on Earth, Microsoft's anechoic chamber, is so quiet you can hear your own heartbeat.
Glossary
decibel (noun)
A unit used to measure the intensity of a sound. The World Health Organization warns that sounds exceeding 85 decibels can cause permanent inner ear damage.
A unit used to measure the intensity of a sound. The World Health Organization warns that sounds exceeding 85 decibels can cause permanent inner ear damage.
Quiz
Which animal group is famous for using infrasound below 20 Hertz to communicate?
Quiz
Above what decibel level can prolonged exposure cause permanent hearing damage?
Quiz
Approximately how much faster does sound reach the closer ear compared to the further ear?