HEARING

Hearing is one of the most incredible senses—we can detect sounds from as low as 20 Hz (deep bass rumble) to up to 20,000 Hz (high-pitched squeaks), though that upper range drops with age.
Here’s a cool breakdown of how the human ear works:
britannica.comhappyearshearing.comnidcd.nih.gov

Sound waves enter the outer ear, vibrate the eardrum, get amplified by the tiniest bones in your body (the ossicles—malleus, incus, and stapes, which together are smaller than a penny!), and then hit the cochlea in the inner ear:
en.wikipedia.orgbritannica.com

There, fluid and hair cells turn vibrations into electrical signals for your brain. Sound waves look a bit like this in illustrations:
vexels.comistockphoto.com

Fun fact: Your ears never stop “hearing,” even when you’re asleep—your brain just filters out most stuff. And protect those ears; loud noises over 85 dB can permanently damage them fast! What’s your favorite sound? 😊