13 results for “ear”
The Human Body
The Senses
ear funnels it down a canal to the eardrum, which vibrates, and three tiny bones, the smallest
Article · 4 min read
Matter, Energy & Physics
Sound
ear, it makes your eardrum vibrate in the same pattern, and your brain turns those vibrations
Article · 3 min read
Planet Earth
Inside the Earth
Beneath your feet lie 6,370 kilometres of rock and metal, hotter than the surface of
Article · 4 min read
Planet Earth
Plate Tectonics and Earthquakes
The continents are moving at the speed your fingernails grow. Where they collide, mountains rise; where
Article · 4 min read
The Human Body
The Heart and Blood
A fist-sized pump pushes five litres of blood around 100,000 kilometres of vessels every
Article · 4 min read
Planets & the Solar System
Saturn
ears, that came and went over the years. It took another half century and better optics
Article · 4 min read
Animals
Sharks
ears, which is lighter than bone and lets them turn and accelerate fast. Their skin is covered
Article · 3 min read
Animals
Mammals
ear that evolved from reptile jaw bones, a diaphragm for breathing, and a large brain relative
Article · 4 min read
The Human Body
Muscles
ear. They are the only muscles under conscious command. Smooth muscle lines the walls of hollow
Article · 4 min read
The Human Body
The Skeleton and Bones
ear, about three millimetres long, one of three tiny bones that carry sound from the eardrum
Article · 5 min read
Planets & the Solar System
The Sun
A ball of hydrogen a million times the volume of Earth, fusing 600 million tonnes of
Article · 4 min read
Space & the Universe
The Big Bang
The universe began 13.8 billion years ago as something hotter and denser than anything we can
Article · 4 min read
Life & Biology
The Origin of Life
Around four billion years ago, on a hot young planet, chemistry became biology. Nobody knows exactly
Article · 4 min read
