11 results for “sound”
Matter, Energy & Physics
Sound
sound wave. The air itself does not travel with the sound. Each molecule just jiggles back
Article · 3 min read
Animals
Whales and Dolphins
sound. Seeing with sound Light fades quickly in water, but sound travels far and fast, and toothed
Article · 4 min read
The Human Body
The Senses
sound waves, molecules drifting in the air, pressure on the skin: none of these are experiences
Article · 4 min read
Animals
Sharks
sounds from kilometres away. A line of pressure sensors along each side of the body feels
Article · 3 min read
The Human Body
The Skeleton and Bones
sound from the eardrum inward. What bone is made of Bone is a composite material, like
Article · 5 min read
Matter, Energy & Physics
Energy and Heat
sound and a dent. A stretched spring, a charged battery, a tank of petrol, a slice
Article · 4 min read
Planet Earth
Weather and Climate
sounds small. It is enough to melt glaciers and Arctic sea ice, raise the sea by over
Article · 4 min read
The Human Body
The Heart and Blood
sound of them closing is the "lub-dub" a doctor hears through a stethoscope. The rhythm
Article · 4 min read
Planet Earth
Plate Tectonics and Earthquakes
sounds trivial. Over a hundred million years it adds up to thousands of kilometres. The continents
Article · 4 min read
Animals
Birds
sound alone. Migration Every autumn billions of birds leave the north for warmer places, and every
Article · 3 min read
Matter, Energy & Physics
Light
sound, it crosses a vacuum without trouble. The distance between one crest and the next is its wavelength
Article · 4 min read
