28 results for “energy”
Matter, Energy & Physics
Energy and Heat
energy, is the most reliable law in physics. The forms A moving object has kinetic energy
Article · 4 min read
Space & the Universe
Dark Matter and Dark Energy
energy now accounts for about 68 percent of the universe's total energy, and its share
Article · 3 min read
Chemistry
Chemical Reactions
Energy in, energy out Breaking bonds takes energy, and forming new bonds releases it. If the new bonds
Article · 3 min read
Life & Biology
Ecosystems and Food Webs
energy from the Sun and building it into sugar. Everything else is a consumer, getting its energy
Article · 4 min read
Plants & Fungi
Photosynthesis: How Plants Eat Light
energy of sunlight. The process is called photosynthesis, and nearly every living thing on Earth, including
Article · 3 min read
Matter, Energy & Physics
The Quantum World
energy is emitted in discrete packets, quanta, rather than continuously. In 1905 Einstein showed that light
Article · 4 min read
Matter, Energy & Physics
Light
energy set by its colour. A blue photon carries more energy than a red one; an X-ray photon
Article · 4 min read
Planets & the Solar System
The Sun
energy, exactly as Einstein's famous equation describes. The Sun converts around 600 million tonnes of hydrogen
Article · 4 min read
Life & Biology
The Origin of Life
energy sources such as ultraviolet light, produced nucleotides and sugars too. Nature does the same chemistry
Article · 4 min read
Matter, Energy & Physics
Sound
energy on the move, and once you understand how it travels, a great deal about music
Article · 3 min read
Life & Biology
What Is Life? The Cell
energy currency that drives everything else. Plant cells carry an extra structure, chloroplasts, which capture sunlight
Article · 4 min read
Planet Earth
Plate Tectonics and Earthquakes
energy is released as vibrations that race through the ground. The point where slipping begins is the focus
Article · 4 min read
Chemistry
The Chemistry of Life
energy. Plants make glucose by photosynthesis, then link thousands of them together. Joined one way, they
Article · 3 min read
Matter, Energy & Physics
Atoms
energy but no definite position until it is measured. The shells are not tracks but allowed
Article · 4 min read
The Human Body
Muscles
energy currency, a molecule called ATP, made by burning sugar and fat with oxygen. Muscles at full
Article · 4 min read
Space & the Universe
The Life of a Star
energy. The newborn star lights up and blows away the remaining gas around it. A single
Article · 3 min read
The Human Body
Lungs and Breathing
energy and carries away the carbon dioxide that burning produces. The journey of a breath Air enters
Article · 4 min read
Planet Earth
Inside the Earth
energy, and partly from the decay of radioactive elements such as uranium, thorium and potassium scattered
Article · 4 min read
Matter, Energy & Physics
Electricity and Magnetism
energy into heat, which is how a toaster, a kettle and the filament of an old-fashioned
Article · 4 min read
Life & Biology
Dinosaurs and Mass Extinctions
energy equivalent to billions of atomic bombs, blasted a crater 180 kilometres wide, and triggered earthquakes
Article · 3 min read
The Human Body
Digestion
energy you burn came in through this tube. Its health shapes your weight, your immunity, your
Article · 4 min read
Planet Earth
Weather and Climate
energy equivalent to hundreds of times the world's electricity consumption. Its eye, a few tens
Article · 4 min read
Chemistry
Water: The Strangest Ordinary Substance
energy goes into breaking hydrogen bonds before it speeds the molecules up. That makes oceans slow
Article · 3 min read
Animals
Animal Migration
energy from one ecosystem to another. They are also among the oldest and most reliable rhythms
Article · 4 min read
Planets & the Solar System
Uranus and Neptune
energy it receives from the Sun, driven by heat left over from its formation, and that
Article · 4 min read
The Human Body
The Senses
energy and protein; bitter warns of poisons, which is why children, who have more taste buds
Article · 4 min read
The Human Body
The Brain
energy, almost all as glucose, delivered by a dense network of blood vessels. It cannot store
Article · 4 min read
Matter, Energy & Physics
Gravity
energy, which show themselves only through gravity, really are, remain among the largest open questions in science
Article · 4 min read
