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DK Science: Respiratory System

BLOOD SUPPLY LUNG AIRWAYS ALVEOLI GAS EXCHANGE IN ALVEOLI BIOGRAPHY: JOHN SCOTT HALDANE Scottish, 1860-1936 SPEECH BREATHING FIND OUT MORE The respiratory system provides your body…

DK Science: Energy Sources

ENERGY FROM THE SUNINSIDE A NUCLEAR POWER STATIONRENEWABLE ENERGYGEOTHERMAL ENERGYFIND OUT MOREEverything we do takes energy, which we get from many different sources. Most of the energy on Earth…

DK Science: Endocrine System

ENDOCRINE GLANDS OVARIES TESTES HORMONE FACTORY FIND OUT MORE Many body processes are influenced by hormones, chemical messengers produced by glands of the endocrine system. These glands…

DK Science: Electric Motors

ELECTRIC TRAINSBIOGRAPHY: NIKOLA TESLA American, 1856-1943FIND OUT MOREElectric motors make things move. They convert electrical power into mechanical power using electromagnetic attraction and…

DK Science: Changing States

SOLID PARTICLESLIQUID PARTICLESGAS PARTICLESSOLAR PLASMAMELTINGBOILINGFIND OUT MOREAll matter exists as solids, liquids, or gases. These are called the states of matter. Matter can change from…

DK Science: Separating Mixtures

DECANTING GOLDDISTILLATIONFILTRATIONCHROMATOGRAPHYFIND OUT MOREThe substances in a mixture are separated by the differences in their physical properties, such as their particle size. The more…

DK Science: Digestive System

PARTS OF THE DIGESTIVE SYSTEM MOUTH STOMACH INTESTINES FIND OUT MORE The job of the digestive system is to break down the food we eat into smaller units called nutrients. The nutrients…

DK Science: Digital Electronics

ANALOGUE – SIMPLE BUT RISKYSAMPLINGELECTRONIC CALCULATORLOGIC CIRCUITSFIND OUT MOREThe simplest kind of electronics, known as analogue electronics, works with continuous signals – a smoothly rising…

DK Science: Synthetic Fabrics

FASTSKIN™FASTSKIN™ TECHNOLOGYMAKING SYNTHETIC FABRICSNYLON STRANDSFIND OUT MORESynthetic fabrics, such as nylon and polyester, are produced entirely from chemicals. Natural fabrics, such as…

DK Science: Immune System

INSIDE A LYMPH NODE THE LYMPHATIC SYSTEM THE IMMUNE RESPONSE FIND OUT MORE The role of the immune system is to protect the body against germs and cancers. When it detects substances that…