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FIND OUT MORE. Atoms 157 • Colour 180 • Eye 140 • Lenses 181 • Matter 156 WHY IS A SWIMMING POOL DEEPER THAN IT LOOKS? Refractio ...

180 FIND OUT MORE. Eye 140 • Light 178–179 Light has different wavelengths, which we see as colours. The range of wavelengths we ...

FIND OUT MORE. Eye 140 • Light 178–179 When you look through a magnifying glass, or take a picture with a camera, you are using ...

A lightning strike demonstrates the incredible energy of electricity. This intense flash of heat and light is created naturally ...

Magnetism is an invisible force that attracts or repels some materials, such as iron and steel, but not others, like plastic and ...

184 Science and Technology An electric current flows in a loop – powering bulbs or other electric. COMPONENTS. The loop is an el ...

185 FIND OUT MORE. Chemistry 162 • Electricity 182 • Electricity Supply 187 • Electromagnetism 186 The different objects that ma ...

FIND OUT MORE. Circuits 184–185 • Electricity 182 • Magnetism 183 186 An electric current produces magnetism, and a magnet can p ...

FIND OUT MORE. Circuits 184–185 • Electricity 182 • Engines 198–199 Science and Technology^187 Electricity has revolutionized th ...

188 Science and Technology FIND OUT MORE. Circuits 184–185 • Elements 160–161 • Sound 176–177 • Telecommunications 192–193 Elect ...

Science and Technology^189 FIND OUT MORE. Computers 190 • Electronics 188 A microchip is an electronic device built as a single ...

190 Science and Technology FIND OUT MORE. Electronics 188 • Robots 194 An electronic machine that uses binary code to store and ...

Science and Technology^191 FIND OUT MORE. Computers 190 • Light 178–179 • Telecommunications 192–193 The global computer network ...

192 Science and Technology Telecommunications are messages carried round the world in seconds by electric signals and waves from ...

FIND OUT MORE. Home Entertainment 351 • Internet 191 • Media 298–299 • Networks 191 • Satellites 28 • Sound 176–177 193 HOW ARE ...

194 Science and Technology Robots are automatic machines. Some robots can perform mechanical and repetitive jobs faster, more ac ...

FIND OUT MORE. Atoms 157 • Machines 196–197 HOW COULD NANOTECHNOLOGY BUILD A CARBON CAR? Nanomachines could make things, such as ...

196 Science and Technology From bottle openers to cranes, machines make work easier. Simple machines include. LEVERS,. PULLEYS, ...

FIND OUT MORE. Engines 198–199 • Forces 164 • Motion 165 WHY DOES A SLOPE MAKE IT EASIER TO RAISE A LOAD? When you push a load u ...

198 Science and Technology A machine that converts energy from a fuel to do work is an engine. Steam engines were the first engi ...