Includes index.

"This book deals with physics, its practical uses and the social issues it raises. You are most likely to find the book useful if you are following a GCSE course in physics, or taking physics as part of a GSCE Co-ordinated Science Course.

To help you find things more easily, the book is written in two-page units. Each unit deals with a different topic.
Use the contents page if you want to see the main headings
Use the index at the back if you want to look up information about one particular thing. The index is alphabetical.
Use the questions to test yourself. The questions at the end of each unit cover the main ideas. The questions at the back of the book are from GCSE examination papers.
Use the reference section near the back of the book if you need to look up the following: units of measurement; electrical symbols; how to revise; revision checklist; important equations; answers to questions.

Physics is an important subject in today's world. It doesn't just happen in laboratories. It's all around you, in fairgrounds, fields, farms and factories. You'll find physics everywhere." (Introduction, p. 3)

CONTENTS

Part 1 UNITS AND FORCES 1.1 Units for measuring 1.2 Density 1.3 Measuring density 1.4 On the move 1.5 Motion graphs 1.6 Timing with tape 1.7 Falling freely 1.8 Thrills and spills 1.9 Force -- the secret of acceleration 1.10 Weight: The pull of gravity 1.11 Balanced forces 1.12 Action and reaction 1.13 Speedy delivery 1.14 Turning effects 1.15 Centre of gravity 1.16 Stretching and compressing 1.17 Pressure 1.18 Pressure in liquids 1.19 Pressure from the atmosphere 1.20 Measuring air pressure

Part 2 ENERGY AND MOLECULES 2.1 Work and energy 2.2 Energy changes 2.3 Potential and kinetic energy 2.4 Engines 2.5 Efficiency and power 2.6 Machines 2.7 Liquid machines 2.8 Energy resources 2.9 Saving energy 2.10 Moving molecules 2.11 Temperature 2.12 Thermometer 2.13 Expansion 2.14 Using expansion 2.15 Expanding liquids 2.16 Expanding gases 2.17 Squashed gases 2.18 Conducting heat 2.19 Convection 2.20 Holding heat 2.21 Coping with cold 2.22 Melting and freezing 2.23 Making vapour
2.24 Cooling by evaporation 2.25 Changing the weather

Part 3 RAYS AND WAVES 3.1 Rays of light 3.2 Flat mirrors 3.3 Curved mirrors 3.4 Bending light 3.5 Inside reflections 3.6 Convex lenses 3.7 Lenses at work 3.8 Waves 3.9 Ripples of water and light 3.10 Electromagnetic waves 3.11 Heat radiation 3.12 Sound waves 3.13 Vibrations 3.14 Speed of sound 3.15 Sounds high and low 3.16 Noise

Part 4 CURRENTS AND MAGNETS 4.1 Electric charge 4.2 Charge on the move 4.3 A simple circuit 4.4 Voltage 4.5 Resistance 4.6 Danger! Electricity 4.7 Series and parallel 4.8 Solving circuits 4.9 Mains electricity 4.10 Electrical power 4.11 Circuits around the house 4.12 Buying electricity 4.13 Magnets 4.14 Magnetic fields 4.15 Magnetism from currents 4.16 Electromagnets 4.17 The magnetic force on a current 4.18 Electric motors 4.19 Electricity from magnetism 4.20 Generators 4.21 Transformers 4.22 Power across the country 4.23 Power plus

Part 5 ATOMS AND ELECTRONS 5.1 Inside atoms 5.2 Nuclear radiation 5.3 Living with radiation 5.4 Radiation: detecting it . . . and using it 5.5 Radioactive decay 5.6 Nuclear power 5.7 The oscilloscope 5.8 Resistors 5.9 Capacitors 5.10 Building a system 5.11 Diodes 5.12 Power supplies 5.13 Transistors 5.14 Transistor switches 5.15 Logic gates 5.16 Machines that think 5.17 Amplifiers

Revision time Units Equations Revisions checklist Symbols Revision Test Further questions Answers Index Acknowledgements