WJEC Physics for AS: Study and Rev Guide

Contents How to use this book 4 Knowledge and Understanding U nit 1 Motion, Energy and Matter 6 1.1 Basic physics 8 1.2 Kinematics 18 1.3 Dynamics 29 1.4 Energy concepts 40 1.5 Solids under stress 50 1.6 Using radiation to investigate stars 62 1.7 Particles and nuclear structure 67 U nit 2 Electricity and Light 76 2.1 The conduction of electricity 78 2.2 Resistance 84 2.3 DC circuits 91 2.4 The nature of waves 99 2.5 Wave properties 106 2.6 Refraction of light 118 2.7 Photons 124 2.8 Lasers 137 3 Practical and data-handling skills 142 4 Exam practice and technique 156 Answering exam questions 156 Exam tips 157 Practice questions 161 Questions and answers 167 Quickfire answers 186 Extra questions answers 191 Practice questions answers 200 Index 207