5.12 5.13 5.14
5.15 5.16
Keeping safe on the road 144 Forces and energy in springs 146 Required practical: Investigate the relationship between force and the extension of a spring 148 Key concept: Forces and acceleration 150 Maths skills: Making estimates of calculations 152
Chapter 6 Waves 6.1 Describing waves 6.2 Transverse and longitudinal waves 6.3 Key concept: Transferring energy or information by waves 6.4 Measuring wave speeds 6.5 Required practical: Measuring the wavelength, frequency and speed of waves in a ripple tank and waves in a solid 6.6 Reflection and refraction of waves 6.7 The electromagnetic spectrum 6.8 Reflection, refraction and wave fronts 6.9 Gamma rays and X-rays
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158 160 162 164 166
168 170 172 174 176
6.10 6.11
6.12 6.13 6.14
Ultraviolet and infrared radiation 178 Required practical: Investigate how the amount of infrared radiation absorbed or radiated by a surface depends on the nature of that surface 180 Microwaves 182 Radio and microwave communication 184 Maths skills: Using and rearranging equations 186
Chapter 7 Electromagnetism 7.1 Magnetism and magnetic forces 7.2 Compasses and magnetic fields 7.3 The magnetic effect of a solenoid 7.4 Calculating the force on a conductor 7.5 Electric motors 7.6 Key concept: The link between electricity and magnetism 7.7 Maths skills: Rearranging equations
192 194 196 198 200 202
Appendix - Circuits Appendix - Equations Glossary Index
212 213 215 225
204 206
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