Catalyst


prey 97 Priestley, Joseph 216 primary colours 336 probiotic products 88 product life cycle 164


production of materials 164 carbon footprint 165 environmental impact 165


propagation 124 propanol 162 proteins 33, 34 protists 85 protons 176, 177 puberty 142 pulmonary artery 136 pulse 137 pure substances 189, 191 pushes and pulls 290–1


Q quadrat 102, 104, 105, 108–9


R radiation 72–3, 341 radicle 122 radio telescopes 446, 447 radio waves 351, 447 radioactive waste 417 radiotherapy 72 random errors 266–7 reactants 205, 206 reaction force 294 reactions of chemicals see chemical reactions


reactions of metals 240–3 corrosion of metals 241–2 with oxygen 240–1 with water 240 preventing corrosion 242–3 reactivity series of metals 243


recycling 165, 433 red blood cells 134, 135 red cabbage, extracting dyes from 227


Reference Intakes (RI) 37–8 refl ection 333 refl ector telescopes 444 refraction 334–5 renewable energy sources 414–15


reproduction 19, 20


reproductive system 142–7 birth 146 diseases 147


family planning and contraception 147


female reproductive system 142–3


fertilisation 145 460


health of 147 lactation 146 male reproductive system 144 menstrual cycle 143 pregnancy 145–6 puberty 142 sexual intercourse 144


resistance 324–5 calculating 324 and charges 325 ohmmeter 324 ohms 324 resistors 325 using resistance 325 varying 325


respiration 19–20, 54–5 breaking reaction 56 consumers 54 heat 55 and photosynthesis 56–7


respiratory system alveoli 140 diseases of 141 exhalation 141 health of 141 inhalation 141 the parts of 138–9


response 19–20 Rhizopus stolonifer 85 rhubarb, and oxalic acid 213 rib cage and intercostal muscles 139


Road Safety Authority (RSA) 304 robotic lander missions 448 rock cycle 384 rockets 441, 443


rocks 382–3 igneous 382, 384 limestone 383 metamorphic 383, 384 quartzite 383 sedimentary 383, 384 testing for carbon 383


roots 112 Rosetta mission 371 Rosse, William Parsons, Lord 445 runners 117 Russia, and space fl ight 441 rust 241, 242


S


salivary glands 131 salt 228 Sankey diagrams 276, 277 saturated solution 194, 195 Saturn 373, 374 Schneider, Mary and Ryan 30 school canteens 44–5


scientifi c information communication 12 data 8–11 evaluation 13


models 12 peer review 12 responsibility 13 teamwork 13


scientifi c method 1–3 bias 13


hypothesis 1–2 law or principle 3 theory 3


scientifi c responsibility 13 screening of water 390 scurvy 40 sea levels 430 Sea of Tranquility 405 seasons 403 seat belts, the physics of 304–5 seaweed 98 secondary colours 336 seeds 120


animal dispersal 122 dispersal 122–3 fertilisation 121–2 formation 122 germination 123 hydroponics investigation 126–7 plumule 122 radicle 122 self-dispersal 122 water dispersal 122 wind dispersal 122


seismology 382


separation techniques 196–7 chromatography 196 distillation 197 evaporation 196 fi ltration 196 fracking 199 fractional distillation 198 magnetism 197


separating immiscible liquids 197


series circuits 322–3 SETI (Search for Extra Terrestrial Intelligence) 449


settling of water 390 sexual intercourse 144 sexual reproduction in fl owering


plants 120–3 fertilisation and seed formation 122


fl ower 120–1 germination 123 pollination 121 seed and fruit dispersal 122–3 stages 121–3


sexually transmitted infections (STIs) 147


shadows 402


SI units of measurement 259–61 basic units 260 derived units 260–1 metric system 260 quantities 259


sinking and fl oating 300–1 skin cancer 72 small intestine 132 smallpox 89 smog 430 smoking 41, 72, 141 snakes 98 social grouping 98, 99 sodium 178, 190 sodium atoms 245 sodium chloride 190 sodium hydrogen carbonate 230 soft -stemmed plants 112


solar cells dye-sensitised material 420 fl exible fi lms 420


solar eclipse 406 solar energy 414 solar power 420 solar system 366, 372–5 solder 183 solid carbon dioxide 163 solid state 156 solids, properties of 156 solubility curve 193 soluble 192 solute 192


solutions 192–3 concentrated solution 194 concentration 194 crystallisation 195 dilute solution 194 dissolving 192–3 saturated solution 194, 195 suspension 192 types of 194


solvent 192 sound 338–9 sound barrier 339 sound insulation 338 sound waves 338, 339, 446


space commercial space travel 449 fl yby missions 448 human missions 448


modelling mission observations 449


orbiter missions 448 robotic lander missions 448 SETI project 449


space fl ight 441–3 Space Race 441 Space Shuttle Program 442 space travel 376, 449, 452–3 space treaty 453 species 27, 83 speed 288–9 speed of sound 339 splitting light 336–7 stainless steel 183


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