Contents Uni t Learning s i tuat ion C H A L L E N G E Susta inabl e Deve l opment Goa l s (SDG ) and the i r target s 7 Forces 162 Develop an experiment on friction and analyse industry-related innovations SDG 9: Industry, innovation and infrastructure Target 9.5 8 Gravitational forces 186 Write a research report on a mystery of the Universe SDG 9: Industry, innovation and infrastructure Target 9.5 9 Forces in fluids 206 Explain how some of the machines around us work. SDG 9: Industry, innovation and infrastructure Target 9.b 10 Energy and its transfer 230 Design a campaign to promote energy saving SDG 7: Affordable and clean energy Target 7.1 11 Waves. Light and sound 262 Improve the lighting and acoustics of a room SDG 7: Affordable and clean energy Target 7.3 Annexes 294
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