Cambridge Progression Test Stage 9 Science 2018 Paper 1

1. Biology: photosynthesis (word equation, variegated leaves vs green leaves), food chains (sampling methods: pitfall, pooter, sweep net), food chain interpretation, variation (goldfish traits), deforestation impact on CO₂ and oxygen, animal habitat loss.
2. Chemistry: reaction rates (concentration, temperature, particle collisions), metals and reactivity series, displacement reactions, salt formation (calcium nitrate process steps), Periodic Table interpretation (symbols, groups, periods, electron count).
3. Physics: series and parallel circuits, current flow and brightness comparison, density calculation (mass/volume), evaporation mechanism and cooling effect, pressure calculations (P = F/A), effects of changing area or force.
4. Earth and environment: impact of road construction on ecosystems, tree removal and atmospheric gas changes, biodiversity loss, scientific reasoning based on environmental consequences.
5. Scientific method and safety: improving reliability in insect sampling, identifying safety risks (e.g. pooter use), interpreting circuit diagrams and flow, observational analysis of experimental trends and anomalies.
6. Data and modeling: graphical interpretation of reaction rates, Periodic Table use for property prediction, drawing logical conclusions from practical setups (e.g. food chain dishes, evaporation diagrams).