1. Ecosystems and Food Chains – Identifying producers, consumers, and decomposers, seed dispersal methods, and microhabitats. 2. Forces and Motion – Air resistance in parachutes, friction and speed in cycling, forces acting on a water-skier, and Newton’s laws of motion. 3. Electricity and Circuits – Identifying circuit components, factors affecting motor speed, conductors and insulators, and circuit errors. 4. States of Matter and Changes – Melting, evaporation, condensation, reversible vs. irreversible changes, and solubility of solids in water. 5. Human Biology and Adaptations – Heart function, respiration vs. breathing, pulse rate changes, and plant stem water transport. 6. Scientific Investigations and Data Analysis – Fair testing principles, reliability improvements, variable control, and graphical data interpretation in solubility and seed growth experiments.