1. Forces and Motion | Investigating how mass affects the falling speed of cupcake cases, measuring velocity with a stopwatch and ruler, calculating weight using mass and gravitational field strength, and drawing force arrows for air resistance.
2. Energy Transfers and Work Done | Calculating gravitational potential energy of a football, determining kinetic energy using mass and velocity, describing energy transfers when a ball hits a wall, and calculating free-fall distance using motion equations.
3. Velocity-Time Graphs and Acceleration | Identifying rest periods from a lift’s velocity-time graph, calculating maximum velocity, determining acceleration during initial motion, and sketching downward motion after a time interval.
4. Sound Waves and Refraction | Calculating reaction time percentage in sound speed experiments, improving sound speed measurement by increasing distance, comparing sound and light wave refraction differences in air and water.
5. Radioactivity and Half-Life | Identifying radioactive isotopes, determining alpha particle travel distances in air, completing nuclear equations for radioactive decay, and plotting activity decay based on half-life calculations.
6. Momentum and Newton’s Laws | Calculating momentum of a moving atom, force exerted on a ball by a wall after a collision, designing an experiment to investigate how force affects acceleration, and describing Newton’s second law in a practical setup.