1. Orbits and Motion – Differences between the orbits of comets and planets, the speed variation of a comet in its orbit, and identifying the fastest-moving position. 2. Atomic Structure and Radioactivity – Definitions of atomic number, mass number, isotopes, and radioactive decay; differences between alpha and beta radiation. 3. Waves and Energy Transfers – Characteristics of sound and light waves, calculation of wave speed and frequency, and differences in their properties. 4. Planetary Properties – Relationship between gravitational field strength, orbital radius, and orbital speed; factors affecting gravitational strength on different planets. 5. Energy and Motion – Energy conservation principles, energy transfer in moving objects, efficiency calculations, and kinetic energy determination. 6. Forces and Motion – Understanding vector quantities, forces acting on objects in motion, pressure variations in liquids, and energy changes in free-fall situations.