Magnetism and Electricity: what is magnetism, how doew it work, complete and incomplete circuits, parallel and series circuits, conductors and insulators, and electromagnets.
Sound: vibrations traveling through solids, liquids and gases and how it affects the pitch
Light: how does light change as it travels through different materials (reflection, refraction, absorption)
Astronomy: earth's movements (rotation, revolution), affects on seasons, solar system (stars, planets, moons), lunar phases, use of telescopes, galaxy vs. the universe
Plants and Animals: plant reproduction, plant and animal adaptation, impact of environment on extinction, understanding fossils