7th Grade Science C8 Waves C7 Electricity C15 Earth, Moon and Sun C11 Acids, Bases and pH Scale C10 Bonding & Chemical Reactions C9 Elements of the Periodic Table C13 Atmosphere C12 Water C4 Ecosystems and Biomes C3 Cell Processes and Energy C1 Scientific Thinking 2nd Quarter Extra Credit Kiwanis STEM Fair information