Science 9

Big idea: Cells are derived from cells

• DNA structure
• Fertilization
• Asexual reproduction 
• Mitosis 
• Budding, vegetative propagation, binary fission
• Sexual reproduction 
• Meiosis
• Human sexual reproduction 
• Fertilization

Big Idea: The electron arrangement of atoms impacts their chemical nature

• Element properties as organized in the periodic table
• Atomic numbers, atomic masses
• Isotopes
• Atoms and ions
• The arrangement of electrons determines the compounds formed by elements
• Ionic compounds + nomenclature
• Covalent compounds + nomenclature

Big Idea: Electric current is the flow of electric charge

•  Circuits must be complete for electrons to flow 
• Voltage, current, resistance
• Series circuits
• Parallel circuits
• Hazards of using electricity
• Sustainable use of electricity

Big Idea: The biosphere, geosphere, hydrosphere, and atmosphere are interconnected, as matter cycles and energy flows through them

• Effects of solar radiation on the cycle of matter and energy
• Matter cycles within biotic and abiotic components of ecosystems
• Earth's spheres: biosphere, atmosphere, lithosphere and hydrosphere
• Interconnectedness and sustainability