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Natural Sciences
Grade 9
Life and living
- Cells
- Cell structure
- Diffusion and osmosis
- Differences between plant and animal cells
- Cells in tissues, organs and systems
- DNA and genetics
- Body systems - The digestive system
- Human Nutrition
- Body systems - The circulatory system
- Body systems - The respiratory system
- Body systems - musculoskeletal system
- Body systems - The excretory system
- Excretion
- Body systems - The nervous system
- Body systems - The reproductive system
- Purpose of reproduction and puberty
- Human reproductive system
- Pregnancy and birth
- Stages of reproduction (1)
- Stages of reproduction (2)
- Breathing
- Gaseous Exchange
- Circulatory Systems
- Respiration
- A healthy diet
- The alimentary canal and digestion
- The human digestive system
Matter and materials
- The periodic table of elements
- Naming compounds
- Chemical equations representing reactions
- Balancing Chemical Equations
- Balancing equations
- Reactions of metals with oxygen
- Reaction of iron with oxygen
- Reaction of magnesium with oxygen
- Formation of rust
- Ways to prevent rusting
- Reactions of non-metals with oxygen
- Reaction of carbon with oxygen
- Reaction of sulphur with oxygen
- The concept of pH value
- Neutralisation and pH
- Reactions of acids with bases
- Reactions of acids with metals
Energy and change
- Forces
- Types of forces
- Contact forces - Friction
- Contact forces - Tension
- Contact forces - Compression
- Non-contact forces - Gravitational force
- Non-contact forces - Magnetic force
- Non-contact forces - Electrostatic force
- Current Electricity
- Electric cells
- Uses of resistors (1)
- Uses of resistors
- Factors that affect resistance in a circuit (1)
- Factors that affect resistance in a circuit
- Series circuits (1)
- Series circuits
- Parallel circuits
- Safety practices with electricity
- 3-pin plug
- Electricity generation (1)
- Electricity generation
- Nuclear power in South Africa
- National electricity grid
- The cost of power consumption
- Energy
- Work
- Power
- Electrostatics
Planet Earth and beyond
- The spheres of the earth - part 1
- The spheres of the earth - part 2
- The lithosphere
- The rock cycle
- Mining of mineral resources
- The atmosphere: An introduction
- The atmosphere: The troposphere
- The atmosphere: The stratosphere
- The atmosphere: The mesosphere
- The atmosphere: The thermosphere
- The atmosphere: The exosphere
- The atmosphere: Global warming
- The birth, life and death of a star