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Science
14 sections available · 93 chapters available
Free Science study notes for Junior Secondary students. Each chapter breaks down a key concept with examples and practice prompts you can turn into AI drills in the thinka app.
Unit 1 Scientific Practices I
Learning about science
Laboratory equipment and basic practical skills
Accuracy, precision and measurement errors
Safety in the laboratory
Unit 2 Looking at Living Things
Living things
Grouping of living things
Life cycles of animals
Cells - the basic units of living things
Levels of organisation in organisms
Unit 3 Human Reproduction and Heredity
Human reproduction
Chromosomes and DNA
Heredity and variation
Unit 4 Scientific Practices II
Practice of science
Hypotheses, variables and controlled experiments
Scientific reasoning and models
Unit 5 Earth and Space
Space exploration and the Solar System
The Earth's structure, atmosphere and water
The water cycle
Water purification
Further treatment of drinking water
Water conservation and pollution
Energy sources
Unit 6 Living Things and the Environment
Photosynthesis
Respiration
Ecosystems and food webs
Biodiversity
Balance of carbon dioxide and oxygen
Climate change
Unit 7 Matter and Energy
Particle theory
Particle model for the three states of matter
Dissolving
Thermal expansion and contraction
Density
Changes of state
Energy changes
Heat transfer
Unit 8 Atomic World
Atoms and elements
Mixtures and compounds
Physical and chemical changes
Dissolving
Concentration and solubility
Common acids and alkalis
Measuring pH for acids and alkalis
Neutralisation
Corrosive nature of acids
Potential hazards related to the use of acids and alkalis
Chemical reactions
Unit 9 Force and Motion
Motion
Force
Gravity
Friction and air resistance
Action and reaction
Balanced and unbalanced forces
Pressure
Gas pressure
Unit 10 Making Use of Electricity
Simple circuit
Current, voltage and resistance
Electrical circuits
Magnets and electromagnets
Household electricity
Energy saving
Unit 11 Healthy Body
Nutrition and health
Dental care
Effects of drugs and alcohol
Gas exchange in plants and animals
Effects of smoking
Digestion and absorption of food
Balanced and unbalanced diets
Keeping our bodies healthy
Health and diseases
Unit 12 Light and Sound
Light rays from an object
Reflection
Refraction
Total internal reflection
Senses and sense organs
Sight
Hearing
Properties of sound
Images formed by convex lenses
Images formed by concave lenses
Electromagnetic spectrum
Sound and the environment
Unit 13 Our Planet Earth
Air
The carbon cycle and gases from air
Air quality
The ocean and sea water
Metals
Rocks and minerals
Periodic Table
Materials of the modern world
Other topics (2017 curriculum)
Smell and taste
Other senses
Space flight
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