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169 to 192 of 274 topics

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  • Science // Matter & Materials

    Finite Resources & Recycling

    Explain that many raw materials (metals, fossil fuels, minerals) are finite resources, describe the environmental costs of extraction, and evaluate the benefits…

    Ages 12 to 14Concept
  • Science // Matter & Materials

    Earth's Atmosphere & CO2

    Describe the composition of Earth's atmosphere (mainly nitrogen and oxygen, with small amounts of CO₂ and other gases), explain how human activity increases…

    Ages 12 to 14Concept
  • Science // Matter & Materials

    Acid Reactions & Salts

    Describe and write word equations for the reactions of acids with metals, alkalis (neutralisation), and metal oxides/hydroxides, identifying the salt produced…

    Ages 12 to 13Concept
  • Science // Matter & Materials

    Acids, Alkalis & pH

    Define acids and alkalis in terms of hydrogen ion concentration, describe the pH scale (0–14), and explain how indicators are used to identify and measure…

    Ages 12 to 13Concept
  • Science // Matter & Materials

    Reactions That Release or Absorb Heat

    Distinguish between exothermic reactions (release energy, temperature rises) and endothermic reactions (absorb energy, temperature falls), with everyday and…

    Ages 12 to 13Concept
  • Science // Matter & Materials

    The Rock Cycle

    Explain the rock cycle: how igneous rocks form from magma, sedimentary rocks from compressed sediment, and metamorphic rocks from heat and pressure, and how all…

    Ages 12 to 14Concept
  • Science // Matter & Materials

    Types of Chemical Reaction

    Identify and describe four types of chemical reaction: combustion (burning in oxygen), oxidation (gain of oxygen), thermal decomposition (breaking down by…

    Ages 12 to 13Concept
  • Science // Matter & Materials

    The Reactivity Series

    Order common metals in the reactivity series and explain how a more reactive metal displaces a less reactive one; describe how carbon is used to extract metals…

    Ages 12 to 14Concept
  • Science // Matter & Materials

    Ceramics, Polymers & Composites

    Describe the properties and uses of ceramics (hard, brittle, heat-resistant), polymers (flexible, lightweight, variable), and composites (combine properties of…

    Ages 13 to 14Concept
  • Science // Ocean Life

    Ocean Currents and Global Heat

    Explain thermohaline circulation (the global conveyor belt) as driven by temperature and salinity differences that cause dense water to sink; describe how the…

    Ages 11 to 12Concept
  • Science // Ocean Life

    Deep-Sea Life Without Sunlight

    Contrast photosynthesis (energy from sunlight) with chemosynthesis (energy from oxidising chemicals like hydrogen sulphide); describe hydrothermal vent…

    Ages 11 to 13Concept
  • Science // Ocean Life

    Coral Bleaching & Acidification

    Explain the mutualistic symbiosis between coral polyps and photosynthetic zooxanthellae; describe how heat stress causes bleaching (corals expel zooxanthellae…

    Ages 12 to 13Concept
  • Science // Ocean Life

    Predator Loss and Ecosystem Effects

    Quantify energy transfer efficiency through trophic levels (~10% rule); explain trophic cascades: how removing an apex predator triggers a chain of ecosystem…

    Ages 12 to 14Concept
  • Science // Ocean Life

    Deep-Ocean Exploration Technology

    Explain how crewed submersibles (Alvin, Deepsea Challenger) and remotely operated vehicles (ROVs) allow exploration of the deep; describe acoustic seafloor…

    Ages 13 to 14Concept
  • Science // Organisms & Life Processes

    Cells Under the Microscope

    Understand that all living organisms are made of cells and use a light microscope to observe, interpret, and record cell structure

    Ages 11 to 12Concept
  • Science // Organisms & Life Processes

    Parts of Plant and Animal Cells

    Describe the functions of the main components of plant and animal cells: cell wall, cell membrane, cytoplasm, nucleus, vacuole, mitochondria, ribosomes, and…

    Ages 11 to 12Concept
  • Science // Organisms & Life Processes

    Photosynthesis

    Explain photosynthesis as the process by which plants use light energy to convert carbon dioxide and water into glucose and oxygen, and describe how mineral…

    Ages 11 to 12Concept
  • Science // Organisms & Life Processes

    Plant Cells vs Animal Cells

    Compare plant and animal cells, identifying shared features and structures unique to plant cells (cell wall, vacuole, chloroplasts)

    Ages 11 to 12Concept
  • Science // Organisms & Life Processes

    Cells to Organ Systems

    Describe the hierarchical organisation of multicellular organisms: cells → tissues → organs → organ systems → organism

    Ages 11 to 12Concept
  • Science // Organisms & Life Processes

    Digestion & Enzymes

    Describe the organs of the human digestive system and how food is physically and chemically digested, including the role of enzymes as biological catalysts

    Ages 11 to 13Concept
  • Science // Organisms & Life Processes

    Joints, Tendons & Ligaments

    Explain biomechanics — the interaction between skeleton and muscles at joints, including the roles of tendons (attach muscle to bone) and ligaments (attach bone…

    Ages 11 to 13Concept
  • Science // Organisms & Life Processes

    Muscles Work in Pairs

    Explain that muscles work in antagonistic pairs — one contracts while the other relaxes — to produce movement, using the bicep and tricep as a key example

    Ages 11 to 13Concept
  • Science // Organisms & Life Processes

    Nutrients in a Healthy Diet

    Identify the seven components of a healthy diet — carbohydrates, lipids, proteins, vitamins, minerals, dietary fibre, and water — and explain the role of each…

    Ages 11 to 13Concept
  • Science // Organisms & Life Processes

    The Human Skeleton

    Describe the structure and four main functions of the human skeleton: support, protection, movement, and production of blood cells in bone marrow

    Ages 11 to 13Concept