Year 8 Science

Biology

  • Explain the importance of a balanced diet including the impact of deficiencies.
  • Explain the roles and adaptations of digestive organs in the digestion and absorption of food.
  • Explain the structure of plant organs and explain the adaptations plants have for pollination, fertilisation, dispersal, germination and plant growth including photosynthesis.
  • Explain the importance of aerobic and anaerobic respiration in animals and plants and explain how the gas exchange system in humans can be affected by exercise and smoking.
  • Explain the function of unicellular organisms in food production and maintaining a stable ecosystem.
  • Describe the key components of unicellular organisms and how they reproduce.

Chemistry

  • Explain the products of combustion reactions and how to effectively reduce risks.
  • Explain the effects of combustion reactions on the atmosphere and how these effects can be reduced.
  • Explain how the different rock types are formed linked to texture, crystal size and degree of sorting and the rock cycle.
  • Describe how metals are extracted from their ores.
  • Name compounds formed between metals and non-metals in chemical reactions and explain the impact of catalysts on the rates of chemical reactions.
  • Explain how impurities in substances effect their melting, freezing and boiling points.

Physics

  • Use the particle model to explain how heat can be transferred and draw Sankey diagrams.
  • Explain that light travels from a source as a transverse wave and how it is affected by mirrors, filters, lenses and prisms.
  • Explain how fluid pressure changes and state what is meant by density.
  • Describe the relative positions of the planets and how this is responsible for the changing seasons, day and night and phases of the moon as well as the relative sizes of celestial bodies outside the solar system.