Year 7 Science Revision

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Across
  1. 4. Divides Earth’s history into eons, eras, and periods.
  2. 9. The process plants use to make their own food.
  3. 11. Large pieces of Earth's crust that move and interact.
  4. 14. Includes all the water on Earth.
  5. 17. The process driving evolution through survival of the fittest.
  6. 19. How oxygen enters the blood from the lungs.
  7. 21. Evidence of ancient life forms found in rock.
  8. 23. Evidence for evolution showing similarities in body structures.
  9. 24. The control center of a cell.
  10. 25. The basic units of life.
Down
  1. 1. The process that releases energy in cells.
  2. 2. The region around a star where planets can support life.
  3. 3. A natural satellite orbiting a planet.
  4. 5. The study of embryo development across species.
  5. 6. The organelle where photosynthesis occurs.
  6. 7. The process of water moving through Earth's systems.
  7. 8. Features inherited from ancestors but no longer useful.
  8. 10. Produces energy in a cell.
  9. 12. The process that wears down rocks and landforms.
  10. 13. Tiny structures in the lungs where gas exchange occurs.
  11. 15. A part of the water cycle requiring the Sun's energy.
  12. 16. When one tectonic plate sinks beneath another.
  13. 18. The layer of Earth that generates the magnetic field.
  14. 20. Protects the body from infections.
  15. 22. Caused by the Earth's tilt.