Year 9 Science revision - Semester 2

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Across
  1. 2. Lives on or in a host and harms it.
  2. 3. A cell that transmits electrical signals in the nervous system.
  3. 4. One end of a magnet that attracts the south pole.
  4. 6. Nerves outside the brain and spinal cord.
  5. 9. Region where a force like magnetism acts.
  6. 13. Able to spread from one organism to another.
  7. 17. Network of nerves in the digestive system.
  8. 18. The way a disease spreads.
  9. 19. Nervous system controlling voluntary movements.
  10. 20. Infectious protein that can cause brain diseases.
  11. 21. Related to magnets or magnetism.
  12. 25. Substances like stomach acid that kill microbes.
  13. 26. An organism that carries and spreads pathogens.
  14. 28. The opposite end of a magnet to north.
  15. 31. Something that blocks pathogens from entering.
  16. 33. Related to microorganisms.
  17. 34. Wire wound in a loop or spiral.
  18. 37. Coil of wire that creates a magnetic field when current flows.
  19. 38. Area around a magnet where magnetic forces act.
  20. 39. Passed down through DNA from parents.
  21. 40. Type of barrier like skin that protects against pathogens.
  22. 41. Nerves that carry information from the body to the brain.
  23. 43. Division of the autonomic system that prepares the body for action.
  24. 45. A condition that disrupts normal body function.
  25. 46. Disease outbreak across countries or continents.
  26. 47. Nerves that send signals from the brain to muscles.
  27. 48. The body’s ability to resist infection.
  28. 49. Made up of more than one cell.
Down
  1. 1. Injection that helps build immunity.
  2. 5. The ability to maintain a stable internal environment.
  3. 7. Cells that fight infections.
  4. 8. A magnet created by an electric current.
  5. 10. Nervous system controlling involuntary actions like heartbeat.
  6. 11. A microorganism that causes disease.
  7. 12. Groups of organs working together for a common function.
  8. 14. Tool that uses Earth’s magnetic field to show direction.
  9. 15. Organisms like moulds and yeasts, some cause infections.
  10. 16. When cells develop specific roles in a multicellular organism.
  11. 20. The ends of a magnet where the force is strongest.
  12. 22. Sudden outbreak of disease in a community.
  13. 23. A system response that helps regulate processes, often positive or negative.
  14. 24. The process of different body parts working together smoothly.
  15. 25. Flow of electric charge through a conductor.
  16. 27. Tinfectious agent that needs a host cell to reproduce.
  17. 29. Practices that prevent disease spread.
  18. 30. Division that calms the body after stress.
  19. 32. Material inside a coil that strengthens an electromagnet.
  20. 35. Capable of causing disease.
  21. 36. Disease regularly found in a certain area.
  22. 42. Single-celled organisms, some cause illness.
  23. 44. Part of the nervous system that includes the brain and spinal cord.