End Of Year Physics

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Across
  1. 1. A method to reduce heat loss
  2. 4. The transfer of energy by electromagnetic waves
  3. 7. A wave emitted from the nucleus with no mass or charge
  4. 8. The number of protons in an atom
  5. 12. The amount of energy needed to raise 1 kg by 1°C
  6. 14. A measure of the average kinetic energy of particles
  7. 15. A force that opposes motion and causes energy dissipation
  8. 16. The change of state from liquid to solid
  9. 18. A type of circuit where components are on separate branches
  10. 19. The time taken for the activity to halve
  11. 20. The central part of the atom
  12. 22. Atoms of the same element with different numbers of neutrons
  13. 25. The process of a nucleus becoming more stable by releasing radiation
  14. 26. A larger unit of power, often used in household appliances
  15. 29. The wire in a plug that carries current to the appliance
  16. 30. The process of removing electrons from atoms
  17. 31. The state of matter with fixed volume but variable shape
  18. 33. A measure of how hard it is for current to flow
  19. 36. The change of state from gas to liquid
  20. 37. A wire connected to the ground to prevent electric shock
  21. 39. A safety device that melts when too much current flows
  22. 41. The natural level of radiation always present
  23. 43. The total energy stored inside a system
  24. 44. A type of current that changes direction
  25. 46. The rate at which energy is transferred or work is done
  26. 47. A positively charged particle in the nucleus
  27. 48. Mass divided by volume
  28. 49. The state of matter with fixed shape and volume
  29. 51. A particle with no charge in the nucleus
Down
  1. 2. A method to reduce unwanted energy transfer
  2. 3. The potential difference across a component
  3. 5. The state of matter that fills any container
  4. 6. The flow of electric charge
  5. 9. The change of state from solid to liquid
  6. 10. The wire that completes the circuit and carries current away
  7. 11. A negatively charged particle found in shells
  8. 13. The ratio of useful energy out to energy in
  9. 17. A process where particles escape from the surface of a liquid
  10. 21. The transfer of heat through a material
  11. 23. The unit of power
  12. 24. The total number of protons and neutrons
  13. 27. The model of the atom proposed by Thomson
  14. 28. A type of circuit where all components are in one loop
  15. 32. A high-energy electron emitted from the nucleus
  16. 34. A device used to measure temperature
  17. 35. The unit of energy
  18. 38. The energy required to change state without changing temperature
  19. 40. The transfer of heat through fluid movement
  20. 42. A property of matter that causes it to experience a force in an electric field
  21. 45. A particle made of 2 protons and 2 neutrons
  22. 50. A type of current that flows in one direction only