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