Across
- 2. subatomic particle made of 3 quarks
- 4. name of a number
- 7. use your left hand
- 9. causes objects to float
- 11. instrument to measure height
- 13. it does not change
- 14. 745.7 watts
- 17. towards the centre
- 18. depends on the square of the amplitude
- 19. balanced forces
- 22. base units
- 25. output to input
- 27. ten to the nine
- 28. for measuring air pressure
- 30. unit of radioactivity
- 32. suspension of particles of liquid in a gas
- 33. detects small electric currents
- 34. it has similar atoms
- 36. a charged atom
- 37. heat is taken in
- 39. without an echo
- 40. kelvin minus 273
- 42. flow of charge
- 43. ask Newton
Down
- 1. unit of luminosity
- 3. unit of charge
- 5. an isotope of hydrogen
- 6. number of waves per second
- 7. splitting of an atom
- 8. force times time
- 10. liquid to gas below the boiling point
- 12. positive terminal of a cell
- 15. overtone
- 16. rate of change of velocity
- 20. two waves together
- 21. unit of sound intensity
- 23. spreading out of waves
- 24. science of sound
- 26. the ability to do work
- 29. moving part of an electric motor
- 31. electromotive force
- 32. attraction between different substances
- 35. breakdown through radioactivity
- 38. stores electric charge
- 41. earth-moon-sun