A Level Physics Definitions

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485
Across
  1. 3. rate of change of velocity
  2. 5. force per unit cross sectional area
  3. 8. rate of change of angular displacement
  4. 10. a quantity with magnitude and direction
  5. 12. transfer of energy without transfer of matter
  6. 13. minimum frequency required for emission
  7. 15. property of matter causing electrical interaction
  8. 18. number of oscillations per second
  9. 21. product of field strength and area
  10. 25. neutral particle in nucleus
  11. 26. addition of overlapping wave displacements
  12. 27. force per unit mass or charge
  13. 30. resultant force directed towards centre of circular motion
  14. 34. permanent deformation after stress removal
  15. 35. pulling force transmitted through a string or rope
  16. 40. a standard used to measure a physical quantity
  17. 41. capacity to do work
  18. 43. state where resultant force is zero
  19. 46. large amplitude oscillation at natural frequency
  20. 47. quantum of electromagnetic radiation
  21. 48. interaction that causes change in motion
  22. 49. ratio of potential difference to current
  23. 50. rate of change of distance
  24. 53. work done per unit charge
  25. 54. fractional change in length
  26. 56. maximum displacement from equilibrium
  27. 58. discrete packet of energy
  28. 61. number of nuclear decays per second
  29. 62. closeness of a measurement to the true value
  30. 63. reciprocal of resistance
  31. 64. ratio of stress to strain
  32. 65. energy supplied per unit charge
  33. 71. spreading of waves through gaps
  34. 72. energy due to position in a field
  35. 75. ability to return to original shape after deformation
  36. 76. rate of change of displacement
  37. 78. negatively charged particle outside nucleus
  38. 79. ratio of useful output to total input
  39. 81. position within a wave cycle
  40. 82. squeezing force acting to shorten an object
  41. 83. reduction of amplitude due to energy loss
  42. 84. energy required to separate nucleus into nucleons
  43. 85. superposition producing reinforcement and cancellation
Down
  1. 1. region where a force acts
  2. 2. change in direction at a boundary
  3. 4. curved path of an object under gravity
  4. 6. a quantity with magnitude only
  5. 7. attractive force between masses
  6. 9. distance between points in phase
  7. 11. time for activity or nuclei number to halve
  8. 14. repeated motion about equilibrium
  9. 16. power per unit area
  10. 17. state with zero velocity and zero resultant force
  11. 19. rate of flow of electric charge
  12. 20. energy transferred by a force through a distance
  13. 22. support force exerted by a surface
  14. 23. resistive force opposing motion
  15. 24. total path length travelled
  16. 28. production of emf by changing magnetic flux
  17. 29. charge stored per unit potential difference
  18. 31. force per unit area
  19. 32. atoms with same proton number but different nucleon number
  20. 33. duration of an event
  21. 36. measure of disorder in a system
  22. 37. proton or neutron in nucleus
  23. 38. time for one complete oscillation
  24. 39. resistance to change in motion
  25. 42. mass per unit volume
  26. 44. force per unit area from gas particle collisions
  27. 45. property describing resistance of a material
  28. 51. the degree of repeatability of measurements
  29. 52. a measurable property expressed with magnitude and unit
  30. 55. energy transferred due to temperature difference
  31. 57. the difference between measured value and true value
  32. 59. an estimate of the range within which the true value lies
  33. 60. product of mass and velocity
  34. 66. change in position in a stated direction
  35. 67. restriction of oscillations to one plane
  36. 68. spontaneous emission from unstable nucleus
  37. 69. gravitational force acting on a mass
  38. 70. change in direction due to speed change
  39. 73. measure of average kinetic energy of particles
  40. 74. positively charged particle in nucleus
  41. 77. change in momentum
  42. 80. measure of inertia of a body
  43. 81. rate of doing work