Physics Terms -1

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Across
  1. 2. A scalar quantity, speed = distance / time
  2. 5. The unit of potential difference (p.d.) or electromotive force (e.m.f.)
  3. 7. The maximum displacement of a wave from its rest/mean position
  4. 9. = force x perpendicular distance from the pivot to the line of action of the force
  5. 11. The rate of change of displacement with respect to time
  6. 12. The acceleration of a body falling under gravity (9.81ms-2 on earth)
  7. 16. A physical quantity, measured in cubic metres(m3)
  8. 18. The work done in moving a unit positive charge from one point to the other.
  9. 19. The SI unit of work done, or energy, when a force of one newton moves an object one metre.
  10. 21. A type of force due to an engine (usually forward force).
  11. 23. A force experienced due to the pressure difference of the fluid at the top and bottom.
  12. 24. A device used to measure the potential difference , connected in parallel.
  13. 27. The (instantaneous) rate of change of velocity in respects to time
  14. 29. Density is the mass of a body per unit volume
  15. 32. The number of waves that pass a fixed point in a unit of time
  16. 33. The unit of power , = energy / time
  17. 34. A device used to measure the electric current in a circuit, connected in series.
  18. 35. The rate at which work is done.
Down
  1. 1. A quantity with magnitude and direction.
  2. 3. A vector quantity, the distance of an object from its initial position in a direction
  3. 4. When resistive forces = driving force, acc = 0, so it cannot travel any faster.
  4. 6. A SI quantity, measured in kelvin (K).
  5. 8. Zero on the thermodynamic temperature scale, equal to -273.15 degrees Celsius
  6. 10. An electrical component that changes its resistance depending on its temperature.
  7. 13. Two equal, opposite and parallel forces which create rotational force.
  8. 14. The energy an object possesses due to its motion, given by KE = 0.5 x m x v²
  9. 15. The property of a material that measures it resistance to electric current.
  10. 17. A form of electromagnetic wave . It may cause sun tanning.
  11. 20. The energy transferred when an object is moved through a distance by a force.
  12. 22. The load applied to an object per unit surface area.
  13. 25. The gravitational force acting on a body, measured in newtons (N).
  14. 26. The stored ability to do work
  15. 28. A quantity with magnitude but no direction.
  16. 30. The time taken for one complete oscillation. Denoted by 'T'. T=1/f
  17. 31. Unit in which force is measured. Symbol "N".