Across
- 1. Reduction of intensity of a beam due to absorption or scattering
- 3. The energy supplied by a source per unit charge passing through the source, measured in volts.
- 7. Force times distance moved in the direction of the force.
- 8. The product of a force and the perpendicular distance from the line of action to the pivot about which the force is acting.
- 10. The minimum frequency of light needed to cause electrons to be emitted in the photoelectric effect regardless of the intensity.
- 14. A force acting perpendicular to the flow of air or liquid around an object, typically upwards and against the force of gravity.
- 16. State of an object when at rest or uniform motion
- 17. The point on a stationary wave where the incoming and reflected waves are in phase forming a maximum point.
- 18. A resistor which is designed to have a resistance that changes with temperature
- 20. The range of values that could reasonably contain the true value of a measurement, based on the confidence an experimenter has about their result.
- 21. A hypothetical gas that has molecules with no interactions and occupy negligible space so it obeys the ideal gas law.
- 24. The upward force on a body in a fluid due to the pressure in the fluid
- 25. The force that causes flavour change in quarks and leptons, it is responsible for beta decay.
- 26. Rate of energy transfer in a circuit. It can be calculated as the product of the current and the potential difference between two points.
- 28. The number of nuclei of the isotope that disintegrate per second.
- 29. The change of momentum of an object when a force acts on it. Equal to the area underneath a force-time graph.
- 31. The anti-matter counterpart of the electron.
- 32. This person’s law says that as volume decreases the pressure on a gas at a constant temperature increases
- 33. The maximum speed reached by an object when the drag force on it is equal and opposite to the force causing the motion of the object.(2 words)
- 37. This law says that the direction of an induced current is such that it opposes the current that created it.
- 38. When an electron is removed from an atom giving the atom a positive charge.
- 40. How close a set of repeated measurements are to one another but not the true Value
- 41. A physical quantity with magnitude only.
- 42. A material that can withstand large plastic deformation without breaking.
- 43. A force felt towards the centre of an object's orbit due to the centripetal acceleration.
- 46. The total power radiated by a light-emitting source.
- 47. Distance between two adjacent wave peaks.
- 48. A center-reading electrical meter used to detect and measure an electric current.
- 49. The amount of work done in moving a unit mass from an infinite distance to that point. (2 words)
Down
- 2. Describes the rate of charge or discharge of a capacitor (2 words)
- 4. A wave that transfers energy from one point to another.
- 5. A physical quantity with magnitude and direction.
- 6. Materials that change their resistance depending on external conditions.
- 9. A measure of how difficult it is for charge to travel through a material, depending on the material’s cross sectional area, length and resistance.
- 11. Force per unit area acting on a surface perpendicular to the surface.
- 12. When the energy in a SHM system is not kept as KE or PE and the total energy is no longer constant.
- 13. Change of velocity per unit time
- 15. A quantity measuring the internal friction of a fluid, it acts to reduce the flow of a fluid. It is temperature dependent.
- 19. The effect of two waves adding together when they meet.
- 22. Positive terminal of an electrical device
- 23. This person’s law says that the peak wavelength of emitted radiation is inversely proportional to the absolute temperature of the black body.
- 27. The force of gravity acting on an object.
- 28. Maximum displacement of a vibrating particle.
- 30. When the driving force is at the natural frequency of a system causing maximal energy transfer with the amplitude of oscillation at its maximum.
- 34. A particle consisting of one quark and one antiquark.
- 35. How close a measurement is to its true value, influenced by the systematic and random errors of that measurement.
- 36. Sound waves at frequencies above the range of the human ear.
- 39. An optical instrument used to measure the wavelengths of lines in a spectrum.
- 44. Distance in a given direction.
- 45. A particle consisting of three quarks,