P2.4 Keywords

P254
  1. Frequency (4) - P2:4
    • the number of wave cycles passing a point per unit time
  2. Wavelength (3) - P2:3
    • family of waves with similar properties
  3. waves (3) - P2:3
    • transfer energy but not matter
  4. Waves (2) - P2:2
    • Transfer energy, not matter.
  5. Absorb (2) - P2:2
    • take in or soak up energy or a liquid or other substance.
  6. Boundary (2) - P2:2
    • the point where two mediums meet
  7. Amplitude (2) - P2:2
    • the vertical distance between a peak or a valley and the equilibrium point.
  8. Hertz (2) - P2:2
    • unit for frequency
  9. Reflect (2) - P2:2
    • when waves bounce back off a shiny surface
  10. Use this as the enquiry question ahead of the homemade Leslie cube demo (1) - P2:1
  11. Electromagnetic (1) - P2:1
  12. Electromagnetic (1) - P2:1
  13. Compression (1) - P2:1
    • A compression is a region in a longitudinal wave where the particles are closest together.
  14. Rarefaction (1) - P2:1
    • A rarefaction is a region in a longitudinal wave where the particles are furthest apart.
  15. Diffused reflection (1) - P2:1
    • A rough surface will produce diffused reflection with scattered reflection of the waves.
  16. Circuits (1) - P2:1
    • An electric circuit is a path in which electrons from a voltage or current source flow
  17. Ultrasound (1) - P2:1
    • Electromagnetic wave
  18. longitudinal (1) - P2:1
    • In longitudinal waves, the oscillations are along the same direction as the direction of travel and energy
  19. Longitudinal (1) - P2:1
    • In longitudinal waves, the oscillations are along the same direction as the direction of travel and energy transfer.
  20. transverse (1) - P2:1
    • In transverse waves, the oscillations (vibrations) are at right angles to the direction of travel and energy transfer.
  21. Transverse (1) - P2:1
    • In transverse waves, the oscillations (vibrations) are at right angles to the direction of travel and energy transfer.
  22. Detector (1) - P2:1
    • a device or instrument designed to detect the presence of a particular object or substance.
  23. Displacement (1) - P2:1
    • a measurement of distance of the movement of a particle from its equilibrium position in a medium as it transmits a second wave
  24. Emitter (1) - P2:1
    • a substance that will transfer energy to its surroundings
  25. Earthquakes (1) - P2:1
    • a sudden violent shaking of the ground
  26. absorber (1) - P2:1
    • a thing or person that soaks up or absorbs something
  27. X-ray (1) - P2:1
    • a type of ionising radiation
  28. Velocity (1) - P2:1
    • a vector that includes speed and a direction
  29. Electrical (1) - P2:1
    • energy transfer
  30. Magnification (1) - P2:1
    • enlarging an image
  31. source (1) - P2:1
    • from which something originates or can be obtained
  32. Wave (1) - P2:1
    • how energy is transferred from A to B
  33. reflection (1) - P2:1
    • light bounces back from a smooth surface
  34. P-waves (1) - P2:1
    • longitudinal seismic waves
  35. Sound waves (1) - P2:1
    • longitudinal wave
  36. Transmit (1) - P2:1
    • move from one place to another
  37. Oscillation (1) - P2:1
    • one complete cycle of a wave
  38. Vibrations (1) - P2:1
    • ossification around a fixed point
  39. transmitted (1) - P2:1
    • pass from one place to another
  40. boundary (1) - P2:1
    • point where two materials of different density meet
  41. Interface (1) - P2:1
    • point where two mediums meet and interact
  42. Focus (1) - P2:1
    • producing clear visual definition
  43. Ionising (1) - P2:1
    • radiation that carries enough energy to remove electrons from atoms
  44. Mutations (1) - P2:1
    • random changes to DNA
  45. Specular reflection (1) - P2:1
    • reflection are that the wave bounces back at the same angle if the surface is smooth
  46. spectrum (1) - P2:1
    • the entire range of wavelengths of electromagnetic radiation
  47. Gamma (1) - P2:1
    • the most ionising electromagnetic wave
  48. Wave speed (1) - P2:1
    • the speed at which a wave travels
  49. Period (1) - P2:1
    • the time needed for one complete cycle of vibration to pass in a given point.
  50. Radiate (1) - P2:1
    • transfer of energy to the surroundings
  51. Seismic (1) - P2:1
    • waves produced by earthquakes
  52. S-waves (1) - P2:1
    • waves that cannot travel through a liquid
  53. Refraction (1) - P2:1
    • when a wave passes through a medium with different density it speeds up or slows down
  54. Refract (1) - P2:1
    • when waves change speed when they move from one medium to another of different density