Waves

HideShow resource information
View mindmap
  • Waves
    • the nature of waves
      • transverse
        • vibrate at right angles to direction of energy transfer
        • electromagnetic waves
      • longitudinal
        • vibrate parallel to the direction of energy transfer
        • sound
      • Mechanical waves
        • need a medium to travel through
        • can be transverse or longitudinal
    • Measuring waves
      • amplitude = height
      • frequency = number of
      • wavelength = distance from one wave crest to the next
      • wave speed = frequency x wavelength
    • reflection
      • normal
        • perpendicular to mirrow
        • angle of incidence = angle of reflection
    • refraction
      • change of direction of waves when they travel across a boundary
      • air into glass = towards the normal
    • Diffraction
      • spreading out of waves when they pass through a gap
      • narrower gap = bigger diffraction
      • radio waves do not diffract enough when they go over hills
        • poor TV reception
    • sound
      • humans can hear 20 - 20000Hz
      • cannot travel through a vacuum
      • echoes = reflected sound waves
      • high pitch = high frequency

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Waves and Sound resources »