Why Each Type of Wave is Used (HT only)

Cards (25)

  • What type of waves are ideal for long distances signals?
    Radio waves
  • Why are radio waves not absorbed by the air?
    They have long wavelengths
  • What safety hazards do radio waves pose?
    They do not pose significant safety hazards
  • What are microwaves used for?
    Satellite communications
  • How do microwaves differ from radio waves in terms of reflection?
    Microwaves are not reflected by the ionosphere
  • What prevents radio waves from reaching satellites?
    The ionosphere reflects them
  • What are microwaves effective for in cooking?
    Heating food
  • Why can microwaves be absorbed by water molecules?
    Due to their wavelength
  • What type of waves carry heat energy effectively?
    Infrared waves
  • In what applications are infrared waves used?
    Heat detection and thermal imaging
  • What can visible light travel through effectively?
    Glass
  • How does visible light travel through optical fibers?
    By total internal reflection
  • What is the use of ultraviolet waves?
    Sterilization and disinfection
  • What do X-rays penetrate effectively?
    Most solid objects
  • How do gamma rays differ from X-rays in terms of energy?
    Gamma rays carry more energy
  • What is a medical application of gamma rays?
    Killing living cells
  • How can gamma rays be used in medical equipment?
    For sterilizing medical equipment
  • What is a potential use of gamma rays in cancer treatment?
    Targeting tumor cells
  • What do gamma rays do to living cells?
    They can kill them
  • How do gamma rays affect cancer cells?
    They can selectively kill tumor cells
  • What is the relationship between wave type and energy?
    Higher frequency waves carry more energy
  • What is the significance of wave absorption in medical applications?
    It allows targeted treatment of tissues
  • What type of radiation is used in radiation therapy?
    Gamma rays
  • Why are X-rays partially absorbed by dense objects?
    Due to their high density
  • How do different types of waves interact with human tissues?
    They penetrate or are absorbed differently