Electromagnetic Waves

    Cards (9)

    • Electromagnetic waves are transverse waves.
    • All electromagnetic waves transfer energy as radiation from the sources of the waves to an absorber. can travel through a vacuum e.g space.
    • Radio waves: Transmitted easily through the air. e.g TV and radio
    • Microwaves: Intense sources can be dangerous. e.g cooking food, bluetooth and satalite communications.
    • Infared: Heating effect can cause burns. e.g electric heaters, cookers and remote controls.
    • Visible light: Contains limited ranger of frequencies that can be seen.
      e.g photography
      • Red light has the lowest frequency
      • Violet light has the highest frequency
    • X-rays and gamma rays: Gamma rays-kill cells in the body. e.g medical use.
    • Ultraviolet radiation:
      • Kill bacteria in water
      • helps skin make vitamin D
      • too much exposure can cause skin issues.
    • Electromagnetic Wave
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