Are electromagnetic waves transverse or longitudinal?

Electromagnetic waves are transverse.

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What is the key property of a transverse wave?

Transverse waves oscillate perpendicular to the direction of energy transfer.

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How fast do electromagnetic waves travel when in a vacuum?

3 x 108 m/s

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What are the 7 types of waves in the electromagnetic spectrum, starting with the longest?

  1. Radio waves
  2. Microwaves
  3. Infrared
  4. Visible light
  5. Ultra violet
  6. X-rays
  7. Gamma rays

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Which 2 types of electromagnetic waves are considered ionising?

  1. Gamma rays



  1. X-rays 


(and some types of ultraviolet radiation)

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Which 2 types of electromagnetic waves can be used in communication?

  1. Radio waves


  1. Microwaves


(and sometimes infrared radiation).

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Which type of electromagnetic wave has the highest frequency?

Gamma rays

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Which type of electromagnetic wave has the highest energy?

Gamma rays

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