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Physics

GCSE · Edexcel

QuestionsFlashcards

Expressing Quantities & SI Units
- Units & Prefixes
  6
- Conversions & Standard Form
  6

Dangers of High-Energy EM Waves Flashcards

All 6 cards in this deck

How does the potential danger of an electromagnetic wave change across the spectrum?: It increases with increasing frequency (so gamma rays are the most dangerous, radio waves the least).
What is the harmful effect of excessive exposure to microwaves?: Internal heating of body cells.
What is the harmful effect of excessive exposure to infrared radiation?: Skin burns.
What is the harmful effect of excessive exposure to ultraviolet radiation?: Damage to surface cells and to the eyes, leading to skin cancer and eye conditions such as cataracts.
What is the harmful effect of excessive exposure to x-rays and gamma rays?: Mutation or damage to cells in the body.
True or false? The potential danger of an EM wave increases as its velocity increases.: False. All EM waves travel at the same speed; the danger increases with increasing frequency.