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L6

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Published in: Technology, Business

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Transcript

  • 1. True or false? When you make Readybrek in a microwave, it heats up the bowl.
  • 2. True or false? In fact it’s false. The microwaves heat up the food inside the bowl – not the bowl itself. Don’t believe me – you will.
  • 3. Lesson 6 What’s cooking
  • 4. You will be successful if you can:
    • Describe how microwaves heat up some materials
    • Explain why microwave radiation doesn’t heat up other materials
    • Describe how microwaves are designed to prevent radiation from cooking you!  
    • Explain how the intensity and duration of exposure to non-ionising radiation determines its heating effect
  • 5. Think about the following questions Are there things that you cannot put in microwave ovens? How do microwaves work? Why do microwaves not heat up the particles in glass and your cereal bowl?