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C/W 13 th October 2011 Recap - Electromagnetic radiation PowerPoint Presentation
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C/W 13 th October 2011 Recap - Electromagnetic radiation

C/W 13 th October 2011 Recap - Electromagnetic radiation

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C/W 13 th October 2011 Recap - Electromagnetic radiation

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  1. C/W 13th October 2011 Recap - Electromagnetic radiation Keywords: electromagnetic spectrum photon transmit transparent absorb translucent vacuum Objectives: Must – Describe what the electromagnetic spectrum is. Should – Describe how electromagnetic waves behave. Could – Electromagnetic waves of different frequency carry different amounts of energy.

  2. homework

  3. Radio Micro Infra-Red Light Ultra-Violet X rays Gamma Electromagnetic Spectrum Wavelength () increases Gate XUsually Lets In Most Radiation Can you think of a phrase that would help you remember this order? Low frequency Long wavelength Low energy Least penetrating High frequency Short wavelength High energy Most penetrating x High frequency Short wavelength High energy Most penetrating Low frequency Long wavelength Low energy Least penetrating

  4. Gamma waves – the highest energy

  5. X-rays

  6. Ultra-violet waves

  7. Visible light

  8. Infra red

  9. microwaves

  10. Radio waves

  11. Starter – emag wave catch phrase.

  12. C/W 18th October 2011 Recap - Radiation intensity Keywords: intensity, photon, energy transfer. Objectives: Must – Understand how energy is transferred by electromagnetic waves. Should – Understand what radiation intensity is. Could – Understand what things effect intensity

  13. C/W 20thOctober 2011 Ionisation Keywords: ionising radiation Objectives: Must – Understand what ionising radiation is Should – understand how ionisation occurs Could – Understand that ionisation can course damage to living cells.

  14. Ionisation

  15. Role play......... Describe in 3 steps what is happening.... Use the words, electron, ionisation, high energy photon Before the photon gets there As it arrives After it has collided

  16. Questions 1 and 2 page 240

  17. Ionisation happens with high energy photons...... Ie x-rays or gamma rays.....you cant just add the energy of lots of infra red rays for example.

  18. Why is ionisation harmful? If this happens in your cells it can damage your DNA. This can cause cancers......

  19. Question 3-4 Extension 5-6

  20. C/W 18th October 2011 Ionisation Keywords: ionising radiation Objectives: Must – Understand what ionising radiation is Should – understand how ionisation occurs Could – Understand that ionisation can course damage to living cells.