Difference between revisions of "4-WAV-04"
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==Starter== | ==Starter== | ||
==Main Body of Lesson== | ==Main Body of Lesson== | ||
+ | * Use EM spectrum circus to demonstrate uses and dangers of EM spectrum; AGR has accompanying slides. | ||
====Uses==== | ====Uses==== | ||
* Radio - communication | * Radio - communication |
Latest revision as of 10:54, 29 August 2009
Contents
Outcomes
- Pupils can recall the different sections of the electromagnetic spectrum in order.
- Pupils can recall and explain the uses and dangers of each section of the EM spectrum.
Specification References
Starter
Main Body of Lesson
- Use EM spectrum circus to demonstrate uses and dangers of EM spectrum; AGR has accompanying slides.
Uses
- Radio - communication
- Microwave - communication, energy transfer (e.g. microwave oven, solar satellite)
- Infrared - thermal energy transfer, night vision
- Visible
- Ultraviolet - sterilisation, tanning,
- X-ray - medical (diagnosis), x-ray diffraction (crystallography)
- Gamma ray - sterilisation, medical (treatment)
Dangers
- Radio - negligible hazard
- Microwave - negligible hazard, internal heating
- Infrared - surface heating
- Visible
- Ultraviolet - blindness, sunburn
- X-ray - blindness, cancers (mutation)
- Gamma ray - blindness, cancers (mutation)
Plenary
Homework
Additional Information
Resources Required
- EM spectrum circus