Difference between revisions of "4-WAV-04a"

From MrReid.org Wiki
Jump to: navigation, search
(Specification References)
(Main Body of Lesson)
Line 9: Line 9:
  
 
==Main Body of Lesson==
 
==Main Body of Lesson==
* Assign each group of pupils two sections of the EM spectrum, pupils should find the uses of one section and the dangers of another (AGR has hand-out cards for pupils).
+
* Go through EM circus with group, AGR ppt contains nice pictures to talk about.
 +
*Assign each group of pupils two sections of the EM spectrum, pupils should find the uses of one section and the dangers of another (AGR has hand-out cards for pupils).
 
* Pupils present uses and dangers to the class.
 
* Pupils present uses and dangers to the class.
 
* During talks pupils should make rough notes, which will then be made into neat notes for homework.
 
* During talks pupils should make rough notes, which will then be made into neat notes for homework.
 +
* Alternatively go through the following with the group:
 +
====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==
 
==Plenary==

Revision as of 10:21, 31 October 2010

Outcomes

  • Pupils can identify the sections of the electromagnetic spectrum.
  • Pupils can identify the uses and dangers of sections of the electromagnetic spectrum.

Specification References

  • 3.9, 3.10, 3.11, 3.12

Starter

Main Body of Lesson

  • Go through EM circus with group, AGR ppt contains nice pictures to talk about.
  • Assign each group of pupils two sections of the EM spectrum, pupils should find the uses of one section and the dangers of another (AGR has hand-out cards for pupils).
  • Pupils present uses and dangers to the class.
  • During talks pupils should make rough notes, which will then be made into neat notes for homework.
  • Alternatively go through the following with the group:

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

  • Use Jodrell Bank's Chromoscope to explore the sky in different parts of the spectrum.

Homework

  • Using rough notes created in class, combined with textbook/internet, pupils create neat notes on uses/dangers of each section of the EM spectrum.

Additional Information

Resources Required

Textbook References

  • Pople 7.11 pp. 160-163

Website References

Skills Addressed

Safety/Hazards

Notes