Learner resource 1
EM Spectrum
Your task is to research and teach the rest of the class about one group of the electromagnetic
spectrum. In pairs or groups of 3 (your teacher will decide) you will become experts. You will need to
create a way to deliver this to the rest of the class in small groups. Here are some ideas for how you
can present your work:
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Informative poster
PowerPoint presentation
Include a card sort activity
A concept map (as long as you know how to talk about it)
You need to assign one person as the teacher, and one as the learner. The teacher will teach the
rest of the class, while the learner goes to gather information about the other groups of the EM
spectrum. It is then the learner’s job to relay that information back to the teacher. So this is a case of
teamwork! You all have to work together to make sure everyone achieves in this lesson.
There will be a quiz at the end of the lesson to see how much you have learnt from each other.
Your mini-lesson must fulfil the following learning outcomes.
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To give examples of some practical uses of radio/microwave/infrared etc.
Apply the relationship between frequency and wavelength across the EM spectrum.
Describe hazardous effects of radio/microwave/infrared etc.
Some: explain how the use of infrared, X-rays, Gamma ray and ultrasound can be used as
alternatives in medical imaging and exploration.
Extension activity
The EM spectrum can be divided again, into two types of radiation: ionizing and non-ionizing. Use
the information to divide the groups into ionizing and non-ionizing radiation and explain your
decisions. Be sure to include the terms FREQUENCY, WAVELENGTH and ENERGY in your
answer.
I think gamma rays examples of ionizing/non-ionizing radiation because……
OCR Resources: the small print
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use them lies with the individual teacher. Whilst every effort is made to ensure the accuracy of the content, OCR cannot be held responsible for any errors or omissions within these
resources.
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Wave motion and behaviour
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Copyright © OCR 2016