Electromagnetic spectrum cards
July 25, 2018
Here are a set of cards to print out on the different parts of the electromagnetic spectrum.
How to use
Print (better on thick paper if you have it)
Separate into 2 piles
1. the 7 parts of the E-M spectrum
2. all the different uses of each part (some are duplicated deliberately, because some things can be done by more than one part)
Our memory works best if we see a pattern.
There are some memory aids:
1. Remember there are 7 parts to the spectrum
The middle one is visible light
Visible light can be broken into colours of the rainbow (Red to violet)
So ... one side of visible light is infra red and the other side is ultra violet
So straight away you have the middle 3 remembered
Infra Red ---- Visible Light --- Ultra Violet
Next to Ultra Violet are X rays and then Gamma Rays
Gamma Rays symbol is a funny looking Y
the ones beyond visible light are from near the end of the alphabet
visible light ------- UV ------- X ------- Y (Gamma)
So that's 5 out of 7 remembered!
The only 2 remaining ones are:
Radio waves and micro waves
Radio waves are very long - up to 1,000 metres so they go first,
then next is micro waves
Microwaves are used in microwave cooking. The microwaves are absorbed by the food and change wavelength into their nextdoor neighbour in the spectrum - Infra red (heat)
Radio ----- Micro ------IR ------ Visible light ------ UV ------- X ------- Y
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