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Spending 20mins completing the following from class;

3 - Electromagnetic waves simple summary

3 - Electromagnetic waves A & D multi choice questions (NOT Q 5 + 6)

3 - Uses of em IR and microwaves

IF you have almost finished these in class, and finish these questions before 20mins is up, try some of the Qs on sheet "4 - Electromagnetic waves harder", but we will move on to these next week when we look into more depth about the USES and DANGERS of EM waves, so dont worry if you don't get on to these.