Waves the electromagnetic spectrum
2 marks · NormalState two properties that are shared by all waves in the electromagnetic spectrum.
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Must show: Any two correct properties, e.g. transverse, speed in vacuum, reflection/refraction, energy transfer
Also accept: They are all transverse waves; They all travel at 3.0 × 10^8 m/s in a vacuum; They transfer energy; They can be reflected and refracted
Common mistakes: Giving properties that are not general, such as visible to the eye or carrying charge
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Marking points
B1 · 1 mark · One correct shared property stated.
B2 · 1 mark · A second correct shared property stated.
Worked solution
Any two: All electromagnetic waves are transverse; all travel at 3.0 × 10^8 m/s in vacuum; all transfer energy; all can be reflected and refracted.