Electromagnetic (EM) Waves (AQA GCSE Physics): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
What type of waves are electromagnetic waves?
What type of waves are electromagnetic waves?
Transverse waves
At what speed do all EM waves travel through a vacuum?
At what speed do all EM waves travel through a vacuum?
m/s
Do electromagnetic waves need a medium to travel through?
Do electromagnetic waves need a medium to travel through?
No, they can travel in a vacuum
Which colour of visible light has the longest wavelength?
Which colour of visible light has the longest wavelength?
Red
As wavelength decreases, what happens to frequency for EM waves?
As wavelength decreases, what happens to frequency for EM waves?
Frequency increases
As frequency increases, what happens to the energy of an EM wave?
As frequency increases, what happens to the energy of an EM wave?
Energy increases
What allows radio waves to travel long distances around Earth?
What allows radio waves to travel long distances around Earth?
Reflection off ionosphere
Why can longer radio waves spread out between hills?
Why can longer radio waves spread out between hills?
Due to diffraction
How do microwaves heat food?
How do microwaves heat food?
Water molecules absorb energy
Why are microwaves used for satellite communication?
Why are microwaves used for satellite communication?
Pass through atmosphere easily
What are infrared cameras used to check buildings for?
What are infrared cameras used to check buildings for?
Heat losses
What transmits light pulses in fibre optic communication?
What transmits light pulses in fibre optic communication?
Thin strands of glass
How is UV light used in energy efficient light bulbs?
How is UV light used in energy efficient light bulbs?
Created inside, converted to visible
What property allows X-rays and gamma rays to be used for medical imaging?
What property allows X-rays and gamma rays to be used for medical imaging?
Very penetrating
Which part of the EM spectrum can the human retina detect?
Which part of the EM spectrum can the human retina detect?
Visible light only