EM Waves & Atoms (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens when an electron moves to a higher orbit in an atom?
What happens when an electron moves to a higher orbit in an atom?
The atom absorbs EM radiation
What happens when an electron falls to a lower orbit in an atom?
What happens when an electron falls to a lower orbit in an atom?
The atom emits EM radiation
What can happen if an electron gains enough energy in an atom?
What can happen if an electron gains enough energy in an atom?
It can leave the atom to form an ion
Where do gamma rays originate from?
Where do gamma rays originate from?
Changes in the nucleus of an atom
Which types of EM radiation are hazardous to human body tissue?
Which types of EM radiation are hazardous to human body tissue?
UV light, X-rays, and gamma rays
What health risk does UV light exposure increase?
What health risk does UV light exposure increase?
Risk of skin cancer
What type of radiation are X-rays and gamma rays?
What type of radiation are X-rays and gamma rays?
Ionising radiation
Why can radio waves be used for TV and radio broadcasting?
Why can radio waves be used for TV and radio broadcasting?
Long wavelength travels far easily
Why are microwaves used for satellite communication?
Why are microwaves used for satellite communication?
They can penetrate the atmosphere
What does infrared radiation transfer?
What does infrared radiation transfer?
Thermal energy
Why is visible light best for fibre optics?
Why is visible light best for fibre optics?
Best reflection/scattering in glass
What property makes UV useful for energy-efficient lamps?
What property makes UV useful for energy-efficient lamps?
Radiates least heat but more energy