The Electromagnetic Spectrum (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of wave are electromagnetic waves?
What type of wave are electromagnetic waves?
Transverse waves
What speed do all EM waves travel at in a vacuum?
What speed do all EM waves travel at in a vacuum?
m/s
Which EM wave type has the longest wavelength?
Which EM wave type has the longest wavelength?
Radio waves
Which property makes radio waves ideal for communication?
Which property makes radio waves ideal for communication?
Pass through many materials
How do microwaves heat food in microwave ovens?
How do microwaves heat food in microwave ovens?
Make water molecules vibrate
Why is infrared radiation called 'heat radiation'?
Why is infrared radiation called 'heat radiation'?
All objects emit it; warmer objects emit more
Which colour of visible light has the longest wavelength?
Which colour of visible light has the longest wavelength?
Red
What special property does UV radiation have with certain substances?
What special property does UV radiation have with certain substances?
Causes them to fluoresce
Why are X-rays useful for medical imaging?
Why are X-rays useful for medical imaging?
Pass through soft tissue, absorbed by bone
What material is needed to shield against gamma rays?
What material is needed to shield against gamma rays?
Lead
Which EM waves are classified as ionising radiation?
Which EM waves are classified as ionising radiation?
High-energy UV, X-rays, gamma rays
In the equation , what happens to wavelength as frequency increases?
In the equation , what happens to wavelength as frequency increases?
Wavelength decreases