EM Waves

How are EM waves different from Mechanical waves?

• EM waves need a medium

• Mechanical waves need a medium

• EM waves can travel through empty space only

• Mechanical waves transfer matter

Infrared has a higher frequency than

• x-ray

• gamma

• visible light

• radio

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NGSS.HS-PS4-1

Which wave has the largest wavelength?

• A

• B

• C

• None (same wavelength)

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Wave with shortest wavelength

• UV

• radio waves

• gamma

• visible

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________________ are waves used by cops to test the speed of your car with RADAR.

• Ultraviolet

• Infrared

• Radio

• Microwaves

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Which of these lists the EM waves from Highest to lowest frequency?

• Radio -  Micro - Gamma - Visible light - UV - Xrays - Infrared - Xrays

• Radio - Micro - Infrared - Visible light - UV - X - Gamma waves

• Gamma - Xray - UV - Visible light - Infrared - Micro - radio

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NGSS.HS-PS4-1

Predict which EM wave could cause more damage 

• Radio wave

• UV wave

• X-ray

• Gamma ray

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NGSS.HS-PS4-4

What type of EM radiation is utilized in treating cancer, using its high energy to destroy the cells in a tumour?

• gamma ray

• x-ray

• visible light

• microwave

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NGSS.HS-PS4-3

The electromagnetic spectrum shows a family of EM waves arranged ______________

• in alphabetical order

• in order of use and application

• in order of frequency and wavelength

• in order of luminosity of radiation emitted.

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NGSS.HS-PS4-1

EM waves used in checking the authenticity of bank notes

• microwave

• infrared

• ultraviolet

• X-ray

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