Electromagnetic Spectrum

What are electromagnetic waves?

• sound waves
• electric & magnetic fields (energy) that travel through empty space very quickly
• Someone's name
• things like longitudinal waves

The electromagnetic spectrum includes the complete range of electromagnetic waves placed in order of:

• increasing amplitutde
• increasing wavelength
• increasing frequency

As the frequency of an electromagnetic wave increases, the amount of energy in that wave...

• increases.
• decreases.
• stays the same.

High frequency waves have _________ wavelengths.

• varying
• long
• the same
• short

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low

Which section of the spectrum is the ONLY one we can see?

• X-rays
• Visible Light
• Gamma Rays
• Ultraviolet Rays

How much of the electromagnetic spectrum is made up of visible light?

• only a small portion
• a very l;arge portion
• about half

How are electromagnetic waves different from other waves? 

• They have very short wavelengths 
• They transmit energy instead of matter 
• They can travel through empty space
• They can change direction by reflection 

For waves in any medium, as the wavelength decreases, what happens to the frequency?

• It also decrease
• It stays the same
• It increases

Select the correct order of waves on the EMS from the longest wavelength to the shortest wavelength

• Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
• Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
• Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
• Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma