_____________________light is the only type of EM wave detected by the human eye.

• Red
• Gamma
• Microwave
• Visible

_____ have the longest wavelengths and lowest frequencies of all electromagnetic waves.

• microwaves
• radio waves
• gamma rays
• ultraviolet

The shortest wavelength in visible light is______.

• violet
• red
• blue
• yellow

What is a vacuum? 

• A space with only air in it
• A space with NO matter at all present
• A machine you use to do your chores

Frequency is a measure of...

• length of the wave
• height of the wave
• number of waves a second
• number of waves an hour

Wave with the longest wavelength

• microwave
• radio
• gamma
• visible light

When the wavelength increases the frequency will

• increase
• decrease

All EM waves travel at  

• different speeds
• the speed of sound
• the speed of light
• the speed of a vacuum

EM waves have the same speed but different:

• frequency & medium 
• wavelength & frequency
• medium & wavelength
• color & medium

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