Electromagnetic Energy

True or false: as you move along the spectrum, from radio to gamma waves, the wavelengths decrease in size (get smaller)

• true

• false

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

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

• Gamma Rays
• Radio Waves
• Visible Light
• Infrared rays

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

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

How are electromagnetic waves different from sound waves? 

• They have very short wavelengths 

• They transmit energy instead of matter 

• They can travel through empty space

• They can change direction by reflection 

Which of the following electromagnetic waves has the second highest energy?

• gamma ray

• X-ray

• visible light wave

• microwave

High frequency waves have _________ wavelengths.

• varying
• long
• the same
• short

The shortest wavelength in visible light is______.

• violet
• red
• blue
• yellow

Where do we find infrared electromagnetic radiation?

• from anything warm

• from red lights

• from rainbows

• from X-Ray machines

What wavelengths do cell phones use for transmitting signals

• radio waves

• ultra violet waves

• microwaves

• electrical waves