EM Waves and Wireless Communications

What type of electromagnetic waves are used to cook food, predict the weather, and for communications?

• Microwaves

• Visible light

• Ultraviolet

• Radio waves

Electromagnetic waves are classified using what measurement?

• Power

• Frequency

• Energy

• Amplitude

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Which electromagnetic waves have the longest wavelengths?

• Infrared rays

• Ultraviolet

• Visible light

• Radio waves

What type of electromagnetic waves are used to take pictures of bones in medicine?

• Gamma rays

• Ultraviolet

• X-Rays

• Radio waves

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What type of electromagnetic waves have the most energy?

• X-Rays

• Gamma rays

• Infrared rays

• Ultraviolet

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What can electromagnetic waves travel through that mechanical waves can not travel through?

• brick

• Wood

• Vacuum

• all of the above

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What type of waves are used on a TV remote control?

• Infrared rays

• Radio waves

• Ultraviolet

• Visible light

What type of electromagnetic waves cause sunburns?

• Radio waves

• Ultraviolet

• Infrared rays

• Microwaves

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Energy that travels from the sun travels in the form of a wave we call...

• Magnetic energy

• Electromagnetic energy

• Solar electric energy

• Electric energy

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human eye can only detect only a small portion of this spectrum called

• Visible light

• Gamma rays

• Infrared rays

• Radio waves