Electromagnetic Spectrum

Front

Which statement about electromagnetic waves is correct?

• All electromagnetic waves are harmful to people
• All electromagnetic waves have the same wavelength
• In Vacuum, all electromagnetic waves travels at the same speed
• In Vacuum, visible light travels faster than all the other electromagnetic waves

Back

In Vacuum, all electromagnetic waves travels at the same speed

Front

Which regions of the electromagnetic spectrum can be used to cook food?

Back

Infrared and Microwave

Front

Which region of the electromagnetic spectrum is used to communicate with artificial satellites? Options: Radio waves, Microwaves, Infrared, Visible Light

Back

Microwaves

Front

A lamp is used to sterilize water in an aquarium, what light is used? Options: Infrared, Red light, Green light, Ultraviolet

Back

Ultraviolet

Front

Back

Front

Which statement about optical fibers is correct?

Back

Visible light and infrared are used because glass is transparent to these waves

Front

What does the electromagnetic spectrum table show? Options: Wavelength, Speed, Frequency, Amplitude

Back

Frequency

Front

Which list shows the parts of the electromagnetic spectrum in order of decreasing wavelength?

Back

Microwaves, infrared, visible light

Front

Back

Front

Which of the following sentences about infrared waves is true?

• They can be used to treat cancerous tumors
• They can be used to make image of bones, through the skin
• They can be used for cooking
• They are used to send communication signals to satellites

Back

They can be used for cooking