science 10

Electromagnetic waves vary in

• the speed they travel in a vacuum.

• wavelength and frequency.

• the way they reflect.

• the orientation of their electric and magnetic fields.

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To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its

• wavelength.

• intensity.

• refraction.

• amplitude.

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The full range of frequencies of electromagnetic radiation is called

• visible light.

• radio waves.

• the electromagnetic spectrum.

• invisible radiation.

The waves with the longest wavelengths in the electromagnetic spectrum are

• Infrared rays.

• radio waves

• gamma rays

• X-rays

The visible light spectrum ranges between

• radar waves and X-rays.

• television waves and infrared rays.

• infrared rays and ultraviolet rays.

• ultraviolet rays and gamma rays.

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Cellular telephones utilize

• radar waves.

• very high frequency waves.

• very low frequency waves.

• microwaves.

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Which is an example of a radio wave

• television

• heat lamp

• vision

• sun light

What makes electromagnetic waves different from mechanical waves?

• no medium required

• medium needed

• light -catalyzed

• space exclusive

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The shortest wavelength in visible light is______.

• violet
• red
• blue
• yellow

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This wave has the second highest frequency on the spectrum. 

• microwaves
• visible light
• x-rays
• gamma ray

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