Electromagnetic Waves

What is an example of a radio wave?

• Vision

• Television

• Heat lamp

• Sunlight

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The waves with the longest wavelength in the electromagnetic spectrum are...

• X-rays

• Infrared waves

• Gamma rays

• Radio waves

Electromagnetic waves vary in...

• The way they reflect.

• The speed they travel in a vacuum.

• Wavelength and frequency.

• The orientation of their electric and magnetic fields.

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Which of the following occurs as a light wave bends when it passes from on medium to another?

• constructive interference

• refraction

• reflection

• destructive interference

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X-ray photographs show softer tissues...

• as dark, highly exposed areas.

• as bright white areas.

• as invisible.

• the same as dense bones.

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What is the electromagnetic spectrum?

• The rainbow

• The full range of wave frequencies of electromagnetic radiation which is called the electromagnetic spectrum

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Light acts as...

• a wave

• both a wave and a particle

• a particle

• neither a wave or a particle

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To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and it's...

• amplitude

• intensity

• wavelength

• refraction

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Cellular phones utilize...

• microwaves

• radar waves

• very high frequency waves

• very low frequency waves

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Infrared rays have a shorter wavelength than...

• radio waves

• gamma rays

• X-rays

• Ultraviolet rays

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