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29-12-2018
Chemistry

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The entire range of electromagnetic wave frequencies is known as ______.

A) visible light
B) ultraviolet
C) the electromagnetic spectrum
D) magnetism

Which of the following devices does NOT utilize radio waves?

A) cellular telephone
B) radar
C) satellite
D) television remote control

Which of the following describes a material that allows only some light to pass through?

A) diffuse
B) opaque
C) translucent
D) transparent

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29-12-2018

The entire range of electromagnetic frequencies is known as C, the electromagnetic spectrum.

Television remote controls (D) do NOT use radio waves (they use infrared radiation).

A material that allows some, but not all, light to pass through it, would be described as translucent (C).

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