What describes the entire range of all possible electromagnetic radiation?

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Multiple Choice

What describes the entire range of all possible electromagnetic radiation?

Explanation:
All electromagnetic radiation spans a continuous range of wavelengths from very long radio waves to very short gamma rays. This complete set is described by the electromagnetic spectrum. It includes radio, microwave, infrared, visible, ultraviolet, X-ray, and gamma-ray regions, all part of one connected continuum. The other terms refer to only portions of that continuum: the visible spectrum is just what we can see, the radio spectrum covers only radio frequencies, and the ionizing portion refers to the higher-energy end capable of ionizing atoms—still a subset, not the whole range.

All electromagnetic radiation spans a continuous range of wavelengths from very long radio waves to very short gamma rays. This complete set is described by the electromagnetic spectrum. It includes radio, microwave, infrared, visible, ultraviolet, X-ray, and gamma-ray regions, all part of one connected continuum.

The other terms refer to only portions of that continuum: the visible spectrum is just what we can see, the radio spectrum covers only radio frequencies, and the ionizing portion refers to the higher-energy end capable of ionizing atoms—still a subset, not the whole range.

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