Final answer:
The statement that the electromagnetic spectrum can be described in terms of energy, wavelength, or frequency is true, with their interrelationship defined by E = hν and c = λf, and segments of the spectrum having specific ranges for these characteristics.
Step-by-step explanation:
The statement that the electromagnetic spectrum can be expressed in terms of energy, wavelength, or frequency is true. Electromagnetic radiation can indeed be described by these three interrelated characteristics. The energy of electromagnetic waves is directly proportional to their frequency and inversely proportional to their wavelength. The relationship between these quantities is outlined by the equation E = hν (where E is energy, h is Planck's constant, and ν is frequency), and c = λf (where c is the speed of light, λ is wavelength, and f is frequency). Different parts of the electromagnetic spectrum such as gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio waves are distinguished by specific ranges of wavelength, frequency, and hence energy.