Answer:

Which electromagnetic wave has the longest wavelength? Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.

Which electromagnetic wave has the shortest wavelength? Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies.

Observe what happens to the wavelength of the electromagnetic waves as they progress (goes rightward from the figure). Does the wavelength of the EM waves increase or decrease as we go from radio wave to gamma Ray?

Electromagnetic radiation can be expressed in terms of energy, wavelength, or frequency. Frequency is measured in cycles per second, or Hertz. Wavelength is measured in meters. Energy is measured in electron volts.