Answer
Wavelength: the distance between two consecutive peaks or troughs in a wave.
Frequency: the number of waves (cycles) per second that pass a given point in space.
Photon Energy: the amount of energy carried by a photon
Speed of Travel: speed of light (2.998*10$^8$ m/s)
Increasing Wavelength: gamma rays, ultraviolet, visible light, microwaves
Increasing Frequency: microwaves, visible light, ultraviolet, gamma rays
Increasing Photon Energy: microwaves, visible light, ultraviolet, gamma rays
All types of EMR have the same speed of travel
Work Step by Step
The definitions were provided in the text. By looking at a diagram of the electromagnetic spectrum, you can see that the order of these types of EMR by increasing wavelength is gamma rays, ultraviolet, visible light, and finally microwaves. Because frequency and photon energy are both inversely proportional to wavelength, the order is opposite that of wavelength. Due to the fact that the speed of travel is constant no matter the wavelength, all types of EMR have the same speed of travel.
