Electromagnetic Energy Energy Energy is transmitted along waves The sun emits energy in the form of? Electromagnetic waves Electromagnetic Energy is measured in 2 ways 1. Wavelength 2. Frequency (distance between (number of waves crests of a wave) in a given time) ESRT Page 14 High Energy Lowest Energy Label on your diagram in your notes!! Shortest wavelength : Highest Energy: Gamma rays ESRT Page ___ 14 Longest Wavelength Least Energy : Radio Waves Decreasing order of wavelengths Microwaves, Infrared, Visible, Ultraviolet and Gamma Rays Which visible color has the longest wavelength? Which visible color has the shortest wavelength? Red Violet/Blue Spectra Spectroscope: an instrument that divides visible light into colors 1. Continuous 2. Bright Line - used to ID elements Helium 3. Absorption used to ID stars