1. Electromagnetic Energy

2. Energy Energy is transmitted along waves The sun emits energy in the form of? Electromagnetic waves

3. Electromagnetic Energy is measured in 2 ways 1. Wavelength 2. Frequency (distance between (number of waves crests of a wave) in a given time)

5. ESRT Page 14 High Energy Lowest Energy Label on your diagram in your notes!!

6. Shortest wavelength : Highest Energy: Gamma rays ESRT Page ___ 14 Longest Wavelength Least Energy : Radio Waves

7. Decreasing order of wavelengths Microwaves, Infrared, Visible, Ultraviolet and Gamma Rays

8. Which visible color has the longest wavelength? Which visible color has the shortest wavelength? Red Violet/Blue

9. Spectra Spectroscope: an instrument that divides visible light into colors 1. Continuous 2. Bright Line - used to ID elements Helium

10. 3. Absorption – used to ID stars