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Using Electromagnetic Radiation to Understand Celestial Objects

Match the type of EM Radiation or an application of it (e.g., Spectroscopy, Photometry, ...) to what it can tell us about Celestial Objects.
AB
Gamma RaysIndicate a violent cosmic event
Photometry -- Star ColourIndicates star temperature
Photometry -- Peak Intensity toward UltravioletIndicates a hot star
Continuous SpectrumIndicates a hot, high pressure burning solid, liquid or gas light source
Absorption SpectrumIndicates the elements present in a "cool" gas cloud around the source
Emission SpectrumIndicates the elements in a hot glowing gas.
Photometry -- Peak Intensity toward InfraredIndicates a cool star
MicrowavesIndicates a relatively low energy event (or dispersed energy over time)
Intensity of Balmer LinesIndicates the presence of hydrogen and the temperature of the light source


Ms. Telford
Fenelon Falls Secondary School

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