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8.8CD

Theories of the Origin of the Universe and EM Spectrum

QuestionAnswer
Big Bang Theory a theory that days that the universe began as a small point that expanded rapidly about 13.7 billion years ago
Red Shift occurs when a light source moves AWAY from an observer
Blue Shift occurs when a light source moves TOWARDS an observer
Oscillating Theory the theory that states the universe will continue to expand and contract in a cycle, forever
Big Crunch Theory the theory that states the expansion of space will eventually reverse and will recollapse, ultimately causing the cosmic scale factor to reach zero or cause a reformation of the universe with another "bang"
Evidence that Supports the Big Bang Theory red shift and the Cosmic Microwave Background radiation
Electromagnetic Spectrum a grouping of all possible energy levels of electromagnetic radiation from radio waves to gamma rays
Cosmic Microwave Background (CMB) electromagnetic radiation left over from early development of the universe that fills the universe; detected with a radio telescope and is evidence of the Big Bang theory
Wavelength the distance between any two corresponding points on successive oscillations of a wave, such as from peak to peak
Frequency the amount of waves that pass a given point over a period of time
Created by: Mrs_Bullock
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