Student Exploration: Big Bang Theory
Florida Agricultural & Mechanical University
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Big Bang Theory – Hubble’s Law.
- Exam (elaborations) • 14 pages • 2022
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Big Bang Theory – Hubble’s Law. Vocabulary: absolute brightness, absorption spectrum, apparent brightness, Big Bang theory, blueshift, 
Cepheid variable, Doppler shift, Hubble constant, Hubble’s law, luminosity, megaparsec, period, redshift, 
spectrograph 
Gizmo Warm-up 
In 1912, an astronomer named Henrietta Swan Leavitt studied a class of 
stars called Cepheid variables. 
These stars change from bright to dim to bright again. 
Her discoveries led to a method of measuring distances to oth...
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