Cepheid variable Study guides, Class notes & Summaries
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ASTR 114 Astronomy - Final Exam "Cheat Sheet" | Latest 2023-2024
- Exam (elaborations) • 6 pages • 2023
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-1.5 magnitude Sirius appears 25x brighter 
than 2 magnitude Polaris. 
 “All neutron stars are pulsars, but not all 
pulsars are neutron stars” FALSE 
 “Spectroscopic Binary” is the term given to 
a pair of stars that we can determine are 
orbiting each other only by measuring their 
periodic Doppler shifts. 
 A 6.8 solar mass neutron star does NOT 
exist. 
 A loop of gas and charged particles 
following the magnetic field lines between 
sunspot’s poles is a Prominence/...
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Gizmos Student Exploration: Big Bang Theory – Hubble’s Law
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Gizmos Student Exploration: 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 
 
 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Standing by the side of a lonely highway at night, you see two motorcycle headlights, one in each direction. The headlight on your left appea...
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Big Bang Theory Hubble s Law Performance Assessment
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Name:	Date: 
 
 
STUDENT EXPLORATION: BIG BANG THEORY – HUBBLE’S LAW 
DIRECTIONS: FOLLOW THE INSTRUCTIONS TO GO THROUGH THE SIMULATION. RESPOND TO THE QUESTIONS AND PROMPTS IN THE ORANGE BOXES. 
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 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Standing by th...
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GIZMOS Student Exploration; Big Bang Theory | Hubble’s Law 2023
- Exam (elaborations) • 13 pages • 2023
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GIZMOS Student Exploration; Big Bang Theory | Hubble’s Law 2023. Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Standing by the side of a lonely highway at night, you see two motorcycle headlights, one in 
each direction. The headlight on your left appears brighter than the one on your right. 
1. If the headlights are equally bright, which motorcycle is closer? The one on the left side 
Explain: If it is brighter than that means its going to be closer because the light particle...
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Student Exploration: Big Bang Theory – Hubble’s Law ALL ANSWERS 100% CORRECT FALL-2021 SOLUTION GUARANTEED GRADE A+
- Exam (elaborations) • 14 pages • 2021
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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 other galaxies and eventually helped to ...
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GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law 2023
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GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law 2023. Collect data: Locate and select the yellow Cepheid variable star (A-091) in the lower left 
section of the Andromeda Galaxy. Click the Collect data button. You will see a graph of the 
apparent brightness of the star over time. 
A. How does the star’s apparent brightness change over time? It decreases, then increases, and 
decreases again. Its like a pattern. 
B. Turn on Show time probes. Set the left probe at the first brigh...
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GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law
- Exam (elaborations) • 13 pages • 2023
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GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law. absolute brightness, absorption spectrum, apparent brightness, Big Bang theory, 
blueshift, Cepheid variable, Doppler shift, Hubble constant, Hubble’s law, luminosity, 
megaparsec, period, redshift, spectrograph 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Standing by the side of a lonely highway at night, you see two motorcycle headlights, one in 
each direction. The headlight on your left appears brighter than ...
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GIZMOS STUDENT EXPLORATION: BIG BANG THEORY – HUBBLE’S LAW 2021 THE BEST EXAM
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GIZMOS STUDENT EXPLORATION: BIG BANG THEORY – 
HUBBLE’S LAW 
2021 THE BEST EXAM 
 
Student Exploration: 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 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Standing by the side of a lonely highway at night, you see two moto...
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GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law 2023 Answered.
- Exam (elaborations) • 13 pages • 2023
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GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law 2023 Answered. 
 
 
 
 
Name:		Date: 	 
 
 
Student Exploration: 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 
 
 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Standing by the side of a lonely highway...
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GIZMOS Student Exploration Big Bang Theory – Hubble’s Law (Answered 2021)
- Exam (elaborations) • 13 pages • 2022
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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
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