Cepheid variable Study guides, Class notes & Summaries
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M1L2: Gizmo Lab: Star Spectra – fall- 2021 ALL ANSWERS 100% CORRECT AID GRADE A+
- Exam (elaborations) • 6 pages • 2021
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Vocabulary: absorption spectrum, binary star, blueshift, Cepheid variable, emission spectrum, giant star, nebula, redshift, spectrum, star 
 
 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
 
 
This band of colors is called a spectrum. 
 
 
Gizmo Warm-up 
The interior of a star produces a continuous spectrum of light, like a rainbow. Cooler gases in the outer layers of the star absorb certain wavelengths of light, causing dark lines to appear in the spectrum. The resulting absorp...
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Gizmos Student Exploration: Big Bang Theory – Hubble’s Law
- Exam (elaborations) • 13 pages • 2022
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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 appears brighter...
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GIZMO: Big Bang Theory – Hubble’s Law
- Exam (elaborations) • 13 pages • 2022
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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 appears brighter ...
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GIZMOS Big Bang Theory – Hubble’s Law Lab Questions 2021 Answered.
- Exam (elaborations) • 13 pages • 2022
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GIZMOS Big Bang Theory – Hubble’s Law Lab Questions 2021 Answered. 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 ap...
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Student Exploration: Big Bang Theory – Hubble’s Law
- Exam (elaborations) • 14 pages • 2022
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- $8.49
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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 t...
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Gizmos Student Exploration: Big Bang Theory – Hubble’s Law
- Exam (elaborations) • 13 pages • 2022
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- $15.49
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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 appears br...
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GIZMO Big Bang (1).
- Exam (elaborations) • 10 pages • 2022
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Question: How do Cepheids allow astronomers to measure intergalactic distances? 
1. 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? 
B. Turn on Show time probes. Set the left probe at the first brightness peak, and the right probe at 
the second brightness...
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GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law 2021 (answered)
- Exam (elaborations) • 14 pages • 2022
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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 
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 measu...
-
Student Exploration: Big Bang Theory – Hubble’s Law ALL ANSWERS 100% CORRECT FALL-2021 SOLUTION AID GRADE A+
- Exam (elaborations) • 10 pages • 2021
-
- $10.29
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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 
 
 
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 ...
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Student Exploration: Star Spectra ALL ANSWERS 100% FALL-2021 SOLUTION CORRECT GUARANTEED GRADE A+
- Exam (elaborations) • 6 pages • 2021
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Vocabulary: absorption spectrum, binary star, blueshift, Cepheid variable, emission spectrum, 
giant star, nebula, redshift, spectrum, star 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
1. What happens when light goes through a prism? Light bends and the visible spectrum 
showing the colors of the rainbow are visible. 
This band of colors is called a spectrum. 
Red, Orange, Yellow, Green, Blue, Indigo, Violet 
2. A rainbow is an example of a spectrum. What is the sequence of col...