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GIZMOS Star Spectra

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Exam (elaborations) GIZMOS Star Spectra Student Exploration: Star Spectra 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 whe...

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  • 14 de diciembre de 2021
  • 6
  • 2021/2022
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GIZMOS Star Spectra

Name: ______________________________________ Date: ________________________



Student Exploration: Star Spectra

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.




m
This band of colors is called a spectrum.




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Red, Orange, Yellow, Green, Blue, Indigo, Violet




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2. A rainbow is an example of a spectrum. What is the sequence of colors in a rainbow?




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rs e
_________________________________________________________________________
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Gizmo Warm-up
The interior of a star produces a continuous spectrum of light,
o

like a rainbow. Cooler gases in the outer layers of the star
aC s


absorb certain wavelengths of light, causing dark lines to appear
vi y re


in the spectrum. The resulting absorption spectrum can tell
astronomers a great deal about the star.

1. On the Star Spectra Gizmo™, turn on Show labels. Select
ed d




star 1 to see its absorption spectrum.
ar stu




How many lines do you see in the spectrum? 10
is




2. Drag the Hydrogen spectrum next to the Star spectrum so that the edges line up. Do some
Th




of the lines on the two spectra match up? Yes, 4 of them line up.


3. Drag the Helium spectrum next to the Star spectrum. Do some lines match? Yes they all
sh




match.


4. Try out the other available spectra. Do any others have lines that match? No, some have
some lines matching but not the majority of them.




This study source was downloaded by 100000828331062 from CourseHero.com on 07-20-2021 08:51:35 GMT -05:00


https://www.coursehero.com/file/54112041/Gizmos-Star-Spectra/

, 5. Which elements have contributed to the spectrum of star 1? Hydrogen and Helium,

Note: The elements in a star’s spectrum do not necessarily reflect what the star is made of.
The absorption spectrum is mostly determined by the surface temperature of the star.




m
er as
co
eH w
o.
rs e
ou urc
o
aC s
vi y re
ed d
ar stu
is
Th
sh




This study source was downloaded by 100000828331062 from CourseHero.com on 07-20-2021 08:51:35 GMT -05:00


https://www.coursehero.com/file/54112041/Gizmos-Star-Spectra/

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