Gizmo: Star Spectra - 2023 All Answers are Correct
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Course
GIZMO
Institution
GIZMO
Gizmo: Star Spectra
Vocabulary: absorption spectrum, binary star, blue shift, 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? It forms a rainbow.
This...
Vocabulary: absorption spectrum, binary star, blue shift, 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? It forms a rainbow.
This band of colors is called a spectrum.
2. A rainbow is an example of a spectrum. What is the sequence of colors in a rainbow?
Red, orange, yellow, green, blue, indigo, violet.
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 absorption spectrum can tell
astronomers a great deal about the star.
1. On the Star Spectra Gizmo, turn on Show labels.
Select star 1 to see its absorption spectrum.
How many lines do you see in the spectrum? 10
2. Drag the Hydrogen spectrum next to the Star spectrum so that the edges line up. Do
some of the lines on the two spectra match up? Yes
3. Drag the Helium spectrum next to the Star spectrum. Do some lines match? No
4. Try out the other available spectra. Do any others have lines that match? Hydrogen,
Calcium?
5. Which elements have contributed to the spectrum of star 1? Hydrogen and helium.
2019
This study source was downloaded by 100000850872992 from CourseHero.com on 02-17-2023 14:40:48 GMT -06:00
, 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.
2019
This study source was downloaded by 100000850872992 from CourseHero.com on 02-17-2023 14:40:48 GMT -06:00
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