Chapter 1. 156 Stellar Spectra

Map Learning Exercises

Stellar Spectra

Question Spectra and Temperature.

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{"title":"right","description":"This spectrum peaks at the shortest wavelength, and therefore was emitted by the star with the highest temperature. Assuming that all of the spectra have the same vertical axis, you can also say that it's the hottest because it is emitting with the greatest intensity.","type":"correct","color":"#99cc00","code":"[{\"shape\":\"rect\",\"coords\":\"331,14,499,243\"}]"}
Correct.
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Question Which part of the spectrum?

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{"title":"left","description":"This star emits most of its light in the infrared portion of the spectrum.","type":"correct","color":"#99cc00","code":"[{\"shape\":\"rect\",\"coords\":\"4,3,172,232\"}]"} {"title":"right","description":"This star emits most of its light in the ultraviolet portion of the spectrum.","type":"correct","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"329,3,497,232\"}]"} {"title":"center","description":"This star emits most of its light in the visible part of the spectrum. Try again.","type":"incorrect","color":"#33cccc","code":"[{\"shape\":\"rect\",\"coords\":\"170,1,329,230\"}]"}
Correct.
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Question Red stars.

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{"title":"left","description":"This star would be very dim, but it would emit some light in the visible part of the spectrum. Almost all of that light is red, so it would appear to be red to our eyes.","type":"correct","color":"#99cc00","code":"[{\"shape\":\"rect\",\"coords\":\"4,3,172,232\"}]"} {"title":"right","description":"This star would appear to be blue, or even white hot, to our eyes.","type":"incorrect","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"329,3,497,232\"}]"} {"title":"center","description":"This star is too hot to appear red.","type":"incorrect","color":"#33cccc","code":"[{\"shape\":\"rect\",\"coords\":\"170,1,329,230\"}]"}
Correct.
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