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Author Question: We can learn a lot about the properties of a star by studying its spectrum. All of the following ... (Read 68 times)

nenivikky

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on: Jul 27, 2018
We can learn a lot about the properties of a star by studying its spectrum. All of the following statements are true except one. Which one?
 
  A) The peak of the star's thermal emission tells us its temperature: Hotter stars peak at shorter (bluer) wavelengths.
  B) The total amount of light in the spectrum tells us the star's radius.
  C) We can identify chemical elements present in the star by recognizing patterns of spectral lines that correspond to particular chemicals.
  D) We can look at Doppler shifts of spectral lines to determine the star's speed toward or away from us.

Question 2

Computer simulations and the huge structures observed in the universe support the ________ model of the universe.
 
  Fill in the blank(s) with correct word


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mk6555

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

dark-matter-dominated


nenivikky

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

lcapri7

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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