# Unit 2 Quiz - Chapter 2 & 3_ AST1002-Astronomy-20201-85656-Valk--ONLINE.pdf

• 21
• 100% (4) 4 out of 4 people found this document helpful

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 1 - 5 out of 21 pages.

10/4/2019Unit 2 Quiz - Chapter 2 & 3: AST1002-Astronomy-20201-85656-Valk--ONLINE1/21Unit 2 Quiz - Chapter 2 & 3DueOct 6 at 11:59pmPoints50Questions50Availableuntil Oct 6 at 11:59pmTime Limit120 MinutesAllowed AttemptsUnlimitedInstructionsAttempt HistoryAttemptTimeScoreKEPTAttempt 65 minutes49 out of 50LATESTAttempt 65 minutes49 out of 50Attempt 55 minutes47 out of 50Attempt 44 minutes41 out of 50Attempt 38 minutes39 out of 50Attempt 24 minutes34 out of 50Attempt 12 minutes22 out of 50Correct answers are hidden.Score for this attempt:49out of 50Submitted Oct 4 at 10:18pmThis attempt took 5 minutes.The weekly multiple choice quiz may be repeated as many times as you like to keep the highest grade.Take the Quiz Again1 / 1 ptsQuestion 1Radio waves, visible light, and X-rays are all types of electromagneticradiation.
10/4/2019Unit 2 Quiz - Chapter 2 & 3: AST1002-Astronomy-20201-85656-Valk--ONLINE
2/21
1 / 1 ptsQuestion 2Observations in the X-ray portion of the spectrum are routinely done fromthe surface of the Earth.
1 / 1 ptsQuestion 3A blue star has a higher surface temperature than a red star.
1 / 1 ptsQuestion 4According to Wein's law, the higher the surface temperature of a star, theredder its color.TrueFalse
10/4/2019Unit 2 Quiz - Chapter 2 & 3: AST1002-Astronomy-20201-85656-Valk--ONLINE1 / 1 ptsQuestion 5The spectral lines of each element are distinctive to that element, whether weare looking at emission or absorption lines.
3/21
1 / 1 ptsQuestion 6An absorption line spectrum, with dark lines crossing the rainbow of thecontinuum, is produced by a low-density hot gas.
1 / 1 ptsQuestion 7An emission line results from an electron falling from a higher to lowerenergy orbital around its atomic nucleus.
10/4/2019Unit 2 Quiz - Chapter 2 & 3: AST1002-Astronomy-20201-85656-Valk--ONLINE1 / 1 ptsQuestion 8Spectral lines are produced when an electron makes a transition from oneenergy state to another.TrueFalse
4/211 / 1 pts
1 / 1 ptsQuestion 9In the Doppler effect, a red shift of spectral lines shows us the source isreceding from us.
1 / 1 ptsQuestion 10Spectroscopy of a star can reveal its temperature, composition, and line-of-sight motion.

Course Hero member to access this document

Course Hero member to access this document

End of preview. Want to read all 21 pages?