Question

Density perturbations named for the constancy of this quantity are fluctuations in relative energy densities that are contrasted with primordial adiabatic density perturbations. Setting this quantity to zero and solving for rho in the first Friedmann equation gives the critical density. W·MAP’s measurement of the (*) density (0[1])parameter as 1.02 implies that (0[1])this quantity is zero. (0[1])Negative values of this quantity imply a hyperbolic universe. (10[3]0[1])Gravitational (10[1]0[2])lensing (10[1]0[1])results (0[1])from (10[1])an increase in this quantity’s (10[1]0[1])magnitude (10[1])near massive objects that can be analogized to (0[1])placing a weight (10[1])on a stretched (0[1])piece of fabric. (0[2])For 10 points, name this geometric quantity whose global value would indicate whether (10[1])the universe (0[1])is flat. (10[5]0[3])■END■ (10[7]0[6])

ANSWER: curvature of the universe [accept isocurvature density perturbations]
<Lalit Maharjan, Science - Astronomy&gt; ~24781~ &lt;Editor: David Bass>
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Summary

2023 PACE NSC06/10/2023Y3367%0%0%91.27

Buzzes

PlayerTeamOpponentBuzz PositionValue
Rushil MurikinatiPlymouthTroy450
Camden WilliamsMexicoThomas Jefferson A500
Shreyas SinghUniversity LabMira Loma540
Michael KarpovBarrington AChattahoochee A6310
Anish JindalParkway WestHoover B630
Ali HamzehKinkaidSolon6310
Aryan PathakLake HighlandMaggie Walker C6310
Kaiwen XiaoIrvington ABarrington B640
Russell DillakNorthmont BBelvidere6410
Arnou ThammarakNew BrightonJohns Creek B640
Sophie HiggsRichard MontgomeryWilliam Fremd6510
Bernie JinWinston Churchill BDunbar650
Sky HongChoate Rosemary HallStevenson A660
Aaryan SumeshThomas Jefferson CHinsdale Central6710
Vardhan AgnihotriSt. Mark'sDetroit Catholic Central A7210
Brielle RachRockford Auburn BElkhorn North720
Thomas BelcherSaint JosephWinnebago7310
Ella SheffieldMercer CountyHeights810
Timothy PorterMaggie Walker ANorris8410
Tarun DeviChattahoochee BNorthmont A870
Joseph HarrisonDetroit Catholic Central CHunter B900
Sean HarbisonWest PointCincinnati Hills Christian900
Charles HeydtMidtownRockford Auburn A10310
Jeffrey XuJohns Creek ADetroit Country Day1050
Hayden QiJohns Creek BNew Brighton10710
Ave RiegerNorthmont AChattahoochee B1070
Monit KarmakerStevenson AChoate Rosemary Hall1070
Anila MoparthiLincoln-Way EastJohn Adams B10710
Hayden LeyWashingtonNorman1070
Dennis YangTroyPlymouth10710
Matthew KohnHunter AThomas Jefferson B10710
Braden BoothDallas CountyWinston Churchill A10710
Eric HuMaggie Walker BMoberly10810
Dylan ChengThomas Jefferson AMexico10810
Kaushik GollamudiBarrington BIrvington A10810
Riona DuncanWalter PaytonInnovation Academy A1080
Tony HanCarbondaleJohn Adams A10810
Jiaxu LiuDetroit Country DayJohns Creek A10810
Charlie BorkElkhorn NorthRockford Auburn B10810
Aiden DombroskyHoover BParkway West1080
Aatreyo BhattacharyyaMira LomaUniversity Lab1080
Adhav RavikumarInnovation Academy AWalter Payton1080
Brayden FerrellHeightsMercer County1080
Varun VenkatagiriInnovation Academy BWaukee1080
Anthony ChalhoubDetroit Catholic Central BWoodland10810