Question

This phenomenon underwent a change 784,000 years ago named for Bernard Brunhes and Motonori Matuyama. Bauer (10[1])plots compare this phenomenon’s dip angle with its declination, which is zero on agonic (“ay-gonic”) lines. Changes in this phenomenon’s orientation delineate chrons. (-5[1])This phenomenon’s strength reaches a minimum at the South Atlantic Anomaly, (10[1])where the van Allen belts are closest to the surface. Dynamo theory posits this phenomenon (10[1])is produced by the convection (-5[1])of iron and nickel. (10[2])The interaction of (-5[1])solar wind with this phenomenon forms aurorae. (10[1])For 10 points, (10[1])the Earth’s core produces what phenomenon that makes compasses point north? (10[1])■END■ (10[2])

ANSWER: geomagnetic field [or the Earth’s magnetic field or Earth’s magnetosphere or equivalents; prompt on magnetic field or magnetosphere with “of what body?”; prompt on geomagnetic reversal with “which involves what entity?”]
<Other Science>
= Average correct buzz position

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Summary

2024 ACF Fall at Ohio StatefallY250%0%50%29.00
2024 ACF Fall at WashingtonfallY1100%0%0%74.00
2024 ACF Fall at GeorgiafallY1100%0%100%97.00
2024 ACF Fall at North CarolinafallY3100%0%33%79.33
2024 ACF Fall at IllinoisfallY10100%0%30%72.70

Buzzes

PlayerTeamOpponentBuzz PositionValue
Ezra SantosChicago APurdue B1510
Ben KoberleinNotre Dame APurdue A37-5
Daniel KozintsevIllinois AIowa A4810
David NickelPurdue CWashU B6310
Owen AshbrookIowa BIllinois C68-5
Vikas KothariNorthwestern BIllinois B7210
Arthur ZhangNorthwestern AIllinois D7210
Emmett ChoChicago BSIUE75-5
Sebastian PujetWashU AIndiana8210
Christopher JosephNotre Dame CNotre Dame B8510
Matthew WestleyPurdue ANotre Dame A9610
Danielle WebbSIUEChicago B9710
Jack PirosIllinois CIowa B9710