tree rings - 2024 ARCADIA - Buzzpoints App

Question

Answer the following about ways to reconstruct the temperature history of the Earth, for 10 points each.

[10e] Recent temperature measurements can be constructed by observing these features in dendroclimatology, since they are wider when temperatures are warm. Tree ages are determined by counting these features.

ANSWER: tree rings

[10h] The abundance of this isotope in polar ice cores tracks temperatures within the last million years, since it is depleted in ice that formed during glacial periods. Water that evaporates from the oceans is depleted in this isotope.

ANSWER: oxygen-18 [or O-18]

[10m] Very ancient temperatures can be reconstructed from alkene unsaturation and oxygen-18 abundance in sediments of organisms that biologically produce this compound, like foraminifera and coccolithophores. Aragonite is a mineral composed of this compound.

ANSWER: calcium carbonate [or CaCO3]

<VD, Other Science>

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Summary


2024 ARCADIA at BU	2024-12-06	Y	6	20.00	100%	67%	33%
2024 ARCADIA at Duke	2024-12-06	Y	3	16.67	100%	67%	0%
2024 ARCADIA at Missouri S&T	2024-12-06	Y	2	15.00	50%	100%	0%
2024 ARCADIA Online	2025-05-17	Y	5	18.00	100%	60%	20%
2024 ARCADIA at Penn State	2024-12-06	Y	2	10.00	100%	0%	0%
2024 ARCADIA at Florida Tech	2024-12-06	Y	4	17.50	100%	50%	25%
2024 ARCADIA at UC Berkeley	2024-12-06	Y	2	25.00	100%	50%	100%
2024 ARCADIA at Waterloo	2024-11-09	Y	6	15.00	100%	33%	17%
2024 ARCADIA at GT	2024-12-06	Y	5	16.00	100%	60%	0%
2024 ARCADIA at Illinois	2024-11-09	Y	4	12.50	100%	0%	25%
2024 ARCADIA at Warwick	2024-12-06	Y	5	16.00	100%	60%	0%
2024 ARCADIA at Claremont	2024-11-02	N	3	20.00	100%	67%	33%

Data


Boston College B	Tufts A	10	0	0	10
Clark Wilson	Bowdoin A	10	0	0	10
Bowdoin B	Harvard	10	0	10	20
Clark House	Bowdoin C	10	0	10	20
Tufts B	BU	10	10	10	30
Yale	Amherst	10	10	10	30
North Carolina B	South Carolina	10	0	10	20
North Carolina A	Virginia Tech A	10	0	10	20
Virginia Tech C	Virginia Tech B	10	0	0	10
Truman	Missouri	10	0	10	20
Squidward Community College	WashU	0	0	10	10
ASU->Stanford->ASU pipeline	Toyota Tundra Turbos — Twisting Truths - Tackling Trivia - Taming Titans	10	0	10	20
In the Mood for Buzz	Paddington in Peru (2024)	10	0	0	10
Old and Young	Madmen and Specialists	10	0	0	10
she limp on my waltz till i feel pathetique	The cult of SGA	10	10	10	30
bingy academy	Social credit go vroom	10	0	10	20
Pitt	Penn State	10	0	0	10
RIT	Maryland	10	0	0	10
UCF B	USF	10	0	0	10
UF B	UF A	10	10	10	30
UCF A	UF C	10	0	10	20
Valencia	Florida Tech	10	0	0	10
Berkeley B	Berkeley Past	10	10	0	20
Stanford	Berkeley A	10	10	10	30
Carleton A	McMaster ApocolocyntosisBidii	10	0	0	10
Ottawa Absolomabsolomabsolom	Toronto Chestnut Rice and Kamehameha	10	0	0	10
Toronto A	McGill A	10	10	10	30
Toronto B	Waterloo Aspidistra	10	0	10	20
Waterloo Basic	Toronto Metropolitan A	10	0	0	10
Waterloo Cloze	Toronto Disband the Club 2k24	10	0	0	10
Georgia Tech C	Georgia Tech A	10	0	0	10
Georgia Tech D	Lambert	10	0	10	20
Georgia Tech B	Innovation Academy A	10	0	10	20
Johns Creek	Milton	10	0	0	10
Innovation Academy B	Mississippi State	10	0	10	20
Chicago A	Chicago B	10	0	0	10
Illinois Orange	Illinois Blue	10	10	0	20
Notre Dame	SIUE	10	0	0	10
Purdue B	Purdue A	10	0	0	10
Imperial B	Bristol	10	0	10	20
Imperial A	Cambridge A	10	0	10	20
LSE B	Cambridge B	10	0	0	10
Warwick A	LSE A	10	0	10	20
Warwick B	Warwick C	10	0	0	10