hydrogen - 2024 ACF Fall - Buzzpoints App

Question

This element is consumed in the CNO cycle and proton-proton chain. For 10 points each:

[10e] Name this most abundant element in the universe. A heavier isotope of this element is deuterium.

ANSWER: hydrogen [or H]

[10h] Transitions in the hyperfine structure of hydrogen create this spectral line, named for its wavelength. Radio waves in this feature are used to observe properties of galaxies.

ANSWER: 21 centimeter line [or 21 cm; reject equivalents of “21 centimeters”, such as “0.21 meters”]

[10m] Radio waves in the 21 centimeter line, unlike visible light, can also pass through this substance undeterred. The interstellar medium consists of gas, cosmic rays, and this substance.

ANSWER: cosmic dust [or extraterrestrial dust or interstellar dust or space dust or star dust]

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Summary


2024 ACF Fall at Claremont Colleges	fall	Y	5	12.00	100%	20%	0%
2024 ACF Fall at Cornell	fall	Y	6	15.00	100%	50%	0%
2024 ACF Fall at Illinois	fall	Y	9	12.22	89%	33%	0%
2024 ACF Fall at Rutgers	fall	Y	7	18.57	100%	71%	14%
2024 ACF Fall at Ohio State	fall	Y	7	17.14	100%	71%	0%
2024 ACF Fall at Washington	fall	Y	1	20.00	100%	100%	0%
2024 ACF Fall at Georgia	fall	Y	9	16.67	100%	56%	11%
2024 ACF Fall at North Carolina	fall	Y	7	14.29	100%	43%	0%

Data


Claremont B	UCLA D	10	0	0	10
UCLA E	Claremont C	10	0	10	20
UCLA A	Claremont A	10	0	0	10
Cornell D	Binghamton A	10	0	0	10
Cornell B	Binghamton B	10	0	10	20
Cornell C	RIT B	10	0	10	20
Cornell E	U of Rochester A	10	0	0	10
RIT A	Syracuse	10	0	10	20
Penn State	U of Rochester B	10	0	0	10
Chicago A	WashU A	10	0	10	20
Chicago B	Notre Dame C	10	0	0	10
Illinois D	Notre Dame B	10	0	0	10
WashU B	Indiana	10	0	0	10
Iowa A	Purdue A	10	0	10	20
Northwestern B	Illinois C	10	0	0	10
Northwestern A	Notre Dame A	10	0	10	20
Purdue B	Iowa B	10	0	0	10
SIUE	Purdue C	0	0	0	0
UCSD	UCLA B	10	0	0	10
UCLA C	USC	10	0	0	10
Penn B	Bard A	10	0	10	20
Columbia A	Fordham A	10	0	10	20
Columbia B	Maryland A	10	0	0	10
NYU A	Lehigh B	10	0	10	20
NYU B	Penn A	10	0	10	20
Maryland B	Princeton A	10	0	0	10
Columbia J	Rutgers A	10	10	10	30
Jefferson County Scholars	CWRU A	10	0	10	20
CWRU C	Michigan D	10	0	10	20
Michigan State B	Miami C	10	0	0	10
UW Wrath	UBC A	10	0	10	20
Michigan B	Ohio State A	10	0	10	20
Michigan C	Ohio State B	10	0	0	10
Miami B	West Virginia A	10	0	10	20
Michigan A	West Virginia B	10	0	10	20
Tennessee A	Alabama A	10	0	10	20
Auburn A	South Carolina A	10	10	10	30
Auburn B	Southern	10	0	0	10
Mississippi State A	Auburn C	10	0	10	20
Georgia Tech B	Clemson A	10	0	10	20
Emory A	Georgia Tech C	10	0	0	10
Tennessee B	Emory Oxford	10	0	10	20
Vanderbilt A	Georgia Tech D	10	0	0	10
South Carolina B	Vanderbilt B	10	0	0	10
Duke B	UNC D	10	0	10	20
Appalachian State A	James Madison A	10	0	0	10
Liberty A	William & Mary	10	0	10	20
UNC B	Liberty C	10	0	10	20
Virginia	Tusculum	10	0	0	10
Virginia Tech A	VCU	10	0	0	10
Virginia Tech B	James Madison B	10	0	0	10