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#		Thing	Description	Topic	For	Against	Net
1051		Uncertainty principle	Foundational principle in quantum physics	Physical sciences	0	0	0
1052		Unit of measurement	Quantity standard	Physical sciences	0	0	0
1053		United States customary units	Units of measurement commonly used in the U.S.	Physical sciences	0	0	0
1054		Universe	Everything in space and time	Physical sciences	0	0	0
1055		Uranium	Chemical element with atomic number 92 (U)	Physical sciences	0	0	0
1056		Uranus	Seventh planet from the Sun	Physical sciences	0	0	0
1057		Urea	Organic compound	Physical sciences	0	0	0
1058		Ursa Major	Constellation in the northern sky	Physical sciences	0	0	0
1059		Ursa Minor	Constellation in the northern celestial hemisphere	Physical sciences	0	0	0
1060		Vacuum	Space that is empty of matter	Physical sciences	0	0	0
1061		Valence bond theory	One of two foundational theories of quantum chemistry	Physical sciences	0	0	0
1062		Valley	Low area between hills, often with a river running through it	Physical sciences	0	0	0
1063		Vanadium	Chemical element with atomic number 23 (V)	Physical sciences	0	0	0
1064		Vapor	Substances in the gas phase at a temperature lower than its critical point	Physical sciences	0	0	0
1065		Variable star	Star whose brightness fluctuates, as seen from Earth	Physical sciences	0	0	0
1066		Vega	Brightest star in the constellation Lyra	Physical sciences	0	0	0
1067		Velocity	Speed and direction of a motion	Physical sciences	0	0	0
1068		Venus	Second planet from the Sun	Physical sciences	0	0	0
1069		Virgo Cluster	Galaxy cluster in the constellation Virgo	Physical sciences	0	0	0
1070		Virgo Supercluster	Historical local supercluster home to the Milky Way	Physical sciences	0	0	0
1071		Viscosity	Resistance of a fluid to shear deformation	Physical sciences	0	0	0
1072		Visible spectrum	Portion of the electromagnetic spectrum that is visible to the human eye	Physical sciences	0	0	0
1073		Void (astronomy)	Vast empty spaces between filaments with few or no galaxies	Physical sciences	0	0	0
1074		Volcano	Rupture in a planet's crust where material escapes	Physical sciences	0	0	0
1075		Volt	SI derived unit of voltage	Physical sciences	0	0	0
1076		Voltage	Difference in electric potential between two points in space	Physical sciences	0	0	0
1077		W and Z bosons	Bosons that mediate the weak interaction	Physical sciences	0	0	0
1078		Walker circulation	Theorerical model of air flow in the atmosphere	Physical sciences	0	0	0
1079		Water	Chemical compound of hydrogen and oxygen	Physical sciences	0	0	0
1080		Water cycle	Biogeochemical cycle for movement of water on Earth	Physical sciences	0	0	0
1081		Water vapor	Gaseous phase of water	Physical sciences	0	0	0
1082		Waterfall	Point in a river or brook where water flows over a vertical drop	Physical sciences	0	0	0
1083		Watt	SI derived unit of power	Physical sciences	0	0	0
1084		Wave	Dynamic disturbance in a medium or field	Physical sciences	0	0	0
1085		Wave equation	Differential equation for the description of waves or standing wave	Physical sciences	0	0	0
1086		Wave interference	Phenomenon resulting from the superposition of two waves	Physical sciences	0	0	0
1087		Wavelength	Distance over which a wave's shape repeats	Physical sciences	0	0	0
1088		Wave–particle duality	Concept in quantum mechanics	Physical sciences	0	0	0
1089		Weak interaction	Interaction between subatomic particles	Physical sciences	0	0	0
1090		Weather	Short-term state of the atmosphere	Physical sciences	0	0	0
1091		Weather forecasting	Application of science and technology	Physical sciences	0	0	0
1092		Weather front	Boundary separating two masses of air of different densities	Physical sciences	0	0	0
1093		Weathering	Deterioration of rocks and minerals through exposure to the elements	Physical sciences	0	0	0
1094		Week	Time unit equal to seven days	Physical sciences	0	0	0
1095		Weighing scale	Instrument to measure the weight of an object	Physical sciences	0	0	0
1096		Weight	Force on a mass due to gravity	Physical sciences	0	0	0
1097		Wet season	Yearly period of high rainfall	Physical sciences	0	0	0
1098		Wetland	Ecosystem that is flooded or saturated with water	Physical sciences	0	0	0
1099		Whirlpool Galaxy	Galaxy in the constellation Canes Venatici	Physical sciences	0	0	0
1100		White	Lightest color	Physical sciences	0	0	0

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