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#		Thing	Description	Topic	For	Against	Net
801		Pound (mass)	Unit of mass	Physical sciences	0	0	0
802		Power (physics)	Amount of energy transferred or converted per unit time	Physical sciences	0	0	0
803		Prairie	Ecosystems considered part of the temperate grasslands, savannas, and shrublands biome	Physical sciences	0	0	0
804		Praseodymium	Chemical element with atomic number 59 (Pr)	Physical sciences	0	0	0
805		Precambrian	History of Earth 4600–539 million years ago	Physical sciences	0	0	0
806		Precipitation	Condensed water vapor that falls from clouds	Physical sciences	0	0	0
807		Pressure	Force distributed over an area	Physical sciences	0	0	0
808		Primary color	Fundamental color in color mixing	Physical sciences	0	0	0
809		Principle of relativity	Physics principle	Physical sciences	0	0	0
810		Procyon	Star in the constellation Canis Minor	Physical sciences	0	0	0
811		Promethium	Chemical element with atomic number 61 (Pm)	Physical sciences	0	0	0
812		Propane	Hydrocarbon compound (C3H8)	Physical sciences	0	0	0
813		Properties of water	Physical and chemical properties of pure water	Physical sciences	0	0	0
814		Propylene	Chemical compound (CH3CH=CH2)	Physical sciences	0	0	0
815		Protactinium	Chemical element with atomic number 91 (Pa)	Physical sciences	0	0	0
816		Proton	Subatomic particle with positive charge	Physical sciences	0	0	0
817		Protostar	Early stage in the process of star formation	Physical sciences	0	0	0
818		Pulsar	Type of neutron star with beams of radiation	Physical sciences	0	0	0
819		Purple	Range of colors with the hues between blue and red	Physical sciences	0	0	0
820		Pyroxene	Group of inosilicate minerals with single chains of silica tetrahedra	Physical sciences	0	0	0
821		Qualitative research	Form of research	Physical sciences	0	0	0
822		Quantitative research	All procedures for the numerical representation of empirical facts	Physical sciences	0	0	0
823		Quantum chemistry	Chemistry based on quantum physics	Physical sciences	0	0	0
824		Quantum chromodynamics	Theory of the strong nuclear interactions	Physical sciences	0	0	0
825		Quantum electrodynamics	Quantum field theory of electromagnetism	Physical sciences	0	0	0
826		Quantum entanglement	Physics phenomenon	Physical sciences	0	0	0
827		Quantum field theory	Theoretical framework in physics	Physical sciences	0	0	0
828		Quantum gravity	Description of gravity using discrete values	Physical sciences	0	0	0
829		Quantum mechanics	Description of physical properties at the atomic and subatomic scale	Physical sciences	0	0	0
830		Quantum tunnelling	Quantum mechanical phenomenon	Physical sciences	0	0	0
831		Quark	Elementary particle, fundamental constituent of matter	Physical sciences	0	0	0
832		Quartz	Mineral made of silicon and oxygen	Physical sciences	0	0	0
833		Quasar	Active galactic nucleus (AGN) containing a supermassive black hole	Physical sciences	0	0	0
834		Quaternary	Third and current period of the Cenozoic Era, from 2.58 million years ago to the present	Physical sciences	0	0	0
835		RGB color model	Color model based on red, green and blue	Physical sciences	0	0	0
836		Radian	SI derived unit of angle	Physical sciences	0	0	0
837		Radiation	Waves or particles moving through space	Physical sciences	0	0	0
838		Radical (chemistry)	Atom, molecule, or ion that has an unpaired valence electron; typically highly reactive	Physical sciences	0	0	0
839		Radio galaxy	Type of active galaxy that is very luminous at radio wavelengths	Physical sciences	0	0	0
840		Radio wave	Type of electromagnetic radiation	Physical sciences	0	0	0
841		Radioactive decay	Emissions from unstable atomic nuclei	Physical sciences	0	0	0
842		Radium	Chemical element with atomic number 88 (Ra)	Physical sciences	0	0	0
843		Radon	Chemical element with atomic number 86 (Rn)	Physical sciences	0	0	0
844		Rain	Form of precipitation	Physical sciences	0	0	0
845		Rainbow	Meteorological phenomenon	Physical sciences	0	0	0
846		Rainforest	Type of forest with high rainfall	Physical sciences	0	0	0
847		Rapids	River section with increased velocity and turbulence	Physical sciences	0	0	0
848		Reaction mechanism	Any model explaining a chemical reaction	Physical sciences	0	0	0
849		Red	Primary color	Physical sciences	0	0	0
850		Red giant	Type of large cool star	Physical sciences	0	0	0

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