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10,033 things · 1,900 votes cast · cast a vote
All | Arts | Biology and health sciences | Everyday life | Geography | History | Mathematics | People | Philosophy and religion | Physical sciences | Society and social sciences | Technology
| # | Thing | Description | Topic | Up/Down/Net | Score ▼ | |
|---|---|---|---|---|---|---|
| 1001 |  | Tuff | Rock consolidated from volcanic ash | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1002 |  | Tungsten | Chemical element with atomic number 74 (W) | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1003 | Turbulence | Motion characterized by chaotic changes in pressure and flow velocity | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 1004 |  | Ultimate fate of the universe | Theories about the end of the universe | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1005 |  | Ultrasound | Sound waves with frequencies above the human hearing range | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1006 |  | Ultraviolet | Form of electromagnetic radiation | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1007 |  | Uncertainty principle | Foundational principle in quantum physics | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1008 |  | Unit of measurement | Quantity standard | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1009 |  | United States customary units | Units of measurement commonly used in the U.S. | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1010 |  | Universe | Everything in space and time | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1011 |  | Uranium | Chemical element with atomic number 92 (U) | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1012 | Urea | Organic compound | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 1013 |  | Ursa Major | Constellation in the northern sky | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1014 |  | Ursa Minor | Constellation in the northern celestial hemisphere | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1015 | Valence bond theory | One of two foundational theories of quantum chemistry | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 1016 |  | Valley | Low area between hills, often with a river running through it | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1017 |  | Vanadium | Chemical element with atomic number 23 (V) | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1018 |  | Vapor | Substances in the gas phase at a temperature lower than its critical point | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1019 |  | Variable star | Star whose brightness fluctuates, as seen from Earth | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1020 |  | Vega | Brightest star in the constellation Lyra | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1021 |  | Velocity | Speed and direction of a motion | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1022 |  | Venus | Second planet from the Sun | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1023 |  | Virgo Cluster | Galaxy cluster in the constellation Virgo | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1024 |  | Virgo Supercluster | Historical local supercluster home to the Milky Way | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1025 |  | Viscosity | Resistance of a fluid to shear deformation | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1026 |  | Volcano | Rupture in a planet's crust where material escapes | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1027 |  | Volt | SI derived unit of voltage | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1028 |  | Voltage | Difference in electric potential between two points in space | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1029 |  | W and Z bosons | Bosons that mediate the weak interaction | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1030 |  | Walker circulation | Theorerical model of air flow in the atmosphere | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1031 |  | Water | Chemical compound of hydrogen and oxygen | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1032 |  | Water cycle | Biogeochemical cycle for movement of water on Earth | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1033 |  | Water vapor | Gaseous phase of water | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1034 |  | Waterfall | Point in a river or brook where water flows over a vertical drop | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1035 |  | Watt | SI derived unit of power | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1036 |  | Wave | Dynamic disturbance in a medium or field | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1037 |  | Wave equation | Differential equation for the description of waves or standing wave | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1038 |  | Wavelength | Distance over which a wave's shape repeats | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1039 | | Weak interaction | Interaction between subatomic particles | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1040 |  | Weather | Short-term state of the atmosphere | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1041 |  | Weather forecasting | Application of science and technology | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1042 |  | Weather front | Boundary separating two masses of air of different densities | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1043 |  | Weathering | Deterioration of rocks and minerals through exposure to the elements | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1044 |  | Weighing scale | Instrument to measure the weight of an object | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1045 |  | Weight | Force on a mass due to gravity | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1046 |  | Wet season | Yearly period of high rainfall | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1047 |  | Whirlpool Galaxy | Galaxy in the constellation Canes Venatici | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1048 |  | White | Lightest color | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1049 |  | White dwarf | Stellar core remnant | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1050 |  | Wildfire | Uncontrolled fire in forests or open spaces | Physical sciences | +0 / -0 / 0 | 0.500000 |
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