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10,033 things · 1,900 votes cast · cast a vote
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| # | Thing | Description | Topic | Up/Down/Net | Score ▼ | |
|---|---|---|---|---|---|---|
| 901 |  | Soil formation | Process of soil formation | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 902 |  | Soil science | Study of soil as a natural resource on the surface of Earth | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 903 |  | Solar System | Planetary system consisting of the Sun and objects orbiting it | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 904 |  | Solar eclipse | Event wherein the Sun is obscured by the Moon | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 905 |  | Solar wind | Stream of charged particles from the Sun | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 906 |  | Solid | State of matter | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 907 | Solid mechanics | Branch of mechanics concerned with solid materials and their behaviors | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 908 |  | Sound | Audible vibration that travels via pressure waves in matter | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 909 |  | Space | Framework of distances and directions | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 910 |  | Spacetime | Mathematical model combining space and time | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 911 |  | Special relativity | Theory of interwoven space and time by Albert Einstein | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 912 |  | Spectroscopy | Study involving matter and electromagnetic radiation | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 913 |  | Speed | Magnitude of velocity | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 914 |  | Speed of light | Speed of electromagnetic waves | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 915 |  | Spiral galaxy | Class of galaxy that has spiral structures extending from their cores | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 916 |  | Spring (hydrology) | Point at which water emerges from an aquifer to the surface | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 917 |  | Spring (season) | One of the Earth's four temperate seasons | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 918 |  | Stainless steel | Steel alloy resistant to corrosion | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 919 |  | Standard Model | Theory of forces and subatomic particles | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 920 |  | Standard atmosphere (unit) | Unit of pressure defined as 101325 Pa | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 921 |  | Star formation | Gravitational process studied in astronomy | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 922 |  | Star system | Small number of stars that orbit each other | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 923 |  | Starburst galaxy | Galaxy undergoing an exceptionally high rate of star formation | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 924 |  | State of matter | Forms which matter can take | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 925 | Statics | Branch of mechanics concerned with balance of forces in nonmoving systems | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 926 | Statistical mechanics | Physics of many interacting particles | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 927 |  | Steel | Alloy of iron and carbon | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 928 |  | Stellar black hole | Black hole formed by a collapsed star | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 929 |  | Stellar classification | Classification of stars based on spectral properties | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 930 |  | Stellar kinematics | Study of the movement of stars | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 931 |  | Stellar magnetic field | Magnetic field generated inside a star | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 932 |  | Stellar structure | Structure of stars | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 933 |  | Steppe | Ecoregion of plain grasslands without trees | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 934 |  | Steradian | SI derived unit of solid angle | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 935 |  | Storm | Disturbed state of an astronomical body's atmosphere | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 936 |  | Strait | Waterway connecting two bodies of water | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 937 |  | Stratigraphy | Study of rock layers and their formation | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 938 | Strength of materials | Physical sciences | +0 / -0 / 0 | 0.500000 | ||
| 939 |  | Stress (mechanics) | Physical quantity that expresses internal forces in a continuous material | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 940 | String theory | Theory of subatomic structure | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 941 |  | Strong interaction | Binding of quarks in subatomic particles | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 942 |  | Strontium | Chemical element with atomic number 38 (Sr) | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 943 |  | Subatomic particle | Particle smaller than an atom | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 944 | Substitution reaction | Chemical reaction in which one functional group in a compound is replaced by another | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 945 |  | Sulfate | Anion of sulfur with 4 oxygen atoms | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 946 |  | Sulfur | Chemical element with atomic number 16 (S) | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 947 |  | Sulfuric acid | Chemical compound (H2SO4) | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 948 |  | Summer | Hottest of the four temperate seasons | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 949 |  | Superconductivity | Electrical conductivity with exactly zero resistance | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 950 | | Supergiant | Type of star that is massive and luminous | Physical sciences | +0 / -0 / 0 | 0.500000 |
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