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| # | Thing | Description | Topic | For | Against | Net | |
|---|---|---|---|---|---|---|---|
| 351 |  | Extinction event | Rapid decrease in Earth's biodiversity | Physical sciences | 0 | 0 | 0 |
| 352 | Extraterrestrial life | Life that does not originate on Earth | Physical sciences | 0 | 0 | 0 | |
| 353 |  | Extratropical cyclone | Type of cyclone | Physical sciences | 0 | 0 | 0 |
| 354 |  | Fahrenheit | Temperature scale | Physical sciences | 0 | 0 | 0 |
| 355 |  | Farad | SI unit of electric capacitance | Physical sciences | 0 | 0 | 0 |
| 356 |  | Fatigue (material) | Initiation and propagation of cracks in a material due to cyclic loading | Physical sciences | 0 | 0 | 0 |
| 357 |  | Fault (geology) | Fracture or discontinuity in displaced rock | Physical sciences | 0 | 0 | 0 |
| 358 |  | Feldspar | Group of rock-forming minerals | Physical sciences | 0 | 0 | 0 |
| 359 |  | Fermion | Type of subatomic particle | Physical sciences | 0 | 0 | 0 |
| 360 |  | Ferromagnetism | Mechanism by which materials form into and are attracted to magnets | Physical sciences | 0 | 0 | 0 |
| 361 |  | Field (physics) | Physical quantities taking values at each point in space and time | Physical sciences | 0 | 0 | 0 |
| 362 |  | Field research | Collection of information outside a laboratory, library or workplace setting | Physical sciences | 0 | 0 | 0 |
| 363 |  | Filtration | Process that separates solids from fluids | Physical sciences | 0 | 0 | 0 |
| 364 |  | Fire | Rapid and hot oxidation of a material | Physical sciences | 0 | 0 | 0 |
| 365 |  | Fjord | Long, narrow inlet with steep sides or cliffs, created by glacial activity | Physical sciences | 0 | 0 | 0 |
| 366 |  | Flight | Movement of an object through air | Physical sciences | 0 | 0 | 0 |
| 367 |  | Flood | Water overflow submerging usually-dry land | Physical sciences | 0 | 0 | 0 |
| 368 |  | Floodplain | Land adjacent to a water body which is flooded during periods of high water | Physical sciences | 0 | 0 | 0 |
| 369 |  | Fluid dynamics | Aspects of fluid mechanics involving fluid flow | Physical sciences | 0 | 0 | 0 |
| 370 | Fluid mechanics | Branch of physics | Physical sciences | 0 | 0 | 0 | |
| 371 |  | Fluorescence | Emission of light by a substance that has absorbed light | Physical sciences | 0 | 0 | 0 |
| 372 |  | Fluorine | Chemical element with atomic number 9 (F) | Physical sciences | 0 | 0 | 0 |
| 373 | Flux | Mathematical concept applicable to physics | Physical sciences | 0 | 0 | 0 | |
| 374 |  | Foam | Form of matter | Physical sciences | 0 | 0 | 0 |
| 375 | Focal length | Measure of how strongly an optical system converges or diverges light | Physical sciences | 0 | 0 | 0 | |
| 376 |  | Focus (optics) | Point at which light rays converge | Physical sciences | 0 | 0 | 0 |
| 377 |  | Fog | Atmospheric phenomenon | Physical sciences | 0 | 0 | 0 |
| 378 |  | Fold (geology) | Stack of originally planar surfaces | Physical sciences | 0 | 0 | 0 |
| 379 | Foot (unit) | Customary unit of length | Physical sciences | 0 | 0 | 0 | |
| 380 |  | Force | Influence that can change motion of an object | Physical sciences | 0 | 0 | 0 |
| 381 |  | Forest | Dense collection of trees covering a relatively large area | Physical sciences | 0 | 0 | 0 |
| 382 |  | Formaldehyde | Organic compound (H–CHO); simplest aldehyde | Physical sciences | 0 | 0 | 0 |
| 383 |  | Formation and evolution of the Solar System | Physical sciences | 0 | 0 | 0 | |
| 384 | Frame of reference | Abstract coordinate system | Physical sciences | 0 | 0 | 0 | |
| 385 | Francium | Chemical element with atomic number 87 (Fr) | Physical sciences | 0 | 0 | 0 | |
| 386 |  | Freezing | Phase transition of liquid to solid | Physical sciences | 0 | 0 | 0 |
| 387 |  | Friction | Force resisting sliding motion | Physical sciences | 0 | 0 | 0 |
| 388 |  | Frost | Coating or deposit of ice | Physical sciences | 0 | 0 | 0 |
| 389 | Fundamental interaction | Most basic type of physical force | Physical sciences | 0 | 0 | 0 | |
| 390 |  | Gadolinium | Chemical element with atomic number 64 (Gd) | Physical sciences | 0 | 0 | 0 |
| 391 |  | Gain (electronics) | Ability of a circuit to increase the power or amplitude of a signal | Physical sciences | 0 | 0 | 0 |
| 392 |  | Galactic Center | Rotational center of the Milky Way galaxy | Physical sciences | 0 | 0 | 0 |
| 393 |  | Galaxy | System of stars and interstellar matter | Physical sciences | 0 | 0 | 0 |
| 394 |  | Galaxy formation and evolution | Subfield of cosmology | Physical sciences | 0 | 0 | 0 |
| 395 |  | Galaxy groups and clusters | Largest known gravitationally bound object in universe; aggregation of galaxies | Physical sciences | 0 | 0 | 0 |
| 396 |  | Galaxy morphological classification | System for categorizing galaxies based on appearance | Physical sciences | 0 | 0 | 0 |
| 397 |  | Gallium | Chemical element with atomic number 31 (Ga) | Physical sciences | 0 | 0 | 0 |
| 398 |  | Gallon | Units of volume | Physical sciences | 0 | 0 | 0 |
| 399 |  | Gamma ray | Penetrating form of electromagnetic radiation | Physical sciences | 0 | 0 | 0 |
| 400 |  | Gamma-ray burst | Flash of gamma rays from a distant galaxy | Physical sciences | 0 | 0 | 0 |
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