Science is one of Jeopardy!'s largest and most consistent topics, approximately 4,900 clues and 67 Final Jeopardy appearances spanning from 1984 to 2026. It skews heavily toward Double Jeopardy (~3,150 DJ vs ~1,680 J clues), reflecting the show's treatment of science as a serious, higher-difficulty topic.
The bare "SCIENCE" category alone accounts for 1,636 clues; one of the largest single-word categories in the show. Other major feeders include GENERAL SCIENCE (289), PHYSICAL SCIENCE (279), -OLOGIES (210), SCIENCE CLASS (113), and SCIENCE FICTION (110). Gender-specific categories are notable: MEN OF SCIENCE (69) and SCIENCE GUYS (55) appear more than three times as often as WOMEN IN SCIENCE (30) and WOMEN OF SCIENCE (11).
The answer pool clusters into clear domains: elements (carbon, hydrogen, oxygen, helium, lithium, iron, mercury, tin, silver, etc.), physics concepts (gravity, inertia, pressure, friction, kinetic energy), astronomy (Saturn, Jupiter, Mars, Venus, the Sun), scientists (Galileo, Newton, Pasteur, Einstein, Darwin), and -ology words (anthropology, meteorology, seismology, paleontology, ecology).
The gimmes: Pasteur (11, 100%), the mantle (10, 100%), absolute zero (10, 100%), chlorophyll (9, 100%), photosynthesis (8, 100%), methane (7, 100%), meteorology (7, 100%), magma (7, 100%), lightning (7, 100%), kinetic (7, 100%), earthquakes (7, 100%), Einstein (7, 100%), plasma (7, 100%), tin (7, 100%), quarks (6, 100%), nitrogen (6, 100%), paleontology (6, 100%), the core (6, 100%).
The stumper zone: order (5 appearances, 80% wrong, taxonomic classification trips everyone up), ammonia (7, 71%), natural selection (6, 67%), fungi (5, 60%), uranium (6, 50%), protons (8, 50%), infrared (6, 50%), fission (6, 50%), ultraviolet (9, 44%), mercury (9, 44%), lithium (10, 40%), Piltdown Man (5, 40%), Dmitri Mendeleev (5, 40%).
Study strategy: Elements are the backbone: they make up roughly 25% of all top answers. Learn each element's symbol, Latin/Greek origin, and distinguishing property. Then master the "Big 5" scientists (Galileo, Newton, Pasteur, Einstein, Darwin) and their key discoveries. For Final Jeopardy, focus on etymology; the origin of scientific terms dominates FJ. Science FJ also loves cross-domain clues connecting science to literature, history, and pop culture.
The #2 most-tested Science answer, but surprisingly difficult at only 65% correct; it comes up in harder DJ clues where contestants overthink. The key hooks: organic chemistry is the chemistry of carbon compounds. The black char on burnt toast is carbon. Anthracite coal is almost entirely carbon. Diamond and graphite are both forms of carbon. Its name comes from the Latin for "charcoal." In 1961 an isotope of carbon (carbon-12) replaced oxygen as the standard for determining atomic weight. Carbon nanotubes (CNTs) appear in modern materials clues.
A near-perfect gimme. The lightest element, making up the Sun's fuel via fusion. Cavendish called it "inflammable air." Deuterium is "heavy hydrogen." The "H" in pH stands for hydrogen. The Hindenburg disaster is the go-to cultural reference. In the chemical formula for propane (C₃H₈), H is hydrogen.
The most abundant element in Earth's crust (not in the atmosphere, that's nitrogen). Plants produce it through photosynthesis. A Bunsen burner tests for it. Anaerobic organisms don't need it. Cyanosis (bluish skin) results from lack of it.
Deceptively hard at only 53% correct despite 15 appearances. Named for Helios, the Greek sun god, first detected in the Sun's atmosphere in 1868. The second most abundant element in the universe. A noble gas with the lowest boiling point of any element. Alters the voice when inhaled. Two FJ appearances: "From name of Greek sun god, it is the 2nd most abundant element in the universe" (1985) and "First detected in the Sun's atmosphere in 1868, it got its name from an old word for sun" (2023).
The lightest metal and the lightest solid element. Used in batteries and as a mood stabilizer in psychiatry. Element #3 on the periodic table.
Iron (10, 80%), The most abundant element in the Earth as a whole (by mass). Its chemical symbol Fe comes from the Latin "ferrum."
Mercury (9, 56%), Tricky because clues alternate between the element and the planet. The only metal that's liquid at room temperature. Named for the Roman messenger god. Symbol Hg from "hydrargyrum" (liquid silver).
Tin (7, 100%), Perfect gimme. Symbol Sn from the Latin "stannum." Used in bronze (an alloy with copper).
Silver (7, 71%), Symbol Ag from the Latin "argentum" (hence Argentina). The best conductor of electricity among all elements.
Uranium (6, 50%), A stumper. Named after the planet Uranus (just as titanium was named for the Titans). Element 92. Key to nuclear fission.
Zinc (6, 67%), Essential trace mineral. Used in galvanization (coating iron/steel to prevent rust).
Nitrogen (6, 100%), A gimme. Makes up about 78% of Earth's atmosphere. Liquid nitrogen freezes things dramatically.
Neon (6, 83%), Noble gas used in illuminated signs. Its name comes from the Greek "neos" (new).
Watch out: Carbon (35% stumper rate despite being answer #2), helium (47% stumper), and uranium (50% stumper) are all far harder than you'd expect. When a clue describes something as "the lightest," think through whether it means lightest element (hydrogen), lightest metal (lithium), or lightest noble gas (helium). When a clue mentions the Sun, consider helium (named for it) before hydrogen.
The single most-tested Science answer. The clue angles cycle through: the force of attraction between masses, what keeps the Moon in orbit, why objects fall at 32 ft/s², the weakest of the four fundamental forces, Newton's 1687 formulation, and "center of gravity" demonstrations. The FJ clue (2009): "According to Chuck Jones, whenever possible, this force of nature was to be Wile E. Coyote's greatest enemy." Know that gravity is the weakest of the four fundamental forces; this surprises contestants.
Newton's first law: an object in motion stays in motion, an object at rest stays at rest. The tendency of a body to resist changes in its state of motion.
Boyle's Law (pressure and volume are inversely proportional). Measured in atmospheres, bars, millibars, pascals. Pascal's Law governs hydraulics. An isobaric process occurs at constant pressure.
The force that opposes motion between surfaces. Nearly a gimme. Static friction is greater than kinetic friction.
A stumper. The study of heat and energy transfer. The three laws of thermodynamics. Entropy increases in a closed system (second law). Absolute zero is the temperature at which molecular motion ceases.
A perfect gimme. 0 Kelvin, −273.15°C, −459.67°F. The theoretical temperature at which all molecular motion stops.
A gimme. Kinetic energy is the energy of motion. From Greek "kinetikos" meaning "of motion."
Fission (7, 43%), Major stumper. Nuclear fission splits atoms; fusion combines them. The term was borrowed from biology (cell division) in 1939. FJ clue: "This biological term for cell division was borrowed in 1939 to describe a form of energy release." Know the fission/fusion distinction cold.
Protons (8, 50%), Harder than electrons (77% correct). Positively charged subatomic particles in the nucleus. The number of protons defines the element (atomic number).
Natural selection (7, 29%), The #2 stumper after "order." Darwin's mechanism of evolution, organisms with favorable traits survive and reproduce. Contestants may overthink this and guess "evolution" or "survival of the fittest."
Black holes (7, 43%), Physicist John Wheeler coined the term as "a faster way to say 'completely collapsed objects'" (2024 FJ clue). Regions where gravity is so strong that nothing, not even light, can escape.
The mantle (10, 100%), A perfect gimme. Earth's thickest layer, between the crust and the core. The Mohorovičić discontinuity (Moho) marks the boundary between crust and mantle. The D″ (D-double-prime) layer is the lowest part of the mantle.
The core (6, 100%), Another gimme. Earth's innermost layer, mostly iron and nickel.
Magma (7, 100%), Molten rock beneath the surface. When it reaches the surface, it becomes lava.
Earthquakes (7, 100%), A gimme. Measured on the Richter scale (magnitude) and Modified Mercalli scale (intensity). Seismology is the study of earthquakes.
Igneous (10, 80%), One of the three rock types (igneous, sedimentary, metamorphic). Formed from cooled magma or lava. From Latin "ignis" (fire).
Sedimentary (5, 60%), A stumper among rock types. Formed from accumulated sediments, sandstone, limestone, shale.
Watch out: Natural selection (71% wrong), fission (57% wrong), and protons (50% wrong) are all major stumpers. The fission/fusion distinction is critical, "fission" splits (think "fissure"), "fusion" joins (think "fuse"). For natural selection vs. evolution: evolution is the result, natural selection is the mechanism.
Saturn (20, 75%), The ringed planet. Cassini discovered the gap in Saturn's rings (Cassini Division). Titan is its largest moon; the only moon in the solar system with a thick atmosphere. The second-largest planet.
Jupiter (20, 85%), The largest planet. The Great Red Spot is a giant storm. The four Galilean moons: Io, Europa, Ganymede, Callisto, discovered by Galileo in 1610. Juno is the spacecraft currently studying it. Europa likely has a subsurface ocean. FJ (2025): "4 of these discovered in the early 1600s were given the names of lovers of a mythological deity."
Mars (12, 83%), Schiaparelli observed "canali" (channels) in 1877, mistranslated as "canals." The farthest terrestrial planet from the Sun. Areology is the study of Mars (from Ares, Greek god of war).
Venus (9, 78%), The hottest planet (runaway greenhouse effect). Earth's "sister planet" in size. Rotates backward (retrograde).
Uranus (8, 75%), Discovered by William Herschel in 1781. Rotates on its side. FJ: Martin Klaproth named uranium after Uranus and titanium after the Titans.
Mercury (8, 88%), Smallest planet, closest to the Sun. Named for the Roman messenger god (fastest planet in orbit).
Pluto (7, 86%), Demoted from planet status in 2006 by the IAU. Now classified as a dwarf planet.
The Sun (11, 82%), Powers itself through hydrogen-to-helium fusion. Heliology is the study of the Sun. The most massive object in the solar system. Aphelion is the point when Earth is farthest from the Sun.
The Big Bang (6, 83%), FJ (2005): "Sky & Telescope magazine's contest to replace this term for a single event got 13,000 entries, but chose none." The prevailing cosmological model for the origin of the universe.
A comet (7, 100%), A gimme. FJ (2023): Halley's Comet, "A craft that visited it was named for Giotto, based on the story that 680 years earlier, the painter depicted it as the Star of Bethlehem."
Astrology (8, 75%), Don't confuse with astronomy. The pseudoscience of predicting events from celestial positions. Occasionally tested because students know "astronomy" and second-guess themselves.
Watch out: Saturn (25% wrong) is harder than Jupiter (15% wrong), contestants confuse ring details and moon names. When a clue mentions "canali" or channels, think Mars, not Venice.
Galileo (22, 91%), The most-tested scientist in the Science topic. Key hooks: improved the telescope in 1609 and turned it to the heavens; discovered Jupiter's four largest moons (1610); supported Copernicus's heliocentric model; forced to recant before the Inquisition (1633); famous (possibly apocryphal) experiments with falling bodies at the Leaning Tower of Pisa; "Eppur si muove" ("And yet it moves"). The Galileo spacecraft visited Jupiter in the 1990s.
Newton (16, 88%), Three laws of motion, universal gravitation (published in Principia in 1687), co-invented calculus, studied optics and light. Buried in Westminster Abbey. Made his greatest discoveries during the plague years (1665–1666) when Cambridge closed. The apple story is famous but likely embellished.
Pasteur (11, 100%), A perfect gimme. Founded microbiology and immunology. Disproved spontaneous generation. Developed pasteurization (for the wine industry, not milk, a common misconception). Studied silkworm diseases. Developed the rabies vaccine. FJ (2005): "With Napoleon III's support, a physiological chemistry lab was created for him at the Ecole Normale Superieure."
Einstein / Albert Einstein (17 combined, ~87%), Relativity (special and general), E=mc², the photoelectric effect (which won his Nobel Prize; not relativity), Brownian motion. Time dilation, spacetime curvature. Published his "annus mirabilis" papers in 1905.
Darwin (8, 88%), Theory of evolution by natural selection. On the Origin of Species (1859). The voyage of the Beagle. FJ: "Appropriately, this word from Latin for 'unfold' isn't in the first edition of 'Origin of Species', but does appear in later editions" answer: evolution.
Stephen Hawking (8, 88%), A Brief History of Time, black hole radiation (Hawking radiation), ALS diagnosis, Lucasian Professor at Cambridge (same chair as Newton).
Archimedes (10, 70%), "Eureka!" and the bathtub discovery of displacement. The Archimedes screw for lifting water. Principle of buoyancy.
George Washington Carver (7, 71%), Pioneer in agricultural science, especially uses for peanuts, sweet potatoes, and soybeans. Born into slavery.
Copernicus (2 FJ appearances), Heliocentric model. FJ (2010): "The IUPAC named an element for this man born in 1473." FJ (2016): "The symbols for 6 chemical elements spell out his name" Co, P, Er, Ni, Cu, S.
Marie Curie (2 FJ appearances), First person to win two Nobel Prizes (Physics 1903, Chemistry 1911). Polish-born. Her papers are still radioactive, stored in lead boxes. FJ (1985, 2024).
Joseph Priestley, Invented carbonated water as a byproduct of investigating the chemistry of air. Credited with discovering oxygen. FJ (2000).
Dmitri Mendeleev (5, 40%), A stumper. Created the periodic table of elements (1869). Predicted undiscovered elements based on gaps.
Anthropology (11, 73%), The study of human cultures and societies.
Meteorology (7, 100%), A gimme. The study of weather and atmospheric phenomena.
Seismology (6, 83%), The study of earthquakes. Named from Greek "seismos" (shaking).
Paleontology (6, 100%), A gimme. The study of ancient life through fossils. FJ (2023): "Sue" the paleontologist who in 1990 discovered a T. rex in South Dakota.
Ecology (7, 71%), The study of organisms and their environment. From Greek "oikos" (house).
Watch out: Mendeleev (40% wrong) is consistently hard, contestants know the periodic table but can't recall who created it. Archimedes (30% wrong) trips people when clues don't mention the bathtub. Natural selection vs. evolution: "evolution" is Darwin's broader theory; "natural selection" is the specific mechanism, Jeopardy tests both, and contestants confuse them.
The single most common FJ angle for Science is asking where scientific terms come from: - Atom: In medieval England, meant the smallest unit of time (1/376 of a minute); didn't refer to matter until the 16th century - Entropy: Coined in the 1860s to "sound a bit like energy"; denotes irreversible dispersion of energy - Isotope: Dr. Margaret Todd coined it; from Greek for "equal" and "place" - Satellite: In 1611 Kepler used this word from Latin for "attendant" to describe Galileo's discoveries - Chaos: The word "gas" (coined by chemist van Helmont) comes from this Greek word meaning "unformed mass" - Chromosomes: Named from Greek for "color" and "body" because they become visible when stained - Robotics: Asimov coined the term in 1941, expanding on a word created by Czech playwright Karel Čapek - Fission: Borrowed from biology (cell division) in 1939 for nuclear energy release - Evolution: From Latin for "unfold"; not in the first edition of Origin of Species
| Answer | Wrong % | What trips contestants up |
|---|---|---|
| order | 80% | Taxonomic rank; not an intuitive answer |
| ammonia | 71% | Chemical compound, contestants guess other chemicals |
| natural selection | 67% | Confused with "evolution" or "survival of the fittest" |
| fungi | 60% | Kingdom classification; not plant, not animal |
| uranium | 50% | Can't recall element name from clue description |
| protons | 50% | Confused with electrons or neutrons |
| infrared | 50% | Confused with ultraviolet, contestants mix up the spectrum |
| fission | 50% | Confused with fusion; the split/join distinction |
| ultraviolet | 44% | Same confusion as infrared, from the other direction |
| mercury | 44% | Ambiguity: element vs. planet vs. Roman god |
| lithium | 40% | "Lightest metal" contestants guess aluminum or sodium |
| Piltdown Man | 40% | Famous hoax, contestants can't recall the name |
| Dmitri Mendeleev | 40% | Created the periodic table but name is hard to recall |
| carbon | 35% | Appears in hard DJ clues; contestants overthink it |
| water | 36% | Too obvious-seeming; contestants second-guess themselves |
| inertia | 30% | Confused with momentum or friction |
Strategy for stumpers: Many Science stumpers come from second-guessing. When a clue describes a fundamental concept (gravity, carbon, water, natural selection), trust your first instinct; the "obvious" answer is usually correct. For spectrum confusion (infrared vs. ultraviolet), remember: infra = below (below red = longer wavelengths, heat), ultra = beyond (beyond violet = shorter wavelengths, sunburn). For fission vs. fusion: fission = fissure = split; fusion = fuse = join.
Memorize these and recognize 10.1% of all Science clues.
| # | Answer | Count | Sample Clue |
|---|---|---|---|
| 1 | hydrogen | 23 | A tokamak plasma nuclear reactor superheats isotopic nuclei of this element so that they fuse, releasing energy |
| 2 | gravity | 21 | At the Earth's surface, this force produces acceleration of about 32 feet per second per second |
| 3 | Galileo | 18 | In 1589 he began experimenting in Pisa with falling objects using inclined planes to slow the rate of descent |
| 4 | carbon | 18 | Graphite is a soft form of this element |
| 5 | Sir Isaac Newton | 16 | A rocket's thrust may be measured in units named for this man whose laws of motion explain rocketry |
| 6 | Jupiter | 15 | Carpo, Kale & Eirene are 3 of the 79 known moons orbiting this planet |
| 7 | carbon dioxide | 15 | Add 4 tbsp, vinegar & 3 tbsp. baking soda to a glass of water & this gas will make raisins bounce in it |
| 8 | chromosomes | 14 | A zygote has the full or diploid number of these |
| 9 | the Sun | 14 | Heliology is the study of light from this source |
| 10 | Saturn | 13 | In 1672, Cassini discovered Rhea, the second-largest moon of this planet, now discover Rhea for yourself via the Cassini spacecraft |
| 11 | oxygen | 13 | Nitrogen makes up around 78% of the atmosphere; this gas, only about 20% |
| 12 | Albert Einstein | 13 | In 1905 this way cool scientist published his special theory of relativity |
| 13 | Water | 12 | The Earth is the only planet in our solar system to have 2/3 of its surface covered by this |
| 14 | Mercury | 12 | CFLs, compact fluorescent lamps, light up by exciting atoms of this silver-colored element |
| 15 | static electricity | 12 | This can build up after a good hair brushing, & when you remove a wool hat, it can make your hair stand on end |
| 16 | Mars | 11 | Areology is the observation & study of this planet |
| 17 | electrons | 11 | In the body, free radicals are atoms that are unstable & can damage cells by stealing one of these particles from nearby molecules |
| 18 | light | 10 | By definition, bioluminescence is the production of this by living organisms |
| 19 | igneous | 10 | Of the 3 main classes of rock, this one is further divided into plutonic & volcanic types |
| 20 | Uranium | 9 | It was an atom of this element that Otto Hahn split in 1938 |
| 21 | Pasteur | 9 | He had a pretty good 19th century run, including saving France's beer, wine & silk industries |
| 22 | lead | 9 | One of the heaviest of metals, it's often used in alloys called Babbitt metals to make bearings |
| 23 | helium | 9 | It has the lowest boiling point of any element, -452 degrees Fahrenheit |
| 24 | an electron | 9 | Physicist J.J. Thomson discovered this subatomic particle in 1897 |
| 25 | natural gas | 9 | This type of fossil fuel is primarily methane |
| 26 | Dmitri Mendeleev | 9 | Nobel, Lise Meitner & this man are the 3 non-Nobel Prize-winning scientists who have chemical elements named for them |
| 27 | tin | 8 | The Latin word for this element is stannum |
| 28 | pressure | 8 | The unit of measure for this force is the bar or millibar |
| 29 | iron | 8 | Binding energy binds a nucleus together; this abundant metallic element has the greatest & is the most stable |
| 30 | DNA | 8 | This 3-letter substance that carries the genetic code directs the production of RNA |
| 31 | coal | 8 | BTU is the stock symbol of Peabody Energy, which mines for this black stuff |
| 32 | Archimedes | 8 | This ancient Greek who loved the lever established statics, the study of a body at equilibrium |
| 33 | anthropology | 8 | At Brown Jessaca Leinaweaver, the chair of this department aims to study "humanity, past & present" |
| 34 | amber | 8 | When rubbed with a cloth, this yellow fossil resin becomes electrically charged |
| 35 | absolute zero | 8 | -273 Celsius |
| 36 | the mantle | 7 | The Mohorovicic Discontinuity is the boundary between the Earth's crust & this layer |
| 37 | seismology | 7 | Charles Richter taught this -ology at Caltech from 1937 to 1970 |
| 38 | rubber | 7 | Magid makes its A.R.C. insulating gloves from this natural material & they'll protect you up to 1,000 volts |
| 39 | quartz | 7 | In 1929 the application of crystals of this mineral allowed for electric timepieces |
| 40 | Psychology | 7 | William James' 1890 "The Principles of" this is considered a classic in the field |
| 41 | photosynthesis | 7 | In plants, light energy from the sun is converted into chemical energy via this process |
| 42 | meteorology | 7 | It's the study of the atmosphere & weather, not of shooting stars |
| 43 | metamorphic | 7 | Marble is classified as this type of rock because it changed from limestone due to heat & pressure |
| 44 | lithium | 7 | The atoms in your body are billions of years old; the hydrogen & this lightest metal may date to the Big Bang |
| 45 | inertia | 7 | ( Sarah demonstrates the clue in the science lab.) The sideways pull of the hoop won't generate enough friction to pull the cap along with it, so the ... |
| 46 | friction | 7 | There are static & kinetic types of this force on objects that are in contact with each other |
| 47 | stem cells | 7 | Korea's Woo-Suk Hwang faked a 2004 breakthrough in getting these mighty medical things from cloned embryos |
| 48 | Jean Foucault | 7 | In 1851 this "swinger" used a pendulum to show that the Earth rotates on its axis |
| 49 | Venus | 6 | Radar images taken by the Magellan spacecraft in the 1990s helped determine that this planet has around 85,000 volcanoes |
| 50 | Uranus | 6 | This outer planet discovered by Herschel has a 98-degree axial tilt & solstices 42 years apart |
These appear 8+ times. Memorize these first.
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