Science.

Overview

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.

Elements & Chemistry

Carbon

~23 clues · 65% correct

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.

Hydrogen

~20 clues · 95% correct

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.

Oxygen

~18 clues · 78% correct

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.

Helium

~15 clues · 53% correct

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).

Lithium

~10 clues · 60% correct

The lightest metal and the lightest solid element. Used in batteries and as a mood stabilizer in psychiatry. Element #3 on the periodic table.

Other Key Elements

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.

Physics & Earth Science

Gravity

~26 clues · 92% correct

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.

Inertia

~10 clues · 70% correct

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.

Pressure

~10 clues · 80% correct

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.

Friction

~9 clues · 89% correct

The force that opposes motion between surfaces. Nearly a gimme. Static friction is greater than kinetic friction.

Thermodynamics

~7 clues · 57% correct

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.

Absolute Zero

~10 clues · 100% correct

A perfect gimme. 0 Kelvin, −273.15°C, −459.67°F. The theoretical temperature at which all molecular motion stops.

Kinetic

~7 clues · 100% correct

A gimme. Kinetic energy is the energy of motion. From Greek "kinetikos" meaning "of motion."

Key Physics Concepts

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.

Earth Science

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.

Astronomy & Space

The Planets

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.

Other Space Topics

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.

Scientists & Discoveries

The Big Five

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.

Other Key Scientists

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.

The -Ologies (210 clues from this category alone)

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.

Final Jeopardy & Study Patterns

FJ Theme: Etymology & Word Origins

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

FJ Theme: Element Identification

• Helium: Named for the Greek sun god; 2nd most abundant element in the universe (2 FJ appearances)
• Californium: The only element named for a U.S. state
• Titanium: Klaproth named uranium after Uranus and this element after Uranus' children (the Titans)
• Tungsten: Its symbol (W) comes from its German name, Wolfram
• Iodine or helium: The two elements whose symbol is a pronoun (I and He)

FJ Theme: Scientist Biography

• Marie Curie: First person to win two Nobel Prizes; papers stored in lead boxes (2 FJ appearances)
• Copernicus: Element copernicium named for him; 6 element symbols spell his name (2 FJ appearances)
• Pasteur: Physiological chemistry lab at Ecole Normale Superieure
• Johannes Kepler: Wrote Somnium, an early work of science fiction (1634)
• Joseph Priestley: Invented carbonated water investigating the chemistry of air
• Alfred Nobel: "Perhaps my factories will put an end to war sooner than your congresses" (1891)
• Nikola Tesla and Thomas Edison: "The Life-Long Feud That Electrified the World"
• Luther Burbank: Autobiography Harvest of the Years (1927)
• Mary Leakey: Autobiography Disclosing The Past (1984)

FJ Theme: Science & Literature Crossovers

• Silent Spring: Keats' line "The sedge is withered from the lake, and no birds sing" inspired Rachel Carson's title
• The Lost World: Conan Doyle novel reissued with a Michael Crichton introduction
• The War of the Worlds: "The Falling Star" is Chapter 2 of this 1898 H.G. Wells novel
• Amazing Stories: Groundbreaking sci-fi magazine (1926) and TV anthology series (1985)
• Tribbles: Star Trek creatures inspired by rabbits multiplying in Australia
• A butterfly: In a 1952 Ray Bradbury story, a time traveler finds a dead one on his shoe

FJ Theme: Science Records & Firsts

• Gravity: Wile E. Coyote's greatest enemy (Chuck Jones)
• Halley's Comet: Giotto spacecraft named for painter who depicted it as Star of Bethlehem
• The Human Genome Project: 739MB file of As, Ts, Gs, and Cs; Clinton called it "the most wondrous map ever produced"
• Barometer: Robert Boyle renamed the Torricellian Tube
• Gyroscope: Jean Foucault made one to prove the Earth rotated
• Berkeley: Only U.S. city with an element named for it
• A vacuum: Refractive index of exactly 1.0000

The Stumper Reference

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.