| #9038, aired 2024-02-14 | THE AIR THAT I BREATHE $2000: The first noble gas discovered on Earth, it makes up almost 1% of standard dry air argon |
| #9000, aired 2023-12-22 | WEATHER IN THE BOOKSTORE $600: It comes "on little cat feet" according to Carl Sandburg, so let up on the gas fog |
| #8937, aired 2023-09-26 | NEXT STOP, VENUS $400: Venus' atmosphere is predominantly made up of this gas contributing to its high temperature carbon dioxide |
| #8931, aired 2023-09-18 | SCIENCE $800: It's the term for a device used to speed up particles so that they can be collided & studied; it's also another name for a car's gas pedal the accelerator |
| #8736, aired 2022-11-07 | BRIT BITS $800: In Britain you don't fill up your car with gas, you fill it with this 6-letter word petrol |
| #8290, aired 2020-11-27 | THE ATMOSPHERE $3,500 (Daily Double): Air pollution is made worse by the reactive type of this gas that makes up more than 3/4 of the atmosphere nitrogen |
| #8177, aired 2020-03-10 | WHAT IS THAT? $400: That's an empty reservoir for natural or coal this. An inner container rises up when it's full gas |
| #7931, aired 2019-02-18 | ANTEBELLUM $800: Leading up to WWII, Britain issued its citizens 40 million of these, to protect against a weapon cruelly used on WWI battlefields gas masks |
| #7878, aired 2018-12-05 | COMET $1000: (Jimmy of the Clue Crew shows an image of a comet on the monitor.) A comet often has two tails--one made of dust & one that glows blue & is made up of these electrically charged gas molecules ions (or plasma) |
| #7732, aired 2018-04-03 | THAT'S SO CLICHE $800: Meaning to exhaust one's energy & resources, it sounds like quickly using up a pre-industrial light source burning the candle at both ends |
| #7599, aired 2017-09-28 | DEEP UNDERGROUND $1000: Warming trends in Siberia have caused the springing up of tiny hills filled with marsh gas, mainly this deadly stuff methane |
| #7529, aired 2017-05-11 | ELEMENTARY $400: By volume this gas makes up about 78% of Earth's atmosphere nitrogen |
| #7404, aired 2016-11-17 | IT'S "LIT" $800: At home, these services, like water, gas & electricity really add up utilities |
| #7331, aired 2016-06-27 | FOOD & DRINK SCIENCE $2000: Green bananas produce this gas, which causes them to ripen; trapping the gas in a bag speeds up the process ethylene |
| #7254, aired 2016-03-10 | CARS $600: Some people are supercharged over this Chevy model that gets up to 380 miles on a full charge & a full tank of gas the Volt |
| #7174, aired 2015-11-19 | RIGHT NOW SCIENCE $800: Astronomers geared up for fireworks when the enormous gas cloud G2 passed Sagittarius A*, one of these a black hole |
| #7137, aired 2015-09-29 | "MM" BOP $1600: It's a gas made up of 1 part nitrogen & 3 parts hydrogen ammonia |
| #6953, aired 2014-12-03 | FROZEN $1,000 (Daily Double): Made up of ice, dust & gas, these space objects are sometimes referred to as "dirty snowballs" comets |
| #6726, aired 2013-12-09 | PERIODIC TABLE FOR 5 $400: This noble gas lights up the periodic table in between helium & argon neon |
| #6667, aired 2013-09-17 | POTENT POTABLES $1000: (Kathie Lee and Hoda give the clue.) French scientists say the best method of pouring champagne is down the side of the glass, which preserves up to twice as much of this gas, keeping the fizz in your bubbly carbon dioxide |
| #6665, aired 2013-08-02 | THE ELEMENTS $800 (Daily Double): Daniel Rutherford discovered this gas that makes up most of the atmosphere & called it "noxious air" nitrogen |
| #6662, aired 2013-07-30 | BALLOON TIME $2000: (Sarah of the Clue Crew shows us the clue in the lab with a balloon covering the neck of a bottle.) There's more than one way to blow up a balloon. When baking soda inside the balloon is released into a bottle of vinegar, it causes a bubbly chemical reaction and creates this gas that then inflates the balloon. carbon dioxide |
| #6604, aired 2013-05-09 | YOU'RE CRAZY, ME DRIVING? $1600: I always wait too long to fill up & spend another $20 replacing this part that gets clogged with gunk from the bottom of the tank fuel filter |
| #6567, aired 2013-03-19 | STARTS & ENDS WITH "A" $1600: This gas is made up of one part nitrogen & 3 parts hydrogen ammonia |
| #6428, aired 2012-07-25 | "GAS" UP $200: These protective devices typically feature a filter like charcoal to capture or alter potential poisons a gas mask |
| #6428, aired 2012-07-25 | "GAS" UP $400: It's a piece between machine parts to prevent fluid from escaping a gasket |
| #6428, aired 2012-07-25 | "GAS" UP $600: To manipulate events, as Charles Boyer does to Ingrid Bergman to make her think she's crazy gaslight |
| #6428, aired 2012-07-25 | "GAS" UP $800: Whelks are these animals whose name is from the Greek for "stomach foot" gastropods |
| #6428, aired 2012-07-25 | "GAS" UP $1000: The Romans called this historical French region Novempopulana Gascony |
| #6314, aired 2012-02-16 | FILLING UP AT THE GAS STATION $200: Grab me this brand of meat stick with a rhyming name; it's "made from stuff guys need" Slim Jim |
| #6314, aired 2012-02-16 | FILLING UP AT THE GAS STATION $400: I don't care if I get orange powder on my fingers--I really want a bag of these Frito-Lay snacks, puffs or crunchy Cheetos |
| #6314, aired 2012-02-16 | FILLING UP AT THE GAS STATION $600: Like its motto says, "Hungry? Grab" this chocolate bar with peanuts Snickers |
| #6314, aired 2012-02-16 | FILLING UP AT THE GAS STATION $800: I got you a mini bite size go-pak of this, "Milk's Favorite Cookie"; can I have one? Oreo |
| #6314, aired 2012-02-16 | FILLING UP AT THE GAS STATION $1000: Here you go--the crackers from Nabisco USA called this "in a Biskit"--hope you like them Chicken |
| #6096, aired 2011-02-28 | THE ENVIRONMENT $400: This gas whose molecules have 3 oxygen atoms is a pollutant close to Earth, a protector higher up ozone |
| #5852, aired 2010-02-09 | DO IT YOURSELF $200: In 1947, Frank Ulrich pumped up L.A. drivers with the first successful self-serve this gas station |
| #5484, aired 2008-06-12 | SPACE SCIENCE $2000: (Kelly of the Clue Crew shows some punctured metal tiles.) To evaluate materials like shuttle shielding, projectiles are fired at speeds up to 16,000 miles per hour using this simple gas, compressed hydrogen |
| #5407, aired 2008-02-26 | AUTO HAIKU $600: Gas up its Prius /
MPG is 55 /
Time to hit the road Toyota |
| #5294, aired 2007-09-20 | UP, UP & AWAY $2000: This craft left California Dec. 14, 1986 & landed back there with 18 gallons of gas left after circling the world Voyager |
| #5153, aired 2007-01-24 | BASIC SCIENCE $400: Nitrogen makes up around 78% of the atmosphere; this gas, only about 20% oxygen |
| #4715, aired 2005-02-18 | IT'S BEEN A "GAS" $600: This mythological animal carries Zeus' thunder & lightning Pegasus |
| #4670, aired 2004-12-17 | NEXT STOP, VENUS $1,400 (Daily Double): Contributing to its high temperature, Venus' atmosphere is predominantly made up of this gas carbon dioxide |
| #4637, aired 2004-11-03 | IT'S ELEMENTAL $400: With 1 as its atomic number, this gas heads up the periodic table hydrogen |
| #4621, aired 2004-10-11 | "CC" ME ON THAT $400: Hit the gas to speed up accelerate |
| #4391, aired 2003-10-13 | ENERGY $800: (Cheryl of the Clue Crew at an oil rig near Oklahoma City) Once a derrick has drilled, what you see in an oil field is a pumpjack, bringing up mainly oil & this fuel natural gas |
| #4264, aired 2003-02-27 | THE BAD AIR UP THERE $400: You can't see or smell this gas produced by gas engines, but inhaling it will make you dizzy carbon monoxide |
| #4264, aired 2003-02-27 | THE BAD AIR UP THERE $600: Near the ground, this gas is a major part of smog; at higher altitudes, it helps block radiation from the sun ozone |
| #4195, aired 2002-11-22 | SCIENTIFIC DISCOVERIES $2000: In the 1770s Lavoisier discovered that air is made up mostly of oxygen & this gas nitrogen |
| #3872, aired 2001-06-05 | FILL 'ER UP? $1000: In the '40s this gas company used the slogan "Best in the long run" (Get it? Long run) Marathon Oil |
| #3757, aired 2000-12-26 | MONEY PROBLEMS $600: If gas is $1.40 a gallon & your dad's tank holds 11 gallons, it costs this much to fill 'er up $15.40 |
| #3663, aired 2000-07-05 | FRENCH WEIGHTS & MEASURES $200: Pull up to le garage & you'll get your essence, "gas", in these units litres |
| #3129, aired 1998-03-19 | IN THE AIR UP THERE $500: About 80% of this gas in the air comes from decomposition in rice paddies, swamps, and animal intestines methane |
| #3120, aired 1998-03-06 | AIR $100: Nitrogen makes up about 78% of the air to this gas' 21%, so no one has ever needed a nitrogen tent oxygen |
| #3049, aired 1997-11-27 | FILLED UP $300: The Shenandoah, commissioned by the U.S. Navy in 1923, was its 1st Zeppelin-type airship filled with this gas helium |
| #2469, aired 1995-05-04 | THE ELEMENTS $800: Most living things cannot use this element as a gas though it makes up about 78% of the atmosphere nitrogen |
| #2261, aired 1994-06-06 | THE 1890s $400: Symbolized Ar, this gas that makes up about 1% of the air was isolated in 1894 argon |
| #1984, aired 1993-04-01 | GENERAL SCIENCE $400: About 70% of this pungent gas produced is converted into fertilizer ammonia |
| #1931, aired 1993-01-18 | THE SUN $600: It's believed that about 75% of the Sun's mass is made up of this gas hydrogen |
| #1890, aired 1992-11-20 | NUCLEAR ENERGY $1000: Fusion reactions occur in this superhot gas made up of free electrons & free nuclei the plasma |
| #1874, aired 1992-10-29 | GASES $600 (Daily Double): Produced by the decay of plant & animal matter, this colorless & odorless gas, CH4, is flammable methane |
| #1677, aired 1991-12-10 | THE ENVIRONMENT $1,500 (Daily Double): Scientists have found that cows belch up to 430 liters per day of this gas, worsening global warming methane |
| #1408, aired 1990-10-17 | "A" IN SCIENCE $100: The gas pedal on a car, or a substance that speeds up a chemical reaction accelerator |
| #1356, aired 1990-06-25 | THE EARTH $200: Up to 85% of the gas that spews from volcanoes is this type of vapor water |
| #1052, aired 1989-03-14 | TV TRIVIA $100: Gomer Pyle gave up his gas pump to join this branch of the service the Marine Corps |
| #966, aired 1988-11-14 | SIGNS & SYMBOLS $1000: In a chemical equation this symbol denotes a substance has escaped as a gas an arrow pointing up |
| #496, aired 1986-11-03 | THE SUN $800: Discovered on the sun before it was found on Earth, this gas makes up about 1/4 of the sun's mass helium |
| #387, aired 1986-03-04 | CHEMISTRY $400: This gas makes up about 21% of the air oxygen |
| #354, aired 1986-01-16 | SCIENCE $400: When falling, rain picks up extra oxygen, carbon dioxide, & this gas, the largest component of air nitrogen |
| #327, aired 1985-12-10 | GAS $200: 2 of 4 gasses used to make balloons go "up up & away" (2 of) Helium, hot air, hydrogen, natural gas |
| #114, aired 1985-02-14 | CHEMISTRY $200: This gas makes up 78% of our air nitrogen |
