Memorize these and you could recognize 9.8% of all Science clues.
| # | Answer | Appearances | Sample Clue |
|---|---|---|---|
| 1 | gravity | 21 | On Earth, it's the major force responsible for the weight of a body |
| 2 | hydrogen | 20 | When "She Loves You" was #1 on the music charts, this was #1 on the periodic chart |
| 3 | Galileo | 18 | In 1633, the Inquisition forced him to recant his belief that Earth revolves around the Sun |
| 4 | carbon | 18 | Element common to cigarette smoke, pencils & diamonds |
| 5 | Sir Isaac Newton | 16 | He outlines his 3 laws of motion in "Philosophiae Naturalis Principia Mathematica" |
| 6 | carbon dioxide | 15 | When an alcohol burns, water & this common gas are formed |
| 7 | Jupiter | 14 | Heinrich Schwabe not only studied sunspots, but discovered the "Great Red Spot" on this planet too |
| 8 | chromosomes | 14 | There are a total of 46 of these in most human cells, & genes within them contain all our hereditary information |
| 9 | Saturn | 13 | It's the solar system's 2nd largest planet |
| 10 | oxygen | 13 | If the flame in a Bunsen burner is yellow, then it's getting too little of this |
| 11 | Albert Einstein | 13 | He was living in Switzerland when he discovered the equivalence of mass & energy in 1907 |
| 12 | Water | 11 | The most common compound on the Earth's surface |
| 13 | mercury | 11 | Only the earth has greater density than this small planet |
| 14 | the Sun | 10 | In order to see a rainbow, this should be at your back |
| 15 | Mars | 10 | Studying this planet in 1877, Schiaparelli called the lines he saw "canali" meaning "channels" |
| 16 | light | 10 | Galileo attempted to measure its speed by having men with lanterns on hills flash each other |
| 17 | igneous | 10 | This class of rocks formed by the solidification of molten rock includes basalt & granite |
| 18 | electrons | 10 | An ion is an atom that has a charge due to a gain or loss of these |
| 19 | Pasteur | 9 | He began studying fermentation to help save France's wine industry from "going sour" |
| 20 | lead | 9 | Constantly breaking down chemically, uranium changes to radium & ultimately to this mineral |
| 21 | helium | 9 | It's the only one of the noble gases with a name that doesn't end in "N" |
| 22 | Dmitri Mendeleev | 9 | This creator of the Periodic Table has an element named for him in the actinide series |
| 23 | Uranium | 8 | This element has 3 natural isotopes: mass numbers 234, 235 & 238 |
| 24 | tin | 8 | The stannous fluoride found in toothpaste is a compound of fluorine & this metal |
| 25 | pressure | 8 | The unit of measure for this force is the bar or millibar |
| 26 | DNA | 8 | Wilkins, Watson & Crick won a Nobel Prize for discovering the structure of this |
| 27 | Archimedes | 8 | Known for his principle of displacement, he's been called "The Father of Experimental Science" |
| 28 | anthropology | 8 | Ethnology, which compares the cultures of various peoples, is part of this field |
| 29 | absolute zero | 8 | -273.15 degrees C. |
| 30 | an electron | 8 | Negatively charged, it was the 1st subatomic particle discovered |
| 31 | the mantle | 7 | The Mohorovicic discontinuity separates the crust from this middle layer of the Earth |
| 32 | seismology | 7 | While this study tries to predict when earthquakes will occur, it's still on shaky ground |
| 33 | Psychology | 7 | Once a branch of philosophy dealing with the mind, it's now considered the science of behavior |
| 34 | meteorology | 7 | It's the study of the atmosphere as well as the study of the weather |
| 35 | metamorphic | 7 | Marble, which is formed from limestone, is an example of this type of changing rock |
| 36 | lithium | 7 | About half as heavy as water, it's the lightest of all metals |
| 37 | iron | 7 | After aluminum, it's the 2nd most abundant metal in the earth's crust |
| 38 | inertia | 7 | The tendency of a body at rest to stay at rest, or in motion to stay in motion |
| 39 | friction | 7 | Property acting to slow objects in motion, it can also cause sparks to fly between 2 lovers |
| 40 | amber | 7 | Term for the fossilized resin from prehistoric pines |
| 41 | stem cells | 7 | These cells from human embryos can grow into any type of tissue & may someday cure diabetes & Alzheimer's |
| 42 | Jean Foucault | 7 | Using a giant pendulum, this French physicist proved that the Earth rotates on its axis |
| 43 | Uranus | 6 | The 7th planet, which was 1st named the "Georgian Star" in honor of Britain's reigning monarch |
| 44 | Ultraviolet | 6 | The electromagnetic waves abbreviated "UV" |
| 45 | the Big Bang | 6 | The Hubble constant tells how fast the universe is expanding since this "noisy" event occurred |
| 46 | silver | 6 | Something described as argentiferous contains or produces this metal |
| 47 | salt | 6 | Something described as "brackish" contains this substance |
| 48 | rubber | 6 | Neoprene is considered an artificial form of this |
| 49 | quartz | 6 | Found worldwide, this, possibly the most common of all minerals, includes forms such as the agate |
| 50 | Potassium | 6 | Saltpeter is a compound of nitrogen, oxygen & this element, symbol K |