| Argentiferous means containing or producing this metal |
silver |
200 |
August 2, 2021 |
| Crabs reabsorb calcium carbonate from their old shells and secrete enzymes to shed them in this process of getting new duds |
molting |
400 |
August 2, 2021 |
| Tonic water contains a small amount of this alkaloid used in the treatment of malaria |
quinine |
600 |
August 2, 2021 |
| This disease was first identified due to a 1976 convention in Philadelphia |
Legionnaires |
800 |
August 2, 2021 |
| Also known as a thunderhead, this 12-letter type of cloud extends through all 3 levels of altitude classification |
cumulonimbus |
1000 |
August 2, 2021 |
| One zygote becomes two & so on & before you know it, you have one of these, the result of fertilization |
an embryo |
200 |
May 13, 2021 |
| A 2020 study says that in the 2030s the Amazon tropical forest may go from a net absorber to a net emitter of this gas |
carbon dioxide |
400 |
May 13, 2021 |
| Using binomial nomenclature, Linnaeus is considered the founder of this, the field of classifying organisms |
taxonomy |
600 |
May 13, 2021 |
| Newly created nihonium is classified as a "trans-" this element |
transuranium |
800 |
May 13, 2021 |
| This type of supercomputer uses subatomic particles to help processing go quickly; Honeywell is making a really fast one |
quantum |
1000 |
May 13, 2021 |
| (Dr. Markaisa Black presents the clue.) Diabetes was a death sentence until Dr. Frederick Banting discovered how to use & extract this hormone to treat the disease |
insulin |
200 |
February 12, 2021 |
| (Dr. Markaisa Black presents the clue.) To provide immunity from smallpox, in 1796 British physician Edward Jenner used cowpox to make the first of these, which is why the word comes from the Latin for "cow" |
vaccine |
400 |
February 12, 2021 |
| (Dr. Markaisa Black presents the clue.) In 1996, a team at Roslin Institute in Scotland used a technique known as somatic cell nuclear transfer to produce the first clone of an adult mammal, a Finn Dorset sheep named this |
Dolly |
600 |
February 12, 2021 |
| (Dr. Markaisa Black presents the clue.) This property of elements, like uranium & thorium, was discovered in part by Marie Curie, who actually coined the word for it |
radioactivity |
800 |
February 12, 2021 |
| (Dr. Markaisa Black presents the clue.) In 2020, for the first time ever, the Nobel Prize in Chemistry was won by two women, Jennifer Doudna & Emmanuelle Charpentier, for their work on the revolutionary gene editing tool known by this acronym |
CRISPR |
1000 |
February 12, 2021 |
| The greatest incidence of tornadoes is in this country, where more than 1,000 happen annually |
the United States |
200 |
September 18, 2019 |
| Similar to Jupiter's Great Red Spot, this planet once had a Great Dark Spot storm system that was about the size of Earth |
Neptune |
400 |
September 18, 2019 |
| In physics, it's when 2 waves meet & sometimes neutralize each other; in broadcasting, it's disturbance by outside signals |
interference |
600 |
September 18, 2019 |
| To make binoculars compact, they may contain these pieces of glass with precise angles & faces to "fold" the light path |
a prism |
800 |
September 18, 2019 |
| During a total solar eclipse, you can glimpse this "colorful" layer of the Sun just above the photosphere |
the chromosphere |
|
September 18, 2019 |
| (Jimmy of the Clue Crew picks up filings with a bar magnet.) On a bar magnet, the magnetic field is strongest at the two ends, which are called these, just like the opposite ends of the Earth |
poles |
200 |
November 15, 2018 |
| It's the more familiar name for light amplification by the stimulated emission of radiation |
laser |
400 |
November 15, 2018 |
| (Kelly of the Clue Crew holds an inflated balloon.) Right now the inflated balloon has potential energy; when I let it go, the potential energy turns into this, the mechanical energy of motion |
kinetic energy |
600 |
November 15, 2018 |
| This element that can turn a swimmer's hair green takes its name from the Greek for "greenish yellow" |
chlorine |
800 |
November 15, 2018 |
| While it's still deep within the Earth, before it becomes lava, molten rock is called this |
magma |
1000 |
November 15, 2018 |
| These variations in the level of the oceans have the most variation at the new moon |
tides |
200 |
June 13, 2018 |
| Development of an organism from gamete to fetus is the focus of this -ology |
embryology |
400 |
June 13, 2018 |
| This type of cloud that can ruin a picnic grows from cumulus clouds & the word grows from "cumulus" too |
cumulonimbus |
600 |
June 13, 2018 |
| Crossword puzzle addicts know "ase" is a common ending for these, catalyzing proteins produced by cells |
enzymes |
800 |
June 13, 2018 |
| First predicted in 1930, this particle with no charge goes through miles of matter without reacting with a proton or neutron |
neutrinos |
1000 |
June 13, 2018 |
| Bed bugs are attracted to this gas, as it indicates the presence of humans, so they can be lured with dry ice |
carbon dioxide |
200 |
March 5, 2018 |
| During his work with optics, this British scientist created a wheel with colors corresponding to musical notes |
Newton |
400 |
March 5, 2018 |
| Rusty metal is not the source of this disease, but it's a good place for the clostridium bacteria that cause it to grow |
tetanus |
600 |
March 5, 2018 |
| Haptic feedback uses this human sense to relay information from your smartphone |
touch |
800 |
March 5, 2018 |
| If the half-life of trebekium-13 is 10 years, in 20 years your 100-gram sample will be down to this many grams |
25 grams |
|
March 5, 2018 |
| The ragweed variety of this material is seen here under the microscope--achoo! |
pollen |
200 |
September 21, 2016 |
| A nephrectomy is the surgical removal of this organ |
a kidney |
400 |
September 21, 2016 |
| Scientist Albert Hoffman, who died at age 102 in 2008, was best known for synthesizing this 3-letter hallucinogen |
LSD |
600 |
September 21, 2016 |
| The 4 fundamental forces in physics are the strong, the weak, the electromagnetic & this one |
the gravitational force |
800 |
September 21, 2016 |
| Alphabetically, they are the last 2 chemical elements |
zinc & zirconium |
1000 |
September 21, 2016 |
| A measure of distance, not brightness, one is equal to about 6 trillion miles |
a light year |
200 |
July 18, 2016 |
| A long pole helps a tightrope walker by increasing this tendency of a body to stay at rest |
inertia |
400 |
July 18, 2016 |
| Humans have 2 of these long bones, the longest in the body |
a femur |
600 |
July 18, 2016 |
| Kids on a seesaw instinctively calculate this, the tendency of a force to produce rotation around an axis |
torque |
800 |
July 18, 2016 |
| Self-healing like the T-1000, the "terminator" type of this macromolecule compound was discovered in 2013 |
a polymer |
1000 |
July 18, 2016 |
| Newts & toads are members of this class of animals |
amphibians |
200 |
February 24, 2016 |
| Olden sailors got scurvy due to a lack of this vitamin |
C |
400 |
February 24, 2016 |
| "Truth" & "beauty" are alternate names that physicists once used for the "top" & "bottom" types of these particles |
quarks |
600 |
February 24, 2016 |
| This potent greenhouse gas has the formula CH4 |
methane |
800 |
February 24, 2016 |
| For water, .0098 degrees Celsius & .00603 atmospheres is this point at which it can exist as a solid, liquid or gas |
the triple point |
1000 |
February 24, 2016 |
| It's the universal force of attraction acting between all matter |
gravity |
200 |
December 8, 2015 |
| (Sarah of the Clue Crew demonstrates.) The beads here have been specially treated so that indoors they're white, but when you take them outside and they're exposed to these invisible rays that can give you a sunburn, they change color |
ultraviolet rays |
400 |
December 8, 2015 |
| A plant that lives & dies in one growing season is an annual; irises are this type that lives 3 or more years |
perennial |
600 |
December 8, 2015 |
| This playful creature is named for the shape of its snout |
a bottlenose dolphin |
800 |
December 8, 2015 |
| It's what RNA stands for |
ribonucleic acid |
1000 |
December 8, 2015 |
| Oxygen combines with lots of other elements; with this one it makes ZnO, used as an ointment |
zinc |
200 |
October 4, 2013 |
| Similar to reflex, humans' average for this time is roughly 1/4 second & we're going to test yours... right... now ! |
reaction |
400 |
October 4, 2013 |
| Lack of camouflage & sensitivity to UV radiation doom any wild alligators with this condition from a mutation |
albino |
600 |
October 4, 2013 |
| A Mars rover found this, hydrated calcium sulfate, indicating not Martian drywallers but Martian water |
gypsum |
800 |
October 4, 2013 |
| Stomp rockets are powered by what's usually called this type of "air" that's been squished under greater than normal pressure |
compressed air |
1000 |
October 4, 2013 |
| This transparent structure behind the iris focuses light entering the eye |
the lens |
200 |
January 31, 2012 |
| (Sarah of the Clue Crew shows us diagrams from the Hall of Human Origins at the Smithsonian.) Comparing MRI scans of a chimp's brain & a human's shows that the human's is not merely larger; it also contains vastly more white matter connecting these cells vital to the transmission & processing of information |
nerves |
400 |
January 31, 2012 |
| By definition, this adjective describes certain organisms that can or must live in the absence of oxygen |
anaerobic |
600 |
January 31, 2012 |
| (Kelly of the Clue Crew shows us molecular models in the lab.) We're using models of ethanol to show the 2 basic types of molecular models; 1 clarifies the bonds between these particles, while the other shows better what the molecule looks like in actual space |
atoms |
800 |
January 31, 2012 |
| This name of the infectious disease caused by the Epstein-Barr virus comes from words meaning "one" & "kernel" |
mononucleosis |
1000 |
January 31, 2012 |
| He was in Shanghai in 1921 when he found out he had won a Nobel Prize for Physics |
Einstein |
200 |
May 29, 2009 |
| Isaac Newton published his first mathematical formulation for this fundamental force in 1687 |
gravity |
400 |
May 29, 2009 |
| In 1996 (seems late) researchers announced a new one of these body parts, the spheno-mandibularis |
a muscle |
600 |
May 29, 2009 |
| When boiling water, energy absorbed that escapes as vapor is this type of heat, from Latin latere, "to hide" |
latent energy |
1000 |
May 29, 2009 |
| During an epidemic of this disease in 1796, Edward Jenner discovered the power of vaccines & used it to save lives |
smallpox |
|
May 29, 2009 |
| Each of these organs contains about 1 million nephrons, which filter blood |
the kidneys |
200 |
November 12, 2008 |
| (Jon of the Clue Crew sucks on a straw in a sealed-up bottle that has a marshmallow inside.) The marshmallow in the bottle will expand when I suck on the straw because this property inside the bottle will decrease |
(air) pressure |
400 |
November 12, 2008 |
| These were first seen in human cells in 1882; the exact number, 46, was determined in 1956 |
chromosomes |
600 |
November 12, 2008 |
| (Jon of the Clue Crew pushes a straw into a cupcake, then extracts the result.) Using a cupcake & straw, we're approximating 1 of these 2-word scientific readings used in undersea & underground prospecting |
core sampling |
800 |
November 12, 2008 |
| In 1758 this Swedish biologist introduced binomial nomenclature |
Linnaeus |
1000 |
November 12, 2008 |
| It's what the "L" stands for in "laser" |
light |
200 |
July 8, 2008 |
| The Celsius temperature scale is also called this, meaning "divided into one hundred parts" |
centigrade |
400 |
July 8, 2008 |
| (Cheryl of the Clue Crew performs a science experiment.) By mixing baking soda, a chemical base, with the acid in the lime juice, this gas is produced, resulting in a bubbly liquid |
carbon dioxide |
600 |
July 8, 2008 |
| This one of the simple machines is made by using a wheel & a rope |
a pulley |
800 |
July 8, 2008 |
| Shock researcher Walter Cannon coined this word for an organism's ability to maintain internal equilibrium |
homeostasis |
1000 |
July 8, 2008 |
| (Kelly of the Clue Crew demonstrates with a coffee can & an inclined plane.) A ball of clay inside the can is enough to reposition the can's natural center of this, so the can rolls uphill |
gravity |
200 |
March 28, 2008 |
| Every second, fusion reactions in the Sun convert about 600 million tons of this element into helium |
hydrogen |
400 |
March 28, 2008 |
| Edward Doisy won a 1943 Nobel Prize for synthesizing this hemorrhage-inhibiting vitamin; isn't that "special"? |
vitamin K |
600 |
March 28, 2008 |
| Of the 3 basic rock types, the type that was once one form but has changed to another due to heat & pressure |
metamorphic |
800 |
March 28, 2008 |
| (Jon of the Clue Crew holds a white rock at White Sands National Monument, New Mexico.) Because it's water-soluble, this form of calcium sulfate is rarely found in sand, but here in New Mexico's Tularosa Basin, there are no rivers to carry it away, so it forms the famed white sand |
gypsum |
1000 |
March 28, 2008 |
| ( Kelly of the Clue Crew delivers the clue from a science lab. ) The heat from the lamp causes the snake to dance, as hot air is less this five-letter term than cold air and therefore rises and spins the snake |
dense |
200 |
July 12, 2007 |
| In the nervous system, calcium ions crossing the gap between these cause a release of acetylcholine |
neurons |
400 |
July 12, 2007 |
| ( Kelly delivers the clue from the lab. ) Normally, an ice cube floats; this one, however, sinks right to the bottom because it's made of heavy water, or D2O; the D standing for this isotope |
deuterium |
600 |
July 12, 2007 |
| As opposed to what arthropods have, vertebrates have this internal framework |
endoskeleton |
800 |
July 12, 2007 |
| ( Jimmy of the Clue Crew delivers the clue. ) Though the top book appears to be suspended in air, more than half the weight of the stack rests on the table - the principle is used to build this type of bridge |
cantilever bridge |
1000 |
July 12, 2007 |
| This type of rain forms when nitrogen oxides & sulfur dioxide react within growing droplets |
acid rain |
200 |
March 12, 2007 |
| (Jon of the Clue Crew points to two diagrams of the Earth's tilt on the monitor.) Because of the tilt of the Earth's axis both in summer & winter, solar panels in the United States facing this direction receive the most sun |
south |
400 |
March 12, 2007 |
| This branch of study is for the birds... actually, it's of the birds |
ornithology |
600 |
March 12, 2007 |
| In 1633 the Church condemned him to house arrest for astronomical heresy |
Galileo |
800 |
March 12, 2007 |
| (Kelly of the Clue Crew reading points to a fly's eye on the monitor.) An insect's compound eye can detect 300 flashes of light per second compared to a human's 50, using thousands of tiny lenses known as these, as in a diamond |
a facet |
1000 |
March 12, 2007 |
| The opposite of a base, it turns blue litmus red |
an acid |
200 |
November 16, 2006 |
| Jaundice can be a symptom of this liver disease, type A, B or C |
hepatitis |
400 |
November 16, 2006 |
| The 10th to 12th of these body parts that form a "cage" articulate with single vertebrae |
ribs |
600 |
November 16, 2006 |
| Echocardiography can tell you whether this doublespeak heart issue is caused by an abnormal valve |
heart murmur |
800 |
November 16, 2006 |
| Also known as epinephrine, this hormone is secreted in response to stress, like fear or injury |
adrenaline |
|
November 16, 2006 |
| This medal metal is usually an alloy of tin & copper |
bronze |
200 |
March 13, 2006 |
| (Jon of the Clue Crew reports from Copenhagen, Denmark.) In 1883, Carlsberg developed Saccharomyces carlsbergensis, a special strain of this to ferment the sugars in beer |
yeast |
400 |
March 13, 2006 |
| The name of this disorder in which the bones become porous comes from the Greek for "bone" & "passage" |
osteoporosis |
800 |
March 13, 2006 |
| In astronomy, this unit of measure is abbreviated pc |
parsec |
1000 |
March 13, 2006 |
| In testing out gases by smelling them (not a good idea) Humphry Davy found in 1800 that this one made him feel giddy |
nitrous oxide (or laughing gas) |
|
March 13, 2006 |
| Cosmic rays were first detected by V. F. Hess during a flight by one of these |
a hot air balloon |
200 |
January 24, 2005 |
| The crepe ring is the transparent C ring in this planet's ring system |
Saturn |
400 |
January 24, 2005 |
| Albert Ghiorso at Lawrence Berkeley National Lab holds the record for discovering the most of these |
elements |
600 |
January 24, 2005 |
| In MS-DOS, the .bak file extension meant the file was this type |
back-up file |
800 |
January 24, 2005 |
| An isohel on a weather map is a line showing connecting places with an equal amount of this |
sunshine |
|
January 24, 2005 |
| These electromagnetic rays used to take pictures of your insides were originally known as Roentgen rays |
X-rays |
200 |
April 28, 2003 |
| This German-born American physicist won the 1921 Nobel Prize for Physics |
Albert Einstein |
400 |
April 28, 2003 |
| Also a term for someone from Warsaw, it's one of the 2 strongest points in a magnetic field |
Pole |
800 |
April 28, 2003 |
| The symbol of this radioactive element is Pu & it sounds like it's named after Mickey Mouse's dog |
plutonium |
1000 |
April 28, 2003 |
| When combined with oxygen, this lightest chemical element makes water |
hydrogen |
|
April 28, 2003 |
| The leatherback variety of this reptile is one of the few animals that primarily eat jellyfish |
turtle/tortoise |
200 |
April 24, 2003 |
| This "prefrontal" medical procedure involves the destruction of sections of the brain's cortex |
lobotomy |
400 |
April 24, 2003 |
| This process of making rubber harder & more elastic by heating it with sulfur bears the name of a Roman god |
vulcanization |
600 |
April 24, 2003 |
| His 1543 book "Concerning the Revolutions of the Celestial Spheres" started an astronomical revolution |
Nicholas Copernicus |
800 |
April 24, 2003 |
| The process by which neutral atoms become electrically charged is called this |
ionization |
1000 |
April 24, 2003 |
| The vast majority of this second-lightest gas comes from natural gas fields in the U.S. |
helium |
200 |
January 8, 2003 |
| Sialia mexicana is the scientific name of the western bluebird: Sialia is the genus & mexicana tells you this |
the species |
400 |
January 8, 2003 |
| In a first-class type of this, the fulcrum is between the applied force and the load |
a lever |
600 |
January 8, 2003 |
| The tail of this body is formed when ice turns into gas as it gets closer to the sun |
a comet |
800 |
January 8, 2003 |
| This 5-letter word is the opposite of attract |
repel |
1000 |
January 8, 2003 |
| His 1905 paper "On the Electrodynamics of Moving Bodies" contained his special Theory of Relativity |
Albert Einstein |
200 |
November 8, 2002 |
| In 1935 the daughter of this famed pair won a Nobel Prize for the discovery of artificial radioactivity |
Pierre & Marie Curie |
400 |
November 8, 2002 |
| (Hi, I'm Nobel laureate Rudy Marcus.) It's the chemical formula for dry ice |
CO2 |
600 |
November 8, 2002 |
| The term geotropism refers to the effect that this has on the direction plants grow or bend |
gravity/the Earth |
800 |
November 8, 2002 |
| In the Arctic, some of these organisms consisting of an alga & a fungus may be 4,000 years old |
lichens |
1000 |
November 8, 2002 |
| It's what the "L" stands for in laser |
light |
100 |
November 20, 2001 |
| What we call table salt is the most common compound of this element |
sodium |
200 |
November 20, 2001 |
| On a weather map isotherms join places of equal temperature & these lines join places of equal air pressure |
isobars |
300 |
November 20, 2001 |
| Lepidoptera is the order of insects that includes skippers & these 2 familiar groups |
butterflies & moths |
400 |
November 20, 2001 |
| One of the earliest devices for storing electricity was this jar, named for a Dutch city |
a Leiden jar |
500 |
November 20, 2001 |
| In biology it's a finger; in math, a figure like 1 |
a digit |
100 |
March 10, 2000 |
| A free-falling body accelerates at a rate of about 1 g, g coming from this word |
gravity |
200 |
March 10, 2000 |
| Pre-Y1K scientists figured this organ gave out light; they were, of course, wrong |
eye |
300 |
March 10, 2000 |
| These in the skies of Albuquerque on October 3, 1999 were a fine example of Charles' Law in action |
hot air balloons |
400 |
March 10, 2000 |
| The 5-kingdom system is made up of animals, bacteria, plants, protists & these |
fungi |
500 |
March 10, 2000 |
| The SO in SONAR stands for this word |
Sound |
100 |
October 27, 1998 |
| This space station turned 10 in February 1996 |
Mir |
200 |
October 27, 1998 |
| In 1882 this inventor opened the Pearl Street Power Station in New York |
Thomas Edison |
300 |
October 27, 1998 |
| In a car's steering system, it's the geared wheel that moves the rack |
Pinion |
400 |
October 27, 1998 |
| To produce this metal using the Bayer Process, you begin with caustic soda & bauxite |
Aluminum |
500 |
October 27, 1998 |
| The Graafian follicles of these glands contain the female reproductive cells |
Ovaries |
100 |
October 16, 1997 |
| The sun is 333,000 times as massive as the Earth & 1,047 times as massive as this planet |
Jupiter |
200 |
October 16, 1997 |
| Two 9-volt batteries in a series circuit produce this many volts of electromotive force |
18 |
400 |
October 16, 1997 |
| The screw & the wedge are adaptations of this type of simple machine |
Inclined plane |
500 |
October 16, 1997 |
| This green plant pigment is also found in algae & in some bacteria |
Chlorophyll |
100 |
September 16, 1997 |
| In 1875 this plant breeder moved to California using profits earned on his potato |
Luther Burbank |
200 |
September 16, 1997 |
| It's defined as an atom or group of atoms that has an electrical charge |
Ion |
300 |
September 16, 1997 |
| A 1991 photo of Gaspra taken by the Galileo probe was the first close-up of one of these minor planets |
Asteroid |
400 |
September 16, 1997 |
| In the 1940s this Nobel Prize winner & vitamin C advocate studied the structure of antibodies |
Linus Pauling |
|
September 16, 1997 |
| This fossilized resin from prehistoric pines can preserve an insect forever |
amber |
100 |
July 18, 1997 |
| Most icebergs in the north Atlantic come from about 20 glaciers on this island's west coast |
Greenland |
200 |
July 18, 1997 |
| Around 1840 chemist John William Draper took the first photograph of this heavenly body |
the moon |
300 |
July 18, 1997 |
| Birds & bees perform this transfer of gametes from anthers to stigmas |
pollination |
400 |
July 18, 1997 |
| Einstein said measurements of this depend on whether the observer is moving; it's not absolute |
time |
500 |
July 18, 1997 |
| An EEG records the electrical activity of this organ |
Brain |
100 |
June 19, 1997 |
| Human beings normally have 46 of these in most of their cells |
Chromosomes |
200 |
June 19, 1997 |
| This second-lightest metal, symbol K, is so soft it can be cut with a knife |
Potassium |
300 |
June 19, 1997 |
| He's been called the "Father of Modern Rocketry" |
Robert Goddard |
400 |
June 19, 1997 |
| According to his law, resistance in a DC circuit is the ratio of volts to amps |
Georg Ohm |
500 |
June 19, 1997 |
| The largest cell is the 3-inch diameter yolk of this bird's egg |
Ostrich |
100 |
May 29, 1997 |
| In Latin this metal is known as aurum |
Gold |
200 |
May 29, 1997 |
| On a weather chart this line connects places that have the same barometric pressure |
Isobar |
300 |
May 29, 1997 |
| On June 29, 1994 the temperature reached 125 degrees in Laughlin, the highest ever recorded in this state |
Nevada |
400 |
May 29, 1997 |
| This organ removes excess glucose from the blood & stores it as glycogen |
Liver |
500 |
May 29, 1997 |
| The boundary between the mantle & this layer is called the Mohorovicic Discontinuity |
Crust |
100 |
April 22, 1997 |
| These 2 ducts lead from the ovaries to the uterus |
Fallopian tubes |
200 |
April 22, 1997 |
| In the 1920s, Julius Nieuwland polymerized acetylene, added chlorine atoms & created this synthetic rubber |
Neoprene |
300 |
April 22, 1997 |
| On July 10, 1996 scientists released close-up photos of Ganymede taken by this space probe |
Galileo |
400 |
April 22, 1997 |
| In 1993 Eugene & Carolyn Shoemaker & David Levy discovered a highly fragmented one of these |
Comet |
500 |
April 22, 1997 |
| This gas, symbol Xe, is used in stroboscopes & high-speed camera flashes |
Xenon |
100 |
March 26, 1997 |
| Nearly twice as sweet as sucrose, this fruit sugar is the main sweetener in honey |
Fructose |
200 |
March 26, 1997 |
| An archipelago is a group of islands & this is a ring of coral islands like Bikini in the Pacific |
Atoll |
300 |
March 26, 1997 |
| Developed by Edward Jenner, the first true vaccine was designed to protect against this disease |
Smallpox |
400 |
March 26, 1997 |
| They're the 2 lines of latitude lying 23 1/2 degrees north & south of the Equator |
Tropic of Cancer & Tropic of Capricorn |
500 |
March 26, 1997 |
| This ninth planet's unusual orbit sometimes brings it closer to the sun than the eighth planet |
Pluto |
100 |
March 25, 1997 |
| It's the ratio of the amount of water vapor in the air to the amount the air can hold at that temperature |
Relative humidity |
200 |
March 25, 1997 |
| A parasitoid differs from a parasite in that this eventually happens to its host |
It dies |
300 |
March 25, 1997 |
| The acceleration of falling objects varies from place to place because of variations in this force |
Gravity |
400 |
March 25, 1997 |
| It's the property of a body that opposes an electric current moving through it |
Resistance |
500 |
March 25, 1997 |
| These respiratory organs of aquatic animals occur in oysters & some insect larvae as well as in fish |
Gills |
100 |
March 19, 1997 |
| Used to control glaucoma, a trabeculectomy is a procedure that reduces pressure in this organ |
Eye |
200 |
March 19, 1997 |
| The number of these dark patches visible on the sun's surface varies from a few to several hundred |
Sunspots |
300 |
March 19, 1997 |
| A phrase used to remember this planet's main moons is "Met Dr. Thip"; Titan is the second T |
Saturn |
400 |
March 19, 1997 |
| This drug marketed as Motrin was patented in Great Britain in 1964 |
Ibuprofen |
500 |
March 19, 1997 |
| Magnetism occurs most strongly in 3 elements: nickel, cobalt & this |
Iron |
100 |
February 6, 1997 |
| In 1665 Robert Hooke described & named this structural unit; bacteria have only one |
Cell |
200 |
February 6, 1997 |
| In 1698 Thomas Savery designed the first practical engine to run on this power |
steam |
300 |
February 6, 1997 |
| This blood protein now comes in alpha, beta & gamma types |
Globulins |
400 |
February 6, 1997 |
| Simple machine Archimedes would use to "move the Earth" if you gave him a firm spot on which to stand |
Lever |
500 |
February 6, 1997 |
| Hirsutism is having more than the normal amount of this |
hair |
100 |
October 3, 1996 |
| This 4th letter of the Greek alphabet is used to describe a high-speed aircraft wing type |
delta |
200 |
October 3, 1996 |
| The focal length is the distance from the center of one of these to the focal point |
the lens |
300 |
October 3, 1996 |
| When astronomers got a close-up look at this object in 1985-86, its nucleus looked like a big potato |
Halley\'s comet |
400 |
October 3, 1996 |
| This term refers to the warm periods within ice ages; we're in one of those periods now |
interglacial |
500 |
October 3, 1996 |
| A thermal spring that intermittently ejects steam & boiling water is called this |
geyser |
100 |
September 27, 1996 |
| The earliest evidence of these made from stone by early man dates to about 2.5 million years ago |
tools |
200 |
September 27, 1996 |
| A simple one of these consists of a small mass swinging at the end of a very light string |
pendulum |
300 |
September 27, 1996 |
| About twice a year, when the moon passes through the earth's shadow, one of these events occurs |
lunar eclipse |
400 |
September 27, 1996 |
| The name of this element is derived from tellus, Latin for "earth" |
tellurium |
500 |
September 27, 1996 |
| It's the more common name for sodium chloride |
Salt |
100 |
April 10, 1996 |
| Foxglove is an example of this type of plant that completes its life cycle in 2 years |
Biennial |
200 |
April 10, 1996 |
| After the sun & moon, this planet is the brightest object in the sky |
Venus |
300 |
April 10, 1996 |
| The pH in pH scale stands for the "potential of " this element |
Hydrogen |
400 |
April 10, 1996 |
| In geometry it's a quadrilateral with 2 parallel sides; in anatomy, it's the smallest wrist bone |
Trapezoid |
500 |
April 10, 1996 |
| 800 miles in diameter, the Caloris Basin is a feature of this innermost planet |
Mercury |
100 |
February 13, 1996 |
| In medicine the person whose organ is removed for transplantation is called this |
a donor |
200 |
February 13, 1996 |
| Carbonization of this fuel in an oven produces coke used in blast furnaces |
coal |
300 |
February 13, 1996 |
| A triploid cell has this many times the number of chromosomes as a haploid |
3 times as many |
400 |
February 13, 1996 |
| Sir Charles Lyell is remembered for contributing the theory of uniformitarianism to this earth science |
geology |
500 |
February 13, 1996 |
| Drumlins are elongated, elliptical hills formed at the edges of these moving ice masses |
glaciers |
100 |
January 24, 1996 |
| Elements are arranged in order of their atomic numbers on this table |
the periodic table of elements |
200 |
January 24, 1996 |
| This yellow element is found in gunpowder & matches & is used in vulcanizing rubber |
sulfur |
300 |
January 24, 1996 |
| 2 bacteria, Lactobacillus bulgaricus & Streptococcus thermophilus, turn milk into this |
yogurt |
400 |
January 24, 1996 |
| Named after its 19th century inventor, this pendulum demonstrates the Earth's rotation |
Foucault\'s pendulum |
500 |
January 24, 1996 |
| Among alkaloids found in plants, this stimulant is found in coffee or tea |
caffeine |
100 |
January 18, 1996 |
| You may not need a high IQ to know IQ stands for this |
intelligence quotient |
200 |
January 18, 1996 |
| Name for the process a caterpillar goes through to become a moth |
metamorphosis |
300 |
January 18, 1996 |
| When cocci live in pairs, they're called diplococci; in clusters, staphylococci; in chains, this |
streptococci |
400 |
January 18, 1996 |
| Next in length on the scale of geological time: age, epoch, period, era... |
eon |
|
January 18, 1996 |
| It's the most massive object in our solar system |
the Sun |
100 |
December 19, 1995 |
| After a new queen bee emerges from her cell, she goes on a mating flight with these bees |
the drones |
200 |
December 19, 1995 |
| It's the science of creating extremely low temperatures |
cryogenics |
300 |
December 19, 1995 |
| Type of doctor who would perform surgery for glaucoma |
an ophthalmologist (an oculist) |
400 |
December 19, 1995 |
| Refusing to patent his discovery, this X-ray discoverer died penniless |
Roentgen |
500 |
December 19, 1995 |
| Mycobacterium tuberculosis is one of the organisms this process kills in milk |
Pasteurization |
100 |
November 15, 1995 |
| Like humans, the Red-vented Bulbul bird needs a dietary source of this vitamin, also called ascorbic acid |
Vitamin C |
200 |
November 15, 1995 |
| Boiling bones & hides converts the protein collagen to this foodstuff |
Gelatin |
300 |
November 15, 1995 |
| Horseshoe crabs & coelacanth fish are considered living ones of these |
Fossils |
400 |
November 15, 1995 |
| Quarks have six known ones of these, which is far short of Baskin-Robbins |
flavors |
500 |
November 15, 1995 |
| Ferrovanadium is an alloy of vanadium & this metal |
iron |
100 |
September 27, 1995 |
| The horny casing of the toes of ungulates is called this |
hooves |
200 |
September 27, 1995 |
| In 1990 this space telescope provided the first picture of Charon as completely separate from Pluto |
the Hubble telescope |
300 |
September 27, 1995 |
| He outlines his 3 laws of motion in "Philosophiae Naturalis Principia Mathematica" |
Sir Isaac Newton |
400 |
September 27, 1995 |
| Fusion, the change of a solid to a liquid state, is more commonly called this |
melting |
500 |
September 27, 1995 |
| When they're huge, these lunar features are called basins |
craters |
100 |
July 15, 1994 |
| This part of the spectrum has wavelengths shorter than violet light but longer than X rays |
ultraviolet |
200 |
July 15, 1994 |
| Radon gas is produced by the breakdown of this element in the earth's crust |
radium |
300 |
July 15, 1994 |
| In the fovea of the retina, cones are concentrated but these light-sensitive cells are absent |
rods |
400 |
July 15, 1994 |
| In geology the littoral is the environment between the highest & lowest ones of these on a beach |
the tides |
500 |
July 15, 1994 |
| Formulated NaCl it's the chemical name for common table salt |
sodium chloride |
100 |
May 2, 1994 |
| Of the 3 basic states of matter, only this one, when unconfined, tends to expand indefinitely |
gas |
200 |
May 2, 1994 |
| Term for the time it takes a radioactive substance to decay to 50% of its original quantity |
half-life |
300 |
May 2, 1994 |
| In biological classification this comes between family & species |
genus |
400 |
May 2, 1994 |
| On the Fahrenheit scale, the freezing point of water is 32° & the boiling point is this |
212° Fahrenheit |
500 |
May 2, 1994 |
| In breathing it's the gas you expel to the atmosphere |
Carbon Dioxide |
100 |
December 3, 1993 |
| Erosion from these created fjords & drumlins |
glaciers |
200 |
December 3, 1993 |
| Scientist John Dalton suffered from the red-green type of this |
Colorblindness |
300 |
December 3, 1993 |
| The surfaces of this type of element can be anodized |
metal |
400 |
December 3, 1993 |
| He discovered that if nitroglycerin was absorbed by an inert substance it wouldn't explode from shock |
Alfred Nobel |
500 |
December 3, 1993 |
| A botanist could tell you that algology is the study of these |
algae |
100 |
September 27, 1993 |
| Frogs & toads belong to the anura order of this class of vertebrates |
amphibians |
200 |
September 27, 1993 |
| Photosynthetic bacteria make their food from sunlight, hydrogen sulfide & this gas |
carbon dioxide |
300 |
September 27, 1993 |
| Howard Carter & Heinrich Schliemann were 2 of the most famous names in this field |
archaeology |
400 |
September 27, 1993 |
| This family of anthropologists is renowned for its important fossils finds in East Africa |
Leakey |
|
September 27, 1993 |
| Kaolin is a fine, white type of this material used for ceramics |
clay |
100 |
July 15, 1993 |
| The adjective used to describe things having to do with this planet is Jovian |
Jupiter |
200 |
July 15, 1993 |
| This unit of relative sound intensity is equal to 1/10 of a bel |
decibel |
300 |
July 15, 1993 |
| This partition that separates the abdominal & chest cavities is made up of muscles & tendons |
diaphragm |
400 |
July 15, 1993 |
| By definition, hydroponics is the growing of plants without this |
soil |
500 |
July 15, 1993 |
| It's the element whose atomic weight is closest to its atomic number |
hydrogen |
100 |
June 28, 1993 |
| Inventors of these include Georges Leclanche, Gaston Plante & Alessandro Volta |
batteries |
200 |
June 28, 1993 |
| Life here was the subject of the 1965 book "World Without Sun" |
the sea |
300 |
June 28, 1993 |
| After 1,400 orbits it fell back to Earth January 4, 1958 & burned up |
Sputnik |
400 |
June 28, 1993 |
| In 1977 the U.S. banned these that used freon as the propellant |
spray cans |
500 |
June 28, 1993 |
| Found in woody structures such as straw & corncobs, xylose is a form of this sweet substance |
sugar |
100 |
April 8, 1993 |
| Baily's Beads, bright spots along the rim of the moon, can be seen during this occurence |
eclipse |
200 |
April 8, 1993 |
| Used in rocket propulsion, LOX stands for this |
liquid oxygen |
300 |
April 8, 1993 |
| While soapstone can refer to any greasy rock, it usually applies to one made of this soft mineral |
talc |
400 |
April 8, 1993 |
| Formed by bacterial fermentation, it's the acid that makes sour milk sour |
lactic acid |
|
April 8, 1993 |
| Psychologists refer to this sense as olfaction |
smell |
100 |
May 22, 1992 |
| The length of this on Jupiter is less than 10 hours |
the day |
200 |
May 22, 1992 |
| Palynology seeks knowledge about past plant distribution by studying grains of this |
pollen |
300 |
May 22, 1992 |
| Consisting of 3 atoms, water is an example of a triatomic one of these units |
a molecule |
400 |
May 22, 1992 |
| American Arthur Compton's work proved the existence of these "particles" of light |
photons |
500 |
May 22, 1992 |
| Duralumin is a light, hard alloy consisting mostly of this metal |
aluminum |
100 |
July 12, 1991 |
| Any muscle with two heads, like the one in the front of your upper arm |
bicep |
200 |
July 12, 1991 |
| Hordeolum, the infection of a gland at the base of an eyelash, is commonly called this |
a stye |
300 |
July 12, 1991 |
| "Explosive" other name for the superdense theory of the origin of the cosmos |
the Big Bang Theory |
400 |
July 12, 1991 |
| Malachite is used as a green gemstone & as an ore of this metal |
copper |
500 |
July 12, 1991 |
| Vulcanization increases the hardness of this by heating it with sulphur |
rubber |
100 |
June 12, 1991 |
| Dieters should know that this unit of energy is equal to about 4.2 joules |
a calorie |
200 |
June 12, 1991 |
| It's the main constituent of the cell walls of plants |
cellulose |
300 |
June 12, 1991 |
| The symbol of this form of oxygen that screens the Earth from ultraviolet rays is O3 |
ozone |
400 |
June 12, 1991 |
| It's an alloy consisting primarily of copper and zinc |
brass |
500 |
June 12, 1991 |
| When light is passed thru a prism, it produces this spread of colors |
Spectrum |
100 |
January 25, 1991 |
| It's the branch of chemistry that deals with carbon compounds |
Organic Chemistry |
200 |
January 25, 1991 |
| All lines of longitude are measured east or west of this line |
Prime Meridian |
300 |
January 25, 1991 |
| The Big Dipper is part of this constellation |
Ursa Major |
400 |
January 25, 1991 |
| The most important source of uranium & radium is this mineral ore |
Pitchblende |
500 |
January 25, 1991 |
| Invented by Edwin Land, it was the first instant camera |
Polaroid Camera |
100 |
January 17, 1991 |
| When Henry Cavendish discovered this lightest-known element, he called it inflammable air |
Hydrogen |
200 |
January 17, 1991 |
| Galileo is said to have done gravity experiments by dropping weights from this tower |
Leaning Tower of Pisa |
300 |
January 17, 1991 |
| In ancient times, lodestone was used as a form of this instrument |
Compass |
400 |
January 17, 1991 |
| A positive ion is formed when an atom loses one or more of these |
Electron |
500 |
January 17, 1991 |
| Term for the sound produced by the expansion of air that's been heated by lightning |
thunder |
100 |
October 9, 1990 |
| A biological process taking place in the body is called in vivo; in glass it's called this |
in vitro |
300 |
October 9, 1990 |
| These 1-celled fungi feed on sugar & convert it into CO |
yeast |
400 |
October 9, 1990 |
| The bumps seen here are these, arranged one by one over a 22-hour period by scientists at an IBM lab |
individual atoms |
|
October 9, 1990 |
| A magnetron is used to generate this type of energy that can transmit sound, or cook |
microwave energy |
100 |
September 6, 1990 |
| Studying data from one of these occurrences, Mohorovicic discovered the crust-mantle boundary |
earthquakes |
200 |
September 6, 1990 |
| Used in making soap & margarine, copra is the dried meat of this |
the coconut |
300 |
September 6, 1990 |
| The small explosive device that sets off the main explosive charge |
the primer (detonator) |
400 |
September 6, 1990 |
| Also called gristle, found between your vertebrae, & also shapes your ears & nose |
cartilage |
500 |
September 6, 1990 |
| In computerese, a "vaccine" is a program that seeks out & destroys these |
computer viruses |
100 |
May 9, 1990 |
| A compass points toward this north pole |
magnetic north pole |
200 |
May 9, 1990 |
| Varieties of these simple plants include red, brown, green & blue-green |
algae |
300 |
May 9, 1990 |
| Behaviorists & dogs drool over the work of this Russian physiologist |
Ivan Pavlov |
400 |
May 9, 1990 |
| The most abundant metal on Earth, when it was discovered in 1820 it was worth more than gold |
aluminum |
500 |
May 9, 1990 |
| An ophthalmologist specializes in this part of the body |
the eye |
100 |
March 7, 1990 |
| Dry ice is CO2, & regular ice is this |
H<sub>2</sub>O |
200 |
March 7, 1990 |
| To make this cushioning material, whip latex into a froth, then gel & vulcanize it |
foam rubber |
300 |
March 7, 1990 |
| Term for a space in which there are no atoms or molecules; a perfect one is unobtainable |
a vacuum |
400 |
March 7, 1990 |
| When astronauts talk of "re-entry", this is what they re-enter |
the atmosphere |
500 |
March 7, 1990 |
| A little harder than talc, but not as hard as calcite, gypsum is this number on the Mohs scale |
2 |
100 |
December 15, 1989 |
| Precambrian time began with this & continued until the 1st appearances of life on Earth |
the creation of Earth |
200 |
December 15, 1989 |
| Warning! Warning! Your litmus paper has just turned red, indicating this type of solution |
acid |
300 |
December 15, 1989 |
| The Dewey Decimal System is based on the number 10 & the duodecimal system on this number |
12 |
400 |
December 15, 1989 |
| Formerly used in making film, it was the 1st commercial synthetic plastic |
celluloid |
500 |
December 15, 1989 |
| The mother of a mule |
Horse (Mare) |
100 |
November 10, 1989 |
| It's another name for your coccyx |
Tailbone |
200 |
November 10, 1989 |
| Union Carbide makes this common car additive that contains ethylene glycol |
Antifreeze |
300 |
November 10, 1989 |
| This unit of measure in weather is abbreviated mb |
Millibar |
400 |
November 10, 1989 |
| Frenchman who discovered the Piezoelectric Effect, that certain crystals when stressed make electricity |
Pierre Curie |
500 |
November 10, 1989 |
| Aristotle taught that this was formed by rain reflecting the sun's rays |
a rainbow |
100 |
November 2, 1989 |
| The 2 places on Earth that are at 90o latitude |
the North & South Poles |
200 |
November 2, 1989 |
| In statistics normal distribution in an experiment produces a curve shaped like this object |
a bell |
300 |
November 2, 1989 |
| A bacterium called "Lactobacillus San Francisco" was isolated in 1973 on this kind of bread |
sourdough bread |
400 |
November 2, 1989 |
| Chromium compounds make a ruby red & an emerald this color |
green |
100 |
May 16, 1989 |
| On the Celsius scale, this is the melting point of ice |
0 |
200 |
May 16, 1989 |
| Most light bulbs don't contain a vacuum or oxygen but this gas whose symbol is Ar |
argon |
300 |
May 16, 1989 |
| The Pythagorean theorem only applies to this type of triangle |
a right triangle |
400 |
May 16, 1989 |
| This light metal is the most abundant metal in the earth's crust |
aluminum |
500 |
May 16, 1989 |
| In 1669 Nicolaus Steno found that the oldest layers of rock are always in this location in sediment |
the bottom |
100 |
February 10, 1989 |
| By transpiration, some trees may lose a ton of this through their leaves in a single day |
water |
200 |
February 10, 1989 |
| A tungsten filament in a light bulb doesn't burn up because this has been removed from the bulb |
oxygen |
300 |
February 10, 1989 |
| Different ways this group of animals can move include concertina, undulation & sidewinding |
snakes |
400 |
February 10, 1989 |
| Known for its longed ringed tail, it's kept as a house pet in Madagascar |
a lemur |
500 |
February 10, 1989 |
| If you want to hard-boil this bird's egg, set your timer for about 2 hours |
ostrich |
100 |
January 20, 1989 |
| Pollen grains are made in the anther of this, the male part of a flower |
stamen |
200 |
January 20, 1989 |
| It's an alloy that contains 7.5% copper & 92.5% silver |
sterling silver |
300 |
January 20, 1989 |
| 1 of the 1st devices used to store an electric charge, this jar was named for a Dutch city |
Leyden jar |
400 |
January 20, 1989 |
| This steel-making process involved blowing air through molten iron to oxidize impurities |
(Sir Henry) Bessemer |
500 |
January 20, 1989 |
| In order to see a rainbow, this should be at your back |
the Sun |
100 |
December 19, 1988 |
| Minimum number of lenses you need to make a simple refracting telescope |
2 |
200 |
December 19, 1988 |
| This soft, white form of limestone is formed from the remains of small marine creatures |
chalk |
300 |
December 19, 1988 |
| Term for the thin tungsten wire in a light bulb that glows when heated |
filament |
400 |
December 19, 1988 |
| A tube or hose utilizing atmospheric pressure to transfer liquid from one level to a lower one |
a siphon |
500 |
December 19, 1988 |
| After O, it's the next most common bloodtype among Americans |
A |
100 |
December 6, 1988 |
| Galileo found the swinging of one of these was regular enough to keep time |
pendulum |
200 |
December 6, 1988 |
| It can mean the act of liquifying by heat or the joining of atomic nuclei |
fusion |
300 |
December 6, 1988 |
| 1 of the 2 types of cells that make up the brain |
neurons (and glia) |
400 |
December 6, 1988 |
| Casein, the main protein in this liquid, is used to make buttons |
milk |
500 |
December 6, 1988 |
| The 1st solvent widely used by modern dry cleaners, it was unleaded |
gasoline |
100 |
October 28, 1988 |
| It's the solar system's 2nd largest planet |
Saturn |
200 |
October 28, 1988 |
| Depending on the length of the path this takes, thunder might be a short clap or a long rumble |
lightning |
300 |
October 28, 1988 |
| 20th century Austrian zoologist Karl von Frisch discovered the dance of these insects |
bees |
400 |
October 28, 1988 |
| It's the special field of computer science trying to come up with machines that think for themselves |
artificial intelligence |
500 |
October 28, 1988 |
| "Hydrohily" is pollination where the pollen is carried by this |
water |
100 |
June 27, 1988 |
| Newton's 1st law of motion states an object continues in this state unless acted on by an external force |
at rest |
200 |
June 27, 1988 |
| Type of physicist who works with a linear accelerator |
particle physicist (nuclear physicist) |
300 |
June 27, 1988 |
| It's the study of the motion & behavior of projectiles, including bullets |
ballistics |
400 |
June 27, 1988 |
| Viruses are encased in a coat of this nutrient |
protein |
500 |
June 27, 1988 |
| The decimal numbering system uses this number as its base |
10 |
100 |
May 12, 1988 |
| This discharge can be produced in snowstorms, sandstorms & volcanic clouds as well as thunderstorms |
lightning |
200 |
May 12, 1988 |
| If you degauss something, you neutralize this type of field |
magnetic |
300 |
May 12, 1988 |
| In units of force, "N", named after a noted English scientist, stands for this |
Newton |
400 |
May 12, 1988 |
| One was erected on California's Mt. Hamilton in the 1880s with an endowment from James Lick |
telescope (observatory) |
500 |
May 12, 1988 |
| The skin of an albino lacks this quality |
pigment |
100 |
May 6, 1988 |
| Some mistakenly believe the mass migrations of these rodents always end in suicide by drowning |
lemmings |
200 |
May 6, 1988 |
| It's the clear, almost colorless, liquid part of the blood, or the highly ionized "4th state" of matter |
plasma |
300 |
May 6, 1988 |
| These animals have actually built islands in the sea |
coral |
400 |
May 6, 1988 |
| It's -459.67° F or -273.15° C |
absolute zero (zero Kelvin) |
500 |
May 6, 1988 |
| Something described as argentiferous contains or produces this metal |
silver |
100 |
March 29, 1988 |
| Of Andy Panda, Mickey Mouse or Droopy Dog, 1 who belongs to most numerous order of mammals |
Mickey Mouse |
200 |
March 29, 1988 |
| A lunar one of these is equivalent to 29.53 days, a solar one, 30.43 |
a month |
300 |
March 29, 1988 |
| It's the opposite of a planet's aphelion |
perihelion |
400 |
March 29, 1988 |
| Greek letter identifying the antibody-bearing globulin in blood protein |
gamma |
500 |
March 29, 1988 |
| Like monkeys & squirrels, the coconut crab is able to do this in search of food |
climb (trees) |
100 |
March 9, 1988 |
| Lava & pyroclastic rocks are examples of this class of igneous rocks |
volcanic rocks |
200 |
March 9, 1988 |
| A conjunction of the Sun, Earth, & Moon can only occur during this phase of the Moon |
a new moon |
300 |
March 9, 1988 |
| In 1858, Alfred Wallace & Charles Darwin each proposed theories of evolution based on this |
natural selection |
400 |
March 9, 1988 |
| The word science comes from the Latin "scientia", which means having this |
knowledge |
500 |
March 9, 1988 |
| After about eight weeks, a human embryo develops into this |
a fetus |
300 |
November 19, 1987 |
| At about 63,000 ft. at normal body temperature, blood will do this |
boil |
400 |
November 19, 1987 |
| Because they are never found in chemical compounds, the noble gases neon, argon & helium are called this |
the inert gases |
500 |
November 19, 1987 |
| Of fresh, brackish, or salt water, the 1 in which it's easiest to float |
salt water |
100 |
October 19, 1987 |
| It strikes the Earth about 100 times each second & kills about 100 Americans each year |
lightning |
200 |
October 19, 1987 |
| Snowshoe rabbits & jack rabbits are not really rabbits but these animals |
hares |
300 |
October 19, 1987 |
| Ferns don't grow from seeds but from these |
spores |
400 |
October 19, 1987 |
| Any 2 chemical elements whose symbol begins with a letter other than that beginning its English name |
lead* & antimony** |
|
October 19, 1987 |
| Just as silver rods tarnish, iron rods do this |
rust |
100 |
September 22, 1987 |
| The electromagnetic waves abbreviated "UV" |
ultraviolet |
200 |
September 22, 1987 |
| Speeds are subsonic below or supersonic above this Mach number |
1 |
300 |
September 22, 1987 |
| Something described as "brackish" contains this substance |
salt |
400 |
September 22, 1987 |
| During smelting, it's the waste material floating on top of the molten metal |
slag |
500 |
September 22, 1987 |
| In the platypus, this is secreted through pores in the mother's abdomen & lapped up by the young |
milk |
100 |
March 5, 1987 |
| Only the earth has greater density than this small planet |
Mercury |
200 |
March 5, 1987 |
| Of the Paleozoic, Mesozoic, or Cenozoic, the geological era we are in |
Cenozoic |
300 |
March 5, 1987 |
| Term for the science of inherited traits |
genetics |
400 |
March 5, 1987 |
| The name for this gas comes from the French for "water former" |
hydrogen |
500 |
March 5, 1987 |
| Bioluminescence is the emission of this from living organisms |
light |
100 |
February 2, 1987 |
| Robotics is related to this "6 million dollar" field of science |
bionics (or cybernetics) |
200 |
February 2, 1987 |
| Of a quartan, joule, or kilocalorie, the one that is not a unit of energy |
a quartan |
300 |
February 2, 1987 |
| Element represented by the letters "Cu" |
copper |
400 |
February 2, 1987 |
| Term for the blood vessels which take the blood from the heart |
arteries |
100 |
December 31, 1986 |
| In the scientific categories, Americans have won 142, or 38%, of these awards 1st given in 1901 |
Nobel Prizes |
200 |
December 31, 1986 |
| The Hubble constant tells how fast the universe is expanding since this "noisy" event occurred |
the Big Bang |
300 |
December 31, 1986 |
| Base 10 equivalent to the binary number "11" |
3 |
400 |
December 31, 1986 |
| A metal that is "ductile" can be pulled into this while cold & under pressure |
wire |
500 |
December 31, 1986 |
| The only animal that has walked on the moon |
man |
100 |
January 9, 1986 |
| Not just "Ludwig von" but any male duck |
Drake |
200 |
January 9, 1986 |
| Research shows a mother eating a candy bar before doing this helps a baby fall asleep quicker |
nursing |
300 |
January 9, 1986 |
| Partly frozen rain or rain mixed with snow |
sleet |
400 |
January 9, 1986 |
| If our solar system fit into a cup, our galaxy would be the size of this 3rd largest continent |
North America |
500 |
January 9, 1986 |
| Most living organisms have millions, but a prisoner only has one |
a cell |
100 |
October 4, 1985 |
| A 5th C. B.C. Greek philosopher was 1st to theorize that all matter is made of these |
atoms |
200 |
October 4, 1985 |
| Term for creatures like vultures or hermit crabs that eat carcasses & refuse |
a scavenger |
300 |
October 4, 1985 |
| Days & nights are always 12 hours long there |
the equator |
400 |
October 4, 1985 |
| If you're studying mensuration, you're studying this |
measurement |
500 |
October 4, 1985 |
| A typical snowflake has this many sides |
6 |
100 |
December 10, 1984 |
| Common element whose refined forms include pig, cast or wrought |
iron |
200 |
December 10, 1984 |
| After length, width & depth, the 4th dimension |
time |
300 |
December 10, 1984 |
| Type of organism that lives off of another, contributing nothing |
a parasite |
400 |
December 10, 1984 |
| Shattering sound that accompanies breaking the sound barrier |
a sonic boom |
500 |
December 10, 1984 |
| A sound's repetition by reflection |
an echo |
100 |
November 29, 1984 |
| He originated "The Origin of Species" |
Charles Darwin |
200 |
November 29, 1984 |
| Singular form of the word "bacteria" |
bacterium |
300 |
November 29, 1984 |
| Negative particle that orbits an atom's nucleus |
an electron |
400 |
November 29, 1984 |
| Cytology is the study of these biological building blocks |
cells |
500 |
November 29, 1984 |