IAC Question Database

2021-ES-Nationals-Science-Bee-Finals.pdf

Question Answer
Many members of this order contain a structure called amelon,whichhouses the spermaceti [[sper-mah-SEH-tee]] organ. Filter-feeding members of this order possess keratin plates called (+) baleen [[BAY-leen]]. Members of this order breathe through a specialized nostril on their backs called a (*) blowhole. For the point, name this order of marine mammals that includes porpoises,dolphins, and whales. Cetaceans [[see-TAY-shuns]]
(acceptWhalesbefore mentioned; prompt on "dolphin" or "porpoise" before mentioned)
These periods involve paradigm shifts as described in Thomas Kuhn’s [[KYOONS]] The Structure of [this sort of period]. Along with the Renaissance, one of these periods is held to have not been a radical break from the Middle Ages in the "continuity thesis." The (+) publication of Copernicus's theories is considered the beginning of (*) one of, for the point, what type of social era, which included the development of modern biology and chemistry? Scientific Revolutions
(prompt on "CopernicanRevolution")
For an ideal block and tackle setup, this quantity is equal to the number of rope sections supporting the block. For a wedge, this quantity is inversely proportional to the wedge's slope. Thisquantity(+)isdemonstratedbythelawofthe lever, which relates opposing weights and arm length. Used to measure the effectiveness of simple (*)machines, for the point,what is this output force to input force? Mechanical Advantage
Chiral [[KY-rull]] symmetry breaking and asymptotic [[AY-simp-TAH-tik]] freedom are among the properties of the quantum chromodynamics theory of this force, which confines smaller particles intohadrons.Thisforce,whosemagnitude(+) increases with distance, is mediated by gluons. Binding together neutrons and protons in the (*) nucleus, for the point, what is this fundamental force which is much more powerful than the weak force? StrongNuclear Force
(orStrongInteraction;orColorForce; prompt on "quantum chromodynamics" before mentioned)
These phenomena were lessfrequentduringtheSpörerandMaunderMinima. The position of these phenomena predicts the location of coronalloopsandsolar(+) flares. The frequency of these phenomena varies on an eleven-year cycle which corresponds to the reversal ofamagneticfield.Foundonthesurfaceofthe(*)sun,for the point, what are these temporary darkerregionssometimesvisiblefromEarthwithouta telescope? Sunspots
In his book How to Live Longer and Feel Better, this scientist advocated taking megadoses of vitamin C to prevent the common cold. This scientist outlined the modern understanding of an atom's tendency to attract (+) shared electrons in his book The Nature of the Chemical Bond. The Nobel Prize in Peace and Chemistry (*) were given to, for the point, what American scientist? LinusPauling
(or Linus CarlPauling)
Due to having temperatures near the surface ofthesun,thisregionpassesthe Curie temperature and is not ferromagnetic. This layer, whose existence is demonstrated by (+) PKiKP waves, is composed ofasolidiron-nickelalloy.Theliquid outer core (*)surrounds, for the point, what solidmetal layer of the Earth? Inner Core
(prompt on "core"; do not acceptor prompt on "outer core")
This scientist discovered the elements cesium [[SEE-zee-um]] and rubidium [[roo-BIH-dee-um]] with Gustav Kirchhoff [[KEER-kof]]. This scientist lendshisname to a device that manipulates airflow at the (+) top and fuel supply at the bottom to control combustion rate. A common type of open-flame (*) burner is namedfor,forthe point, what German chemist? RobertBunsen
(or Robert Wilhelm EberhardBunsen; acceptBunsenBurner)
For an object to beinstaticequilibrium,thisforce'smetacentermustbeabove the center of gravity. This force, which equals density times gravity times volume, is opposed by the hydrostatic pressure gradient. This force equals the weight ofthe(+) fluidthatisdisplacedaccordingtotheArchimedesprinciple.Objectsfloatinliquid(*) due to, for the point, what force? Buoyantforce
(orBuoyancy; acceptUpthrust)
In their simplest form, these devices possess a vertical portion, the gnomon [[NOH-mon]], and a horizontal portion, the style. Along with specialized candles and water (+) drip clocks, these were among the earliest devices to mark the timeofday. The position of shadows is (*) used in, for the point, what devices that determine the time? Sundial
Large circular holes in these objects are calledmoulins[[MOO-lins]].Deposits created by these objects include eskers and drumlins. Cirques [[SIRKS]], fjords (+), and moraines were created by the retreat of these objects which break down at the coast via calving [[KAV-ing]], forming (*) icebergs. Greenland and Antarcticaarecovered in, for the point, what massive ice formations? Glaciers
(prompt on "glacial lake")
Patients who fail to develop this structure may develop Probst bundles to compensate. Damage to this structure can result in alien hand syndrome or Dr. Strangelove syndrome. This structure has a Latin name meaning "tough (+) body." This structure is severed in patients who undergo a split brain procedure, which is sometimesusedtotreatepilepsy.Thetwohemispheres(*)ofthebrainarelinkedby,for the point, what structure? Corpus Callosum
(orCallosal Commissure)
These objects can form when an empty cavity, such as a gas bubble, is filled with groundwater that deposits crystalline minerals. These (+) objects are smaller analogs to vugs and crystal caves. Coming from the Greek word for “Earth-Like,” (*) for the point, what are these hollow rocks containingcrystals? Geode
A type of scattering found in these substances can give a blue appearance to motorcycle smoke or flour mixed into water. These substances, which exhibit the Tyndall effect, include emulsions and aerosols. (+) Common examples of these substances include milk, fog, and foam. Insoluble particles are suspended (*) within another in, for the point, what type of mixture? Colloid
(acceptColloidal Suspension; prompton "suspension")
One sessile [[SESS-ile]] clade [[KLAYD]] in this phylum has a symbiotic relationship with clownfish, providing shelter in exchange for cleaning. This (+) phylum is characterized by a specialized type of cell that releases stinging toxins on contact. Sea Anemone, (*) Jellies, and Coral are all a part of, for the point, which animal phylum? Cnidarians [["nigh"-"DARE"-ee-uns]]
(prompt on "Jellies"; be lenient on pronunciation)
A loop example of these materials is called a Josephson junction.Throughthe Meissner effect, these materials expel magnetic field lines. The BCS theory of these materials posits that phonons (+) mediate the bindingofelectronsintoCooperpairs. Lacking electrical (*) resistance, for the point, what are these materials with a “high temperature” variety? Superconductor
(acceptSuperconductivity;prompt on "conductor")
When oxygen is present, this protein produces phosphoglycolate [[foss-foh-gly-KOH-"late"]] and 3-phosphoglycerate [["three" foss-foh-GLIH-seh-"rate"]]. In C4 plants, this protein has reduced specificity and is located in the bundle (+) sheath cells. This protein is the most abundant enzyme on Earth and catalyzes the start of the Calvin cycle. The carboxylation of RuBP in photosynthesis (*)occurs due to, for the point, whatmajor enzyme? RuBisCO [[roo-BIH-skoh]]
(or RuBPCase; or RuBPco; accept Ribulose-1,5-bisphosphate carboxylase/oxygenase)
An autoclave uses "wet-heat" toleveragehydrolysis[["high"-DRAH-lih-siss]]to perform this task on glassware, rendering it aseptic. 70 percent (+) is the most effective concentration of isopropyl [["eye"-soh-PROH-pil]] alcohol for performing this task. The killing of microorganismsonlab(*)equipmentandothersurfacesisdone through, for the point, what method? Sterilization
(accept word forms and answerssuch as "makingsterile; accept answers indicating "killing microorganism" beforementioned; prompt on answers such as "cleaning")
When originally discovered, these objects were nicknamed "LGM," or little green men.OneofthesebodiesintheCrabNebulaemitsX-rays.Thesebodiesareonly detectable if one of their (+) poles points toward the Earth. Named for periodically emitting bursts of radio (*) waves, for the point, what are these rapidly rotating neutron stars? Pulsar
(acceptPulsating RadioSource; prompton "Little Green Men" or "LGM" before mentioned; prompt on "Neutron Star" beforementioned)
When this process occurs over a single geographic range, it is termed "sympatric." The allopatrictypeofthisprocessoccursduetogeographic(+)isolation, and new branches on phylogenetic [[FY-loh-"genetic"]] trees are formed by this process. The inability of two populations of organisms to (*) breediscausedby,forthe point, what ecological process? Speciation
(accept Centrifugal Speciation; accept Sympatric Speciation; accept Allopatric Speciation; accept Peripatric Speciation; accept Parapatric Speciation; prompt on "Evolution")
Torque is equal to the moment of inertia multiplied by the tangential form of this quantity. In general relativity, it is impossible to distinguish between (+) forces caused by gravity and thisquantity.Oftenmeasuredinunitsper(*)metersquared, for the point, what is this quantity measuring rate ofchange in velocity? Acceleration
(accept Centripetalacceleration;accept Tangentialacceleration)
The cantilevered type of these objects are supported only from one end. One common type oftheseobjectshastwohorizontalflanges[[FLAN-jeez]]connectedbya vertical (+) web, known as the "I" type of these objects. Having much greater length (*)than width, for the point, what are these fundamentalstructural components? Beam
(accept Cantileveredbeam; accept I-beam)
One algorithm for this task that uses paired comparisons is named after garden gnomes.Exchange-basedalgorithmsforthistaskhaveaworst-caseruntimeof "Big O [[OH]] of n (+) squared." Commonalgorithmslikebubble,quick,andmerge(*) name types of, for the point, what task of organizingan array or list into a desired order? Sorting
(orSorting algorithm; accept Bogo,Gnome, Exchange, Bubble, Quick, or MergeSort)
This man's proof of the fundamental theorem of algebra wascreatedtorefute D'Alembert's [[dah-lem-BEHRS]] false proof. This man names a theorem relating the electric field to the charge (+) distribution, and this man also names a distribution shaped like a bell curve. The Normal Distribution (*) is named for, for the point, what German mathematician? Johann Carl FriedrichGauss
(acceptGaussiancurve or curvature; acceptGauss's law or flux theorem; acceptGaussian distributionorGauss's distribution; accept Laplace-Gaussdistribution)
This constellation contains a notable binary system made of Mizar [["MY"-zar]] and Alcor. Major stars in this constellation include Dubhe [[DOO-beh]] and (+) Merak [[MEE-rak]], which can be used to locate Polaris in another constellation. The (*) “Big Dipper” is found in, for the point, what northern hemisphere constellation? Ursa Major
(orGreat Bear; acceptUrsa MajorMoving Group orUrsa Major Association; prompt on the "Big Dipper" before read;prompt on "the Plough")
Along with placozoa [[play-koh-ZOH-ah]], this is the only animal phylum to lack true, differentiated tissues. This phylum is usually (+) consideredtobethemost basal animal lineage, making it the sister taxon to all other (*) animals. For the point, name this simple animal phylum, which contains sponges. Porifera
(prompt on "sponges" before mentioned)
Due to this phenomenon, changes in wind velocity can cause a hook echo on weather radar. This phenomenon's namesake radar is used by police (+) radar guns to determine a car's velocity. This phenomenon is visualized with the bunching of waves in front of a moving source. (*) Redshift is caused by, for the point, what phenomenon in which a pitch shifts with movement,as with a siren driving by? Dopplereffect
(orDopplershift; acceptDopplerradar; prompt on "red shift" or "blue shift" before mentioned)