Sample-Set-3
TOSS-UP 22) MATH Short Answer Factor the following polynomial over the integers: 49x2 - 64
ANSWER: (7x + 8)(7x - 8)
TOSS-UP 1) MATH Short Answer Three points on a graph are connected by lines to form a triangle. If the center of dilation is the origin and one of the points is (4, 6), what is the new point for a dilation factor of 2?
ANSWER: (8, 12)
BONUS 7) MATH Short Answer Solve the following inequality for x: ⏐2x - 3⏐ < 9 (read as: open absolute value, 2x minus 3, close absolute value, is less than 9)
ANSWER: -3 < x < 6 (ACCEPT: X IS GREATER THAN -3 AND LESS THAN 6)
TOSS-UP 8) MATH Short Answer Evaluate the following radical: - ( 144 ) 9
ANSWER: -4
BONUS 17) MATH Short Answer Give the third term in the binomial expansion of the following: (x + y)5
ANSWER: 10x3y2
TOSS-UP TOSS-UP 3) MATH Short Answer How many faces does a dodecagon have?
ANSWER: 12
BONUS 22) MATH Short Answer Consider a distribution of 7 scores with a median of 20. If the lowest score value is decreased by 4, what will the new median value be for this distribution of 7 scores?
ANSWER: 20 2007 Middle School Regional Science Bowl - Round 13 Page 11
BONUS 13) MATH Short Answer Express the following radical in its simplest radical form if all variables represent positive quantities: 5 (16a 2 b 4 c)
ANSWER: 20ab 2 c
BONUS 5) LIFE SCIENCE Short Answer Meiosis is typically divided into meiosis 1 and meiosis 2. In a typical human egg cell, how many chromosomes will it have in each cell after meiosis 1?
ANSWER: 23
BONUS 18) MATH Short Answer What is the surface area of a closed box, in centimeters, with a width of 6, height of 4, and length of 10 centimeters, respectively?
ANSWER: 248 2007 Middle School Regional Science Bowl - Round 12 Page 9
TOSS-UP TOSS-UP 13) MATH Short Answer Give the numerical value of 25 factorial divided by 24 factorial:
ANSWER: 25
TOSS-UP TOSS-UP 21) PHYSICAL SCIENCE Short Answer Assuming a planet has a gravitational force of 5 meters per second squared, what would an object's weight be, in newtons, if it has a specific gravity of 2 and a mass of 5 kilograms?
ANSWER: 25
BONUS 2) MATH Short Answer Give the height, to the nearest whole meter, of the triangle that has an area of 54 square meters and whose base is 4-times its height:
ANSWER: 5 2007 Middle School Regional Science Bowl - Round 13 Page 1
TOSS-UP TOSS-UP 7) MATH Short Answer Add the following radicals, giving your answer in simplest radical form: 3 3 + 12
ANSWER: 5 3
BONUS 21) EARTH SCIENCE Short Answer A third quarter moon has what percent of its surface appearing to be illuminated to an observer on Earth?
ANSWER: 50
BONUS 10) PHYSICAL SCIENCE Short Answer How many grams of sodium chloride are in 300 grams of a 20% solution, if the atomic masses of sodium and chloride are 23 and 35, respectively?
ANSWER: 60 2007 Middle School Regional Science Bowl - Round 13 Page 5
TOSS-UP 2) MATH Short Answer Add and simplify the following 2 polynomials, giving your answer in standard form: (9 x 3 + 6 x 2 + 10 x) + (!3 x 3 + 9 x ! 10 x 2 )
ANSWER: 6x3 - 4x2 + 19x
BONUS 3) MATH Short Answer Find the sum of all interior angles, in degrees, in a regular hexagon:
ANSWER: 720
BONUS 21) PHYSICAL SCIENCE Short Answer What is the mass, in grams, of a bag of beans that weighs 90 newtons if the force of gravity is assumed to be 10 meters per second squared?
ANSWER: 9,000
BONUS 25) LIFE SCIENCE Short Answer What specific human gland is the primary production site of epinephrine?
ANSWER: ADRENAL GLAND
TOSS-UP TOSS-UP 13) GENERAL SCIENCE Short Answer From what continent do more than 80% of the weather systems originate which become tropical storms or hurricanes that reach the U.S. eastern and southern shores?
ANSWER: AFRICA
BONUS 23) MATH Short Answer Today, Ted is 3-times as old than Alice. In 6 years from now, Ted will be twice as old as Alice will be. How many years old, respectively, are Alice and Ted today?
ANSWER: ALICE = 6; TED = 18
TOSS-UP TOSS-UP 23) GENERAL SCIENCE Short Answer What is the most common name of the object in outer space that has a gravitational field so strong that light cannot escape from it?
ANSWER: BLACK HOLE
BONUS 15) PHYSICAL SCIENCE Short Answer Name all of the following 3 pairs of elements that would be chemically bonded by a covalent bond: carbon and carbon; magnesium and chlorine; silicon and oxygen
ANSWER: CARBON AND CARBON; SILICON AND OXYGEN
TOSS-UP 24) GENERAL SCIENCE Short Answer If solid dry ice is placed in a sealed sandwich bag at room temperature, the bag quickly expands because of the release of what gas?
ANSWER: CARBON DIOXIDE (ACCEPT: CO2)
BONUS 14) LIFE SCIENCE Short Answer In the human eye, what type of light receptor is most densely populated at the fovea (read as: FOE-vee-ah)?
ANSWER: CONES 2007 Middle School Regional Science Bowl - Round 13 Page 7
BONUS 25) PHYSICAL SCIENCE Short Answer Name all of the following 5 choices that are NOT a form of electromagnetic radiation: radio waves; gamma-rays; cosmic rays; infrared light; ultrasound waves
ANSWER: COSMIC RAYS AND ULTRASOUND WAVES
BONUS 4) LIFE SCIENCE Short Answer Order the following from the part nearest to the START of the human digestive system to the part nearest the END: ileum; esophagus; duodenum; jejunum
ANSWER: ESOPHAGUS; DUODENUM; JEJUNUM; ILEUM 2007 Middle School Regional Science Bowl - Round 13 Page 2
TOSS-UP TOSS-UP 19) LIFE SCIENCE Short Answer What insect is used the most in experiments studying genetics and development?
ANSWER: FRUIT FLY (ACCEPT: DROSOPHILA MALANOGASTER OR DROSOPHILA)
TOSS-UP 22) EARTH SCIENCE Short Answer Which 2 of the following 5 choices are sedimentary rocks formed as the result of evaporation and precipitation: gypsum; marble; rock salt; gneiss; diorite
ANSWER: GYPSUM; ROCK SALT
BONUS 23) GENERAL SCIENCE Short Answer Both the Sun and the Gas Giants in our Solar System are composed primarily of what 2 elements?
ANSWER: HYDROGEN AND HELIUM
BONUS 11) PHYSICAL SCIENCE Short Answer Which 2 of the following 4 elements are most easily magnetized at room temperature: iron; copper; nickel; aluminum
ANSWER: IRON AND NICKEL
BONUS 2) EARTH SCIENCE Short Answer What is the specific name for ridges of the giant accumulations of glacial till that form along the outer sides or edges of an alpine glacier?
ANSWER: LATERAL MORAINES (DO NOT ACCEPT: MORAINE) 2007 Middle School Regional Science Bowl - Round 12 Page 1
TOSS-UP 24) LIFE SCIENCE Short Answer Bile is produced by what organ of the human body?
ANSWER: LIVER
BONUS 24) GENERAL SCIENCE Short Answer Name the gas that has a very high partial pressure in air and is the main problem in decompression sickness, commonly known as the bends, that can happen to deep-sea divers if they swim to the surface too quickly?
ANSWER: NITROGEN 2007 Middle School Regional Science Bowl - Round 12 Page 12
BONUS 18) GENERAL SCIENCE Short Answer Fertilizers typically have 3 numbers such as 5, 10, 5. What are the chemical elements that represent these numbers, in any order?
ANSWER: NITROGEN; PHOSPHOROUS; POTASSIUM (ACCEPT: N; P; K) 2007 Middle School Regional Science Bowl - Round 13 Page 9
BONUS 9) LIFE SCIENCE Short Answer The basic parts of ribosomes are manufactured in what specific part of a eukaryotic cell?
ANSWER: NUCLEOLUS (DO NOT ACCEPT: NUCLEUS)
BONUS 6) PHYSICAL SCIENCE Short Answer Name all of the following 4 choices that contain ionic bonds: NaCl; O2; KBr; CO2
ANSWER: NaCl; KBr 2007 Middle School Regional Science Bowl - Round 12 Page 3
TOSS-UP 10) LIFE SCIENCE Short Answer What is the anatomical term for the nerves in humans that conduct messages from the eyes to the brain?
ANSWER: OPTIC
BONUS 5) PHYSICAL SCIENCE Short Answer Order the following 3 particles from the one with the LEAST mass to the one with the MOST mass: electron; neutron; photon
ANSWER: PHOTON; ELECTRON; NEUTRON
TOSS-UP TOSS-UP 25) LIFE SCIENCE Short Answer Of the four general types of biological molecules, proteins, carbohydrates, lipids and nucleic acids, under which one would insulin be categorized?
ANSWER: PROTEINS
BONUS 10) LIFE SCIENCE Short Answer What is the scientific name for the veins in humans that return oxygen rich blood to the heart?
ANSWER: PULMONARY 2007 Middle School Regional Science Bowl - Round 12 Page 5
TOSS-UP 14) LIFE SCIENCE Short Answer What structure of the human eye is primarily responsible for regulating the amount of light that enters the eye?
ANSWER: PUPIL
TOSS-UP TOSS-UP 9) LIFE SCIENCE Short Answer What cellular organelle most directly functions to help match the tRNA to the correct place on the mRNA and allows the growing of a protein?
ANSWER: RIBOSOME
BONUS 8) GENERAL SCIENCE Short Answer In a 2nd degree burn, what is the name of the fluid that quickly forms beneath the blister?
ANSWER: SERUM (ACCEPT: SEROUS FLUID) 2007 Middle School Regional Science Bowl - Round 13 Page 4
TOSS-UP TOSS-UP 23) MATH Short Answer What are the exact lengths, in centimeters, of the shorter and longer legs, respectively, of a 30-60-90 degree right triangle if the length of the hypotenuse is 12 centimeters?
ANSWER: SHORTER LEG = 6; LONGER LEG = 6 3
BONUS 22) EARTH SCIENCE Short Answer As viewed from Earth, what is the proper name for the brightest-appearing star in the night sky of mid northern latitudes?
ANSWER: SIRIUS 2007 Middle School Regional Science Bowl - Round 12 Page 11
BONUS 24) LIFE SCIENCE Short Answer Into what human organ does the gall bladder release bile?
ANSWER: SMALL INTESTINE (ACCEPT: DUODENUM) 2007 Middle School Regional Science Bowl - Round 13 Page 12
TOSS-UP TOSS-UP 21) EARTH SCIENCE Short Answer Order the following 4 minerals from the SOFTEST to the HARDEST: fluorite; gypsum; talc; calcite
ANSWER: TALC; GYPSUM; CALCITE; FLUORITE
TOSS-UP TOSS-UP 25) PHYSICAL SCIENCE Short Answer Name all of the following 3 choices that affect the speed of sound in a substance: temperature; density; elasticity
ANSWER: TEMPERATURE; DENSITY; ELASTICITY (ACCEPT: ALL OF THEM)
TOSS-UP 12) MATH Multiple Choice If k is an integer greater than 1, which of the following is greater than 1: W) -(-k)3 Read as: negative - open parenthesis - negative k - closed parenthesis - to the third power X) -(k)3 Read as: negative - open parenthesis - k - closed parenthesis - to the third power Y) (k ) Z) ! k ! 1 3 3 Read as: open parenthesis - k - closed parenthesis - to the negative one-third power Read as: negative - open absolute value - k - closed absolute value - to the third power
ANSWER: W) -(-k)3
BONUS 15) LIFE SCIENCE Multiple Choice Which of the following is a common excitatory neurotransmitter in mammals: W) acetylcholine X) insulin Y) estrogen Z) glycine
ANSWER: W) ACETYLCHOLINE
TOSS-UP 10) PHYSICAL SCIENCE Multiple Choice Which of the following is NOT true about boiling liquids: W) all boiling liquids are too hot to touch X) the boiling point of pure water at standard pressure is 373.15 kelvin Y) the boiling point of a liquid depends on the surface pressure above the liquid Z) adding a handful of table salt to a quart of boiling water will change its boiling point
ANSWER: W) ALL BOILING LIQUIDS ARE TOO HOT TO TOUCH
BONUS 11) EARTH SCIENCE Multiple Choice Coral reefs capture about half of all calcium flowing into the ocean every year by fixing it into: W) calcium carbonate X) calcium fluoride Y) calcium oxalate Z) quartz
ANSWER: W) CALCIUM CARBONATE
TOSS-UP 2) EARTH SCIENCE Multiple Choice A high-pressure weather system is typically associated with which of the following conditions: W) cool with high thin clouds X) cool with nimbostratus clouds Y) warm with moderate overcast Z) warm with cumulonimbus clouds
ANSWER: W) COOL WITH HIGH THIN CLOUDS
TOSS-UP TOSS-UP 9) GENERAL SCIENCE Multiple Choice Which of the following is the MAIN advantage of the LED, or light emitting diode, versus the conventional incandescent lamp: W) efficiency X) size Y) they can be made out of plastic Z) they are cheaper to manufacture
ANSWER: W) EFFICIENCY
TOSS-UP 18) GENERAL SCIENCE Multiple Choice The majority of sulfuric acid produced in the U.S. today is used to make which of the following: W) fertilizers X) glass Y) paint Z) plastics
ANSWER: W) FERTILIZERS
BONUS 3) GENERAL SCIENCE Multiple Choice MTBE or methyl tertiary butyl ether, is a: W) gasoline additive X) organic dye Y) food preservative Z) plant alkaloid
ANSWER: W) GASOLINE ADDITIVE
BONUS 1) PHYSICAL SCIENCE Multiple Choice Which of the following is NOT a salt: W) potassium hydroxide X) potassium bromide Y) magnesium chloride Z) calcium carbonate
ANSWER: W) POTASSIUM HYDROXIDE
TOSS-UP 4) GENERAL SCIENCE Multiple Choice A recent 375-million year old fossil discovered in the upper reaches of Canada had many unusual features including a flat head with eyes on top and overlapping ribs. This was a major discovery because it is believed this: W) represents a missing link between fish and land vertebrates X) was the first juvenile Tyrannosaurus ever found in Canada Y) was an amphibian bird from the Cretaceous Period Z) supports vertebrates evolving first on land rather than at sea
ANSWER: W) REPRESENTS A MISSING LINK BETWEEN FISH AND LAND
BONUS 7) EARTH SCIENCE Multiple Choice Which of the following primarily influences the viscosity and therefore the explosivity of a magma: W) silica content X) gas content Y) temperature Z) pressure
ANSWER: W) SILICA CONTENT
BONUS 6) EARTH SCIENCE Multiple Choice Which of the following is TRUE about Earth's atmosphere: W) the upper mesosphere is the coldest region of the Earth's atmosphere X) the stratopause lies just below the stratosphere Y) moist air weighs more than dry air at the same temperature Z) the tropopause is higher at the South Pole than at the equator
ANSWER: W) THE UPPER MESOSPHERE IS THE COLDEST REGION OF THE EARTH'S 2007 Middle School Regional Science Bowl - Round 13 Page 3
TOSS-UP TOSS-UP 17) EARTH SCIENCE Multiple Choice Which of the following is the primary process by which colder ocean water loaded with nutrients rises to the surface: W) upwelling X) ocean swells Y) maelstroms Z) eddies
ANSWER: W) UPWELLING
TOSS-UP 6) PHYSICAL SCIENCE Multiple Choice Which of the following is typically TRUE: W) rare earth metals are also known as alkali metals X) a combustion reaction releases heat Y) noble gases are very reactive elements Z) a reaction in equilibrium cannot move forward or backward
ANSWER: X) A COMBUSTION REACTION RELEASES HEAT
BONUS 16) EARTH SCIENCE Multiple Choice Surface bedrock in British Columbia often has long, parallel scratches called striations. Which of the following is most likely TRUE about these markings: W) they were caused by seasonal freeze-thaw cycles X) a glacier once moved in the direction of these scratches Y) a swift river once ran through these areas Z) the area was once a pluvial lake
ANSWER: X) A GLACIER ONCE MOVED IN THE DIRECTION OF THESE SCRATCHES 2007 Middle School Regional Science Bowl - Round 13 Page 8
BONUS 19) GENERAL SCIENCE Multiple Choice Thyroid disease is typically thought of as: W) a blood disorder X) a metabolic disease Y) a digestive system disorder Z) an immune system disorder
ANSWER: X) A METABOLIC DISEASE
TOSS-UP TOSS-UP 3) GENERAL SCIENCE Multiple Choice Which of the following forms of coal typically has the HIGHEST BTU value per pound: W) lignite X) anthracite Y) bituminous Z) peat
ANSWER: X) ANTHRACITE
TOSS-UP 20) LIFE SCIENCE Multiple Choice Which of the following is the phylum to which organisms with large amounts of chitin belong: W) Anthophyta X) Arthropoda Y) Vertebrata Z) Ginkophyta
ANSWER: X) ARTHROPODA
TOSS-UP 4) LIFE SCIENCE Multiple Choice Which of the following is the BEST example of how evolution progresses: W) animals learn to survive through experience and teach their offspring X) certain mutations improve an organism's offspring's chances to survive and reproduce in different environments Y) animals develop certain strengths and weaknesses through experience and pass the knowledge down by example Z) an animal that is successful at hunting will be more likely to survive
ANSWER: X) CERTAIN MUTATIONS IMPROVE AN ORGANISM'S OFFSPRING'S
TOSS-UP TOSS-UP 7) EARTH SCIENCE Multiple Choice Which of the following is a volcano that is generally the smallest type, has very steep slopes, and would most likely result from a single violent eruption: W) stratovolcano X) cinder cone Y) shield volcano Z) lava dome
ANSWER: X) CINDER CONE
TOSS-UP TOSS-UP 5) PHYSICAL SCIENCE Multiple Choice Which of the following BEST describes the following reaction: 2CaO à 2Ca + O2 W) combustion X) decomposition Y) single replacement Z) double replacement
ANSWER: X) DECOMPOSITION
TOSS-UP TOSS-UP 11) EARTH SCIENCE Multiple Choice Which of the following is the BEST reason why the Earth's inner core is solid and the outer core is not: W) greater depths yield cooler temperatures X) greater depths yield higher pressures Y) inner core is further removed from the influence of hot magma Z) they have different mineral contents
ANSWER: X) GREATER DEPTHS YIELD HIGHER PRESSURES
TOSS-UP 16) PHYSICAL SCIENCE Multiple Choice Real images produced by a single lens are always: W) upright X) inverted Y) virtual Z) smaller
ANSWER: X) INVERTED
BONUS 9) GENERAL SCIENCE Multiple Choice Which of the following elements is essential to the human body for muscle and nerve function and maintaining fluid balance: W) iodine X) potassium Y) calcium Z) iron
ANSWER: X) POTASSIUM
TOSS-UP TOSS-UP 5) LIFE SCIENCE Multiple Choice Which of the following is the BEST example of a heterozygous condition: W) non-identical twins X) the matching alleles for a certain physical characteristic are different Y) one of a pair of chromosomes is lost Z) two zygotes are fused together
ANSWER: X) THE MATCHING ALLELES FOR A CERTAIN PHYSICAL CHARACTERISTIC
TOSS-UP 8) GENERAL SCIENCE Multiple Choice Which of the following is a type of burn in which the outer layer of keratin in the skin and the dermis are damaged and is referred to as a full-thickness burn: W) 1st degree X) 2nd degree Y) 3rd degree Z) 4th degree
ANSWER: Y) 3rd DEGREE
BONUS 16) PHYSICAL SCIENCE Multiple Choice Which of the following is NOT true: W) sound waves can be considered longitudinal waves X) light slows down when it enters glass from dry air Y) as a light wave's frequency increases so must its amplitude Z) light can be produced with one frequency
ANSWER: Y) AS A LIGHT WAVE'S FREQUENCY INCREASES SO MUST ITS AMPLITUDE 2007 Middle School Regional Science Bowl - Round 12 Page 8
BONUS 20) LIFE SCIENCE Multiple Choice Which of the following is the MOST readily available energy store during normal human cellular conditions: W) fat X) proteins Y) ATP Z) glucose
ANSWER: Y) ATP 2007 Middle School Regional Science Bowl - Round 12 Page 10
TOSS-UP 12) EARTH SCIENCE Multiple Choice Which of the following is NOT true about glaciations: W) about 15,000 years ago, most of Wisconsin was buried under thick glacial ice X) throughout history, times such as now when only minor ice sheets existed coincided with high sea levels Y) because of its high altitude, Mt. Everest contains a vast continental glacier Z) Australia does not currently contain any glaciers
ANSWER: Y) BECAUSE OF ITS HIGH ALTITUDE, MT. EVEREST CONTAINS A VAST
TOSS-UP 1) PHYSICAL SCIENCE Multiple Choice Which of the following statements is TRUE: W) for a heavy element to be stable the number of protons typically equals the number of neutrons X) the faster a boiling uncovered pot of water boils the hotter the water becomes Y) cellulose is an example of a natural polymer Z) the speed of light is always the same
ANSWER: Y) CELLULOSE IS AN EXAMPLE OF A NATURAL POLYMER
BONUS 14) GENERAL SCIENCE Multiple Choice Which of the following is NOT true about Lyme disease: W) only a small percentage of tick bites in the U.S. result in Lyme disease X) in early stages, people experience flu-like symptoms Y) Lyme disease is treated with anti-viral drugs Z) the ticks that carry the disease are about the size of a sesame seed
ANSWER: Y) LYME DISEASE IS TREATED WITH ANTI-VIRAL DRUGS 2007 Middle School Regional Science Bowl - Round 12 Page 7
BONUS 1) EARTH SCIENCE Multiple Choice After the Sumatran earthquake, a seismograph stationed on the opposite side of the epicenter half-way around the Earth would have detected which of the following: W) nothing because seismic waves cannot pass through the Earth X) both P-waves and S-waves Y) only P-waves Z) only S-waves
ANSWER: Y) ONLY P-WAVES
TOSS-UP 6) EARTH SCIENCE Multiple Choice Which of the following is TRUE: W) pyroclastic flows dominate Hawaiian volcanoes X) granitic magma contains less silica than basaltic magma Y) peridotite is rock found within the Earth's mantle and some meteorites Z) plutons are large masses of basalt
ANSWER: Y) PERIDOTITE IS ROCK FOUND WITHIN THE EARTH'S MANTLE AND
BONUS 20) PHYSICAL SCIENCE Multiple Choice During normal chemical reactions, although the combinations of atoms that form molecules can change, the total number of atoms must remain the same. This is called: W) the law of interchange X) the atomic principle Y) the law of conservation of matter Z) Dalton's law
ANSWER: Y) THE LAW OF CONSERVATION OF MATTER 2007 Middle School Regional Science Bowl - Round 13 Page 10
TOSS-UP TOSS-UP 11) PHYSICAL SCIENCE Multiple Choice Which of the following is the BEST description of the arrangement of the magnetic domains of an unmagnetized iron bar: W) all are aligned at 180º to each other X) all are aligned at 90º to each other Y) they are randomly arranged Z) there are no magnetic domains in this case
ANSWER: Y) THEY ARE RANDOMLY ARRANGED
TOSS-UP 16) EARTH SCIENCE Multiple Choice Which of the following BEST explains why there is typically less temperature variation along the coasts of continents versus inland climates at the same latitude: W) land surfaces of the planet can store more heat than the oceans X) the friction between waves and the shore add heats to the area Y) water can absorb and release large amounts of heat with very little change in temperature Z) surface ocean currents along shorelines typically carry warm water
ANSWER: Y) WATER CAN ABSORB AND RELEASE LARGE AMOUNTS OF HEAT WITH
TOSS-UP TOSS-UP 17) MATH Multiple Choice Which of the following is equivalent to the radical expression, (1818 ) Read as: square root of open parenthesis 18 to the 18th power closed parenthesis W) 33 X) 99 Y) 183 Z) 189
ANSWER: Z) 189
BONUS 4) GENERAL SCIENCE Multiple Choice Which of the following practices is one of the MAIN ways of preventing Brucellosis in humans: W) avoid tick bites X) include vitamin C in your diet Y) include niacin in your diet Z) consume only pasteurized dairy products
ANSWER: Z) CONSUME ONLY PASTEURIZED DAIRY PRODUCTS 2007 Middle School Regional Science Bowl - Round 12 Page 2
BONUS 13) GENERAL SCIENCE Multiple Choice It is believed that the heavy elements in Earth's crust primarily originated from: W) comets X) asteroids Y) meteorites Z) exploding stars called supernovae
ANSWER: Z) EXPLODING STARS CALLED SUPERNOVAE
BONUS 12) EARTH SCIENCE Multiple Choice Which of the following is the Epoch name given to the last approximately 10,000 years of Earth's history: W) Quaternary X) Eocene Y) Miocene Z) Holocene
ANSWER: Z) HOLOCENE 2007 Middle School Regional Science Bowl - Round 12 Page 6
TOSS-UP 14) GENERAL SCIENCE Multiple Choice If you notice a red-ringed rash similar to the shape of a bull's-eye, which of the following diseases would you expect you have: W) malaria X) poison ivy Y) sickle cell anemia Z) Lyme disease
ANSWER: Z) LYME DISEASE
TOSS-UP TOSS-UP 15) LIFE SCIENCE Multiple Choice Which of the following is the name for the blood cell in humans that plays the most central role in regulating the immune system: W) macrophage X) mast cell Y) erythrocyte Z) lymphocyte
ANSWER: Z) LYMPHOCYTE
TOSS-UP TOSS-UP 15) PHYSICAL SCIENCE Multiple Choice Which of the following is MOST commonly used to separate substances based on solubility differences: W) centrifugation X) autoclaving Y) paper filtration Z) paper chromatography
ANSWER: Z) PAPER CHROMATOGRAPHY
BONUS 17) EARTH SCIENCE Multiple Choice Which of the following BEST describes or exemplifies an aquifer: W) superheated water bursting through surface cracks in the Earth X) a lake, pond or stream Y) the side of a mountain facing the prevailing winds Z) porous subsurface rock saturated with water
ANSWER: Z) POROUS SUBSURFACE ROCK SATURATED WITH WATER
TOSS-UP 20) PHYSICAL SCIENCE Multiple Choice Raising a bucket of chicken fat from the floor to 3 meters high off the floor would increase the bucket's: W) kinetic energy X) chemical energy Y) thermal energy Z) potential energy
ANSWER: Z) POTENTIAL ENERGY
TOSS-UP 1) EARTH SCIENCE Multiple Choice A research project called Cosmic plans to use GPS satellites for weather forecasting to give data on temperature, pressure and water vapor in the atmosphere. Today, these data are typically gathered by which of the following: W) Doppler radar X) sonar Y) laser interferometry Z) radiosonde (read as: RAY-de-oh-sond) balloons
ANSWER: Z) RADIOSONDE BALLOONS
TOSS-UP TOSS-UP 19) GENERAL SCIENCE Multiple Choice Which of the following is an anti-oxidant vitamin typically found in relatively high amounts in vegetable oils, nuts and dark green leafy vegetables: W) vitamin K X) vitamin C Y) vitamin D Z) vitamin E
ANSWER: Z) VITAMIN E
BONUS 8) MATH Short Answer Giving your answer in slope-intercept form, what is the equation of the line passing through the point (2, 1) that is parallel to the line with the equation 3y + 12x = 6?
ANSWER: y = -4x + 6 2007 Middle School Regional Science Bowl - Round 12 Page 4
BONUS 12) MATH Short Answer Giving your answer in the simplest form, what is the slope-intercept equation of the line passing through the points (3, 8) and (2, 3)?
ANSWER: y = 5x - 7 2007 Middle School Regional Science Bowl - Round 13 Page 6
TOSS-UP 18) MATH Short Answer Find the value of the following logarithmic expression: log25 5
ANSWER: ½ (ACCEPT: 0.5)