High School Science Bowl Practice Questions
High school level Science Bowl practice questions covering multiple choice and short answer questions in Biology, Chemistry, Physics, and General Science. Topics include biological terms, chemical reactions, oxidation numbers, electromotive force, and data interpretation on line graphs.
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Practice Science Bowl Questions (HS)
BIOLOGY Multiple Choice Which of the following molecules do methanogens (read as: meth-AN-oh-gens) most often use as their final electron acceptor in their generation of energy: W) hydrogen X) carbon dioxide Y) methane Z) oxygen
BIOLOGY Short Answer What is the general biological term for organisms that synthesize organic molecules from inorganic molecules using light as an energy source? Answer: Photoautotrophs (Accept: Phototrophs)
CHEMISTRY Multiple Choice The conversion of solid CaSO4 into solid CaO and SO2 gas is an example of what class of chemical reaction: W) decomposition X) hydrolysis Y) combustion Z) single replacement
CHEMISTRY Short Answer What is the oxidation number of chromium in the chromate ion, or CrO42 ? Answer: 6 (accept +6; Do not accept -6)
PHYSICS Multiple Choice Which of the following would not supply electromotive force: W) transformers X) generators Y) conductors Z) batteries
PHYSICS Short Answer The nucleus of what element is the same as an alpha particle? Answer: Helium
GENERAL SCIENCE Multiple Choice What is the MOST accurate term for predicting values of data that are located between known data points on a line graph: W) extrapolation X) extension Y) interpolation Z) cheating
GENERAL SCIENCE Short Answer Convert 0.001 grams per cubic millimeter into kilograms per cubic meter: Answer: 1,000 (Accept 1 x 103)
EARTH SCIENCE Multiple Choice Which of the following is commonly accepted as the engine that most directly drives plate tectonic motion: W) mantle convection X) volcanic off-gassing Y) a molten iron core Z) gravitational pull of the Moon and Sun
EARTH SCIENCE Multiple Choice Although scientists are unable to obtain samples by drilling, they believe the predominant mineral in the mantle is: W) iron pyrite X) potassium feldspar Y) quartz Z) olivine
BIOLOGY Multiple Choice Of which of the following is endosperm in wheat primarily composed: W) protein X) nucleic acid Y) carbohydrate Z) lipid
BIOLOGY Multiple Choice From which of the following does the seed coat of angiosperm seeds typically develop: W) integuments X) polar nuclei Y) nucleus Z) cotyledons
CHEMISTRY Multiple Choice Ca(OH)2, NaOH, and Ba(OH)2, are all: (READ: calcium hydroxide, sodium hydroxide, and barium hydroxide ) W) weak bases X) completely ionized in water Y) alkali halides Z) standard buffers
CHEMISTRY Multiple Choice Which of the following compounds is most SOLUBLE in water at 10 C: W) KNO3 (READ: potassium nitrate) X) CaSO4 (READ: calcium sulfate) Y) BaSO4 (READ: barium sulfate) Z) AgBr (READ: silver bromide)
PHYSICS Multiple Choice Which of the following 4 choices MUST be true for 2 objects in thermal equilibrium: W) they both must radiate no energy in any direction X) they must be at the same temperature Y) they both must have the same thermal expansion coefficients Z) they must have the same internal energy
PHYSICS Multiple Choice Which of the following is NOT true of the Hall effect: W) it can be used to measure the strength of a magnetic field X) it is a consequence of a current carrying wire in a magnetic field Y) it was one of the first direct indications that negative charges are what move in conductors Z) it cannot distinguish between positive and negative particles
MATH Multiple Choice Which of the following is NOT true of matrices: W) a square matrix that has an inverse is called invertible X) a matrix does not have to have an inverse Y) a matrix that does not have an inverse is called non-singular Z) a matrix must be square in order to have an inverse
MATH Short Answer Giving your answer as an ordered pair, find the solution of the system of the following 2 equations: x = (2/3)y 2 and x = y 3: Answer: (0, 3)
ASTRONOMY ShortAnswer For someone standing at 43 north latitude, how many degrees above the horizon will the north celestial pole be? Answer: 43
ASTRONOMY Short Answer In what phase does the planet Venus appear during superior conjunction? Answer: Full
BIOLOGY Multiple Choice In which of the following wavelengths does DNA absorb the best: W) 3,900 angstroms X) 260 nanometers Y) 340 nanometers Z) 540 nanometers
BIOLOGY Multiple Choice Which of the following is closest to the diameter of a plasmodesmata (read as: PLAS-mo-dez-MAH-tah): W) 2 angstroms X) 60 nanometers Y) 80 microns Z) 180 microns
CHEMISTRY Multiple Choice A lead chromate solution is typically what color W) blue X) red Y) yellow Z) green
CHEMISTRY Multiple Choice Which of the following molecules exhibits a dipole moment: W) CH4 (READ: methane) X) H2S (READ: hydrogen sulfide) Y) CO2 (READ: carbon dioxide) Z) SO3 (READ: sulfur trioxide)
PHYSICS Multiple Choice Which of the following BEST describes Fermat s principle: W) light disperses in a specific medium depending on the medium s refractive index X) light follows the path of least time between two points Y) the angle of incidence can be greater than the angle of reflection Z) light always travels in the same medium at the same speed
PHYSICS Short Answer What is the ideal mechanical advantage of a wheel and axle, if the diameter of the wheel is 500 centimeters and the radius of the axle is 2.5 centimeters? Answer: 100
MATH Multiple Choice What is the product of the following 2 values: (1) the greatest common divisor of 7 and 14; and (2) the least common multiple of 7 and 14: W) 21 X) 49 Y) 98 Z) 196
MATH Short Answer Multiply the following complex numbers, giving your answer in standard a + bi form: (6 + 3i)(4 + i) ANSWER: 21 + 18i
EARTH SCIENCE Short Answer In what layer of Earth s atmosphere do most meteors experience the most heating? Answer: Mesosphere
EARTH SCIENCE Short Answer Name all of the following 4 layers of the atmosphere where temperature typically increases as altitude increases: troposphere; stratosphere; mesosphere; thermosphere Answer: Stratosphere; Thermosphere
PHYSICS Short Answer What physical property of neutrinos, which was confirmed in the past decade, contradicts earlier assumptions that neutrinos travel at the speed of light? Answer: Mass (Accept: Neutrinos have mass)
PHYSICS Short Answer What is the name of the universal constant that relates atomic spectra of elements to that of hydrogen? Answer: Rydberg Constant (Accept: Rydberg)
CHEMISTRY Multiple Choice When dissociated in water, which of the following acids has its dissociation equilibrium shifted farthest to the right: W) HClO X) HClO2 Y) HClO3 Z) HClO4
CHEMISTRY Short Answer Arrange the following 4 bonds in order of decreasing polarity: Br Br; K Br; P Cl; Li F Answer: Li F; K Br; P Cl; Br Br
ASTRONOMY Short Answer Order the following 3 stages from the EARLIEST to the LATEST in the evolution of a G-type star of 2 solar masses: red giant; T-tauri; white dwarf Answer: T-Tauri; Red Giant; White Dwarf
ASTRONOMY Short Answer What 3 elements are most prominent in the carbon fusion cycle? Answer: Carbon; Nitrogen; Oxygen
MATH Short Answer If a point has polar coordinates (3, ), what are the rectangular coordinates? Answer: (-3, 0)
MATH Multiple Choice At x = -(1/2), the graph of y = x3 is: W) increasing and concave up X) increasing and concave down Y) decreasing and concave up Z) decreasing and concave down
BIOLOGY Short Answer Intestinal absorption of what vitamin is most directly dependent on intrinsic factor? Answer: B12
BIOLOGY Multiple Choice Which of the following is the RNA complementary sequence of the following sequence: 5 CCGCGA 3 (read as: 5-prime, CCGCGS, 3-prime) W) 5 UCGCGG 3 (read as: 5-prime, UCGCGG, 3-prime) X) 5 GGCGCU 3 Y) 5 GGCGCT 3 Z) 5 TCGCGG 3
CHEMISTRY Short Answer Name the 2 different bond angles present in a molecule with octahedral geometry, such as in SF6: Answer: 90; 180
CHEMISTRY Short Answer What is the most common name for the conformation that the ring structure of cyclohexane adopts to reach a strain-free value? Answer: Chair
GENERAL SCIENCE Multiple Choice Which of the following is the source of alpha radiation most often used in household ionization smoke detectors: W) americium-241 X) uranium-238 Y) radium-226 Z) iron-59
GENERAL SCIENCE Short Answer Pitchblende is one of the main ores of what element? Answer: URANIUM
EARTH SCIENCE Multiple Choice Which of the following are thought to form the mantle of the Earth: W) ultramafic rocks X) felsic rocks Y) silicic rocks Z) mafic rocks
EARTH SCIENCE Multiple Choice Which of the following is the single most important factor that generally sets a northern limit to tree growth, such as in the areas of transition between taiga and tundra in Alaska: W) high-winter winds X) lack of summer warmth Y) lack of spring moisture Z) lack of soil nutrients
BIOLOGY Multiple Choice With which of the following does human interstitial fluid differ in concentration the most when compared with plasma: W) sodium ions X) potassium ions Y) magnesium ions Z) proteins
BIOLOGY Short Answer What human organ produces the majority of immune complement proteins? Answer: Liver
PHYSICS Multiple Choice Which of the following BEST describes the most common functions for which most transistors are used: W) to switch on and off or amplify electronic signals X) to allow electric current to pass in only one direction while increasing or decreasing the voltage Y) to store electrical energy Z) to regulate the frequency of electrical sine waves
