HS Sample Set 12, Round 1 from NSB
What is a tornado called when it moves or develops over water?
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As the Atlantic Ocean began to open around 200 million years ago, which of the following regions was most directly adjacent to the crust that now underlies the eastern margin of the United States? W) The British Isles X) The southwest margin of Scandinavia Y) The northwest margin of Africa Z) The Walvis Ridge
W: W) The British Isles
X: X) The southwest margin of Scandinavia
Y: Y) The northwest margin of Africa
Z: Z) The Walvis Ridge
Answer: Y) Y) The northwest margin of Africa
In which of the following organelles does transcription NOT occur? W) Nucleus X) Peroxisome Y) Chloroplast Z) Mitochondrion
W: W) Nucleus
X: X) Peroxisome
Y: Y) Chloroplast
Z: Z) Mitochondrion
Answer: X) X) Peroxisome
A commonly-used method of classifying animals is to find a shared ancestral characteristic and use it to group organisms as either within the group or outside the group. Identify all of the following three animals that are inside the group for the hinged jaw characteristic: 1) Lamprey; 2) Turtle; 3) Bass.
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Solve the following equation for x: $$\displaystyle \frac{4}{x - 6} = \frac{5}{x - 1}$$
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Identify all of the following four expressions that are odd functions: 1) $$\sqrt[3]{x}$$; 2) $$\cos(x)$$; 3) $$\tan(x)$$; 4) $$e^x$$.
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Which of the following elements is most electronegative according to the Pauling scale? W) Carbon X) Iron Y) Arsenic Z) Tellurium
W: W) Carbon
X: X) Iron
Y: Y) Arsenic
Z: Z) Tellurium
Answer: W) W) Carbon
Which of the following best explains why a beam of light is scattered when it shines through milk but not through water? W) Milk is a colloid, while water is not X) Milk is denser than water Y) Milk forms weaker hydrogen bonds than water Z) Milk has a higher vapor pressure than water
W: W) Milk is a colloid, while water is not
X: X) Milk is denser than water
Y: Y) Milk forms weaker hydrogen bonds than water
Z: Z) Milk has a higher vapor pressure than water
Answer: W) W) Milk is a colloid, while water is not
Scientists at Lawrence Berkeley National Lab recently used molybdenum disulfide to generate a one-nanometer transistor gate that is resistant to what quantum-mechanical process, where electrons transition from one side of a potential barrier to another?
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A team of Berkeley Lab researchers recently published a study using a thin monolayer of an sp²-hybridized material to image electric fields. What is the common name of the material they used?
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Given a graph with velocity as the y-axis and time as the x-axis, what physical quantity does the slope of the graph represent?
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By what factor is the frequency of a spring-mass oscillator multiplied if the mass of the block doubles?
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Which of the following human proteins, when fully assembled, contains exactly four subunits? W) Actin X) Myoglobin Y) Thrombin Z) Hemoglobin
W: W) Actin
X: X) Myoglobin
Y: Y) Thrombin
Z: Z) Hemoglobin
Answer: Z) Z) Hemoglobin
Identify all of the following three molecules that should be able to pass through a nuclear pore in a eukaryotic cell: 1) mRNA; 2) Glucose-1-phosphate; 3) Histone.
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Which of the Milankovitch cycles account for climate changes over a 41,000-year period? W) Eccentricity X) Obliquity Y) Precession of the equinox Z) Apsidal precession
W: W) Eccentricity
X: X) Obliquity
Y: Y) Precession of the equinox
Z: Z) Apsidal precession
Answer: X) X) Obliquity
Flocculent and grand design are words used to describe what specific type of galaxy?
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William Robert Grove proposed the idea that if water can be broken down to hydrogen and oxygen with electricity, the opposite reaction should produce electricity. What device did he then go on to invent based on this idea?
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The Planck and BICEP2 experiments, partially supported by the Department of Energy, were constructed to attempt to confirm what event in the early history of the universe?
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Find the zeroes of the function $$f(x) = \frac{6}{x^2 - 6x + 5}\,$$.
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What is the derivative of the function $$x^2 e^x$$ at $$x = 1$$?
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What quantum number is responsible for the energy of the orbital and corresponds to the shell of the electrons?
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Identify all of the following three statements that are true of concentration cells: 1) They have standard cell potentials equal to zero; 2) The spontaneous reaction is always from the less-concentrated solution to the more-concentrated solution; 3) Concentration cells can always proceed spontaneously.
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A 2-kilogram ball is thrown directly down from the top of a tall building. If a 6-kilogram ball is thrown directly upwards at the same speed from the top of the same building, what is the ratio of the total energy of the 6-kilogram ball to that of the 2-kilogram ball?
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The nucleus of what element is produced in a deuterium-tritium fusion reaction?
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What non-foliated metamorphic rock forms from metamorphism of limestone?
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In which of the following locations in the Atlantic Ocean would you find a deep water formation site? W) Off the southern coast of Greenland X) In the Caribbean Sea Y) Off the coast of New York Z) Along the coast of Argentina
W: W) Off the southern coast of Greenland
X: X) In the Caribbean Sea
Y: Y) Off the coast of New York
Z: Z) Along the coast of Argentina
Answer: W) W) Off the southern coast of Greenland
As $$x \to 1$$, $$\lim f(x) = 6$$, $$\lim g(x) = 8$$, and $$\lim h(x) = 10$$. What is $$\lim_{x \to 1}\bigl(f(x) + g(x)\,h(x)\bigr)$$?
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What is the slope-intercept form of the equation of the oblique asymptote of the function $$f(x) = \frac{x^2 + 7x}{x + 2}$$?
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What particle collider, located at Brookhaven National Lab, was the first to demonstrate the creation of quark-gluon plasma?
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In car batteries, elemental lead is converted to what compound during discharge?
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Identify all of the following three molecules that catalyze the chemical digestion of food: 1) Amylase; 2) Bile acids; 3) Insulin.
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Identify all of the following three organisms that are deuterostomes: 1) Jellyfish; 2) Humans; 3) Sea cucumbers.
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What is the equivalent capacitance, in microfarads, of a series combination of a 3-microfarad capacitor and a 6-microfarad capacitor?
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Kate usually drives from San Francisco to Lake Tahoe at a speed of 100 kilometers per hour, and the trip usually takes two and a half hours. On her return trip, however, traffic slows her down to 75 kilometers per hour. How much longer, in minutes, does her trip take?
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Rank the following three gases in terms of increasing rate of effusion: 1) Chlorine; 2) Helium; 3) Nitrogen.
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Rank the following three elements in increasing order of effective nuclear charge felt by their valence electrons: 1) Oxygen; 2) Boron; 3) Beryllium.
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Triton is a moon of what gas giant?
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The approximate surface temperature of our Sun is 5800 kelvins, while the approximate surface temperature of the blue giant star Rigel is 11,600 kelvins. According to these data and the Stefan-Boltzmann law, how many times as much radiative power per unit of surface area does Rigel generate as the Sun?
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Simplify $$x^{0.8} \cdot x^{1.2}$$.
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What is the least common multiple of the first 5 positive composite numbers?
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In animal cells, what type of cellular junction is formed by connexons and enables molecules to pass from cell to cell?
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A pea farmer starts with two parent plants, one dominant plant being true-breeding for yellow and round seeds, while the recessive plant is true-breeding for green and wrinkled seeds. If the F₁ generation is self-pollinated, what fraction of the F₂ generation will have yellow and round seeds?
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What is the ratio of the intensity of a 30-decibel sound to that of a 20-decibel sound?
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A 4.5-centimeter tall object is placed 15 centimeters from a double convex lens with a 9-centimeter focal length. In centimeters, what is the image distance?
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A student places a small amount of n-octane into a constant-volume reaction vessel and combusts the sample in excess oxygen. The heat given off in this reaction is a direct measure of the change in what state function between products and reactants?
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Identify all of the following three molecules that have an empirical formula consisting of only one type of atom: 1) Charcoal; 2) Diamond; 3) Hexane.
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