MS Sample Set 14, Round 15 from NSB
When you lift up a tennis ball from the ground and hold it high into the air, it is said to have gained what type of energy?
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A 1-ohm resistor and a 2-ohm resistor are connected in parallel. This circuit is connected in series to a 9-volt battery. In ohms, what is the total resistance of the circuit?
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Seismic P-waves propagate in what type of motion? W) Rolling X) Shearing Y) Torsion Z) Compression
W: W) Rolling
X: X) Shearing
Y: Y) Torsion
Z: Z) Compression
Answer: Z) Z) Compression
Rank the following four carbon reservoirs in order of increasing amount of carbon stored: 1) Terrestrial vegetation and soils 2) Earth’s lithosphere and mantle 3) Earth’s atmosphere 4) The deep ocean
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In the human embryo, the fingers initially develop with webbing in between them. What process occurs in these cells as the webbing disappears?
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Which of the following animals is most closely related in phylogeny to a slug? W) Octopus X) Jellyfish Y) Earthworm Z) Beetle
W: W) Octopus
X: X) Jellyfish
Y: Y) Earthworm
Z: Z) Beetle
Answer: W) W) Octopus
What is 51 times 61?
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How many diagonals does a convex 26-sided polygon have?
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Scientists at Brookhaven National Lab are studying how increasing atmospheric carbon dioxide and increasing Arctic temperatures may result in greater Arctic carbon dioxide uptake as plants begin to grow there. Which of these most closely describes this example? W) Feedforward regulation X) Cyclic regulation Y) Positive feedback Z) Negative feedback
W: W) Feedforward regulation
X: X) Cyclic regulation
Y: Y) Positive feedback
Z: Z) Negative feedback
Answer: Z) Z) Negative feedback
Lawrence Berkeley National Lab is utilizing deep learning techniques to analyze health records. Deep learning is a type of which of the following? W) Machine learning technique X) Study technique Y) Statistical significance test Z) An algorithm for p-hacking
W: W) Machine learning technique
X: X) Study technique
Y: Y) Statistical significance test
Z: Z) An algorithm for p-hacking
Answer: W) W) Machine learning technique
In stellar fusion, two helium nuclei can react to form beryllium. Beryllium is very unstable and will decay quickly unless it reacts with a third helium atom to form what isotope?
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Which of the following types of nebulas is the Sun most likely to form in the course of its evolution? W) Planetary nebula X) Supernova remnant Y) Dark nebula Z) Reflection nebula
W: W) Planetary nebula
X: X) Supernova remnant
Y: Y) Dark nebula
Z: Z) Reflection nebula
Answer: W) W) Planetary nebula
In mammals, the Barr body is an inactivated form of which chromosome?
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Identify all of the following three diseases that are caused by fungi: 1) Yeast infection 2) Tuberculosis 3) Ringworm
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P-type and N-type are varieties of what types of materials that make up electrical circuits?
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Identify all of the following three changes that would increase the density of a sample, given that all else is held equal: 1) Increasing its mass 2) Increasing its volume 3) Decreasing its volume
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Scientists at the National Renewable Energy Laboratory are using computer models to predict the energy levels of molecules. In these models, how many electrons can be contained in each nondegenerate energy level?
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Scientists at Idaho National Lab are developing fission reactors that use molten chloride salts as a coolant. This coolant is typically enriched in chlorine-37 because chlorine-35 can absorb a neutron and then undergo beta minus decay into what element?
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Which of the following is not a form of physical weathering? W) Frost wedging X) Thermal expansion Y) Root wedging Z) Oxidation
W: W) Frost wedging
X: X) Thermal expansion
Y: Y) Root wedging
Z: Z) Oxidation
Answer: Z) Z) Oxidation
Which of the following ages, in millions of years old, is closest to the age of the oldest oceanic crust? W) 18 X) 180 Y) 1,800 Z) 18,000
W: W) 18
X: X) 180
Y: Y) 1,800
Z: Z) 18,000
Answer: X) X) 180
What is the largest prime number that divides 40 factorial?
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Eight marbles marked one through eight are placed into a bag, and you draw three of them simultaneously at random. What is the probability that the three marbles you draw are marked 3, 4, and 5?
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Sharks and rays are considered Chondrichthyans due to their bones being primarily composed of what substance?
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Identify all of the following three statements that are true regarding mitosis: 1) Spindle microtubules undergo crosslinking during cytokinesis 2) Sister chromatids are held together at the centromere 3) Spindle fibers attach to the kinetochore complexes on chromatids
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Researchers at Fermi National Accelerator Facility are constructing DUNE, the Deep Underground Neutrino Experiment. In this experiment, neutrinos will travel 800 miles before being detected. How will the neutrinos travel the 800 miles? W) Neutrinos will travel through underground electrical wiring X) Neutrinos will be routed over land by a series of superconducting magnets Y) Neutrinos will be fired through an 800 mile linear accelerator Z) Neutrinos will be fired underground and pass through Earth
W: W) Neutrinos will travel through underground electrical wiring
X: X) Neutrinos will be routed over land by a series of superconducting magnets
Y: Y) Neutrinos will be fired through an 800 mile linear accelerator
Z: Z) Neutrinos will be fired underground and pass through Earth
Answer: Z) Z) Neutrinos will be fired underground and pass through Earth
Researchers supported by the Department of Energy are developing quantum dots that emit visible light. In order to do this, they are irradiated with what type of light? W) Ultraviolet X) Infrared Y) Microwave Z) Radio
W: W) Ultraviolet
X: X) Infrared
Y: Y) Microwave
Z: Z) Radio
Answer: W) W) Ultraviolet
What is the sum of the roots of the quadratic equation \(x^2 + 2x - 35 = 0\)?
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One Science Bowl team, which can have either four or five players, is to be picked from a class of 8 students. How many different teams could be picked?
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Mark walks 30 meters east and then 40 meters south. In meters, what is the magnitude of his net displacement?
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All movable pulley systems that consist of only a single pulley have a mechanical advantage of what value?
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Which of the following best describes the state of matter in the core of the sun? W) Liquid metallic hydrogen X) Exposed nuclei and free electrons Y) Partially ionized gas Z) Solid helium
W: W) Liquid metallic hydrogen
X: X) Exposed nuclei and free electrons
Y: Y) Partially ionized gas
Z: Z) Solid helium
Answer: X) X) Exposed nuclei and free electrons
Which of the following best describes the history of the formation of large craters on the Moon? W) Formed early in the Moon’s history X) Formed at a near constant rate throughout the Moon’s history Y) Formed late in the Moon’s history Z) Formed during major events occurring throughout the Moon’s history
W: W) Formed early in the Moon’s history
X: X) Formed at a near constant rate throughout the Moon’s history
Y: Y) Formed late in the Moon’s history
Z: Z) Formed during major events occurring throughout the Moon’s history
Answer: W) W) Formed early in the Moon’s history
During what period are the first reptiles thought to have emerged? W) Ordovician X) Jurassic Y) Triassic Z) Carboniferous
W: W) Ordovician
X: X) Jurassic
Y: Y) Triassic
Z: Z) Carboniferous
Answer: Z) Z) Carboniferous
When water accidentally enters your trachea, sensory neurons send information through a reflex arc in the brain to trigger coughing. In what structure in the nervous system are the interneurons of this reflex arc located? W) Pons X) Medulla Y) Cerebrum Z) Spinal cord
W: W) Pons
X: X) Medulla
Y: Y) Cerebrum
Z: Z) Spinal cord
Answer: X) X) Medulla
A triangle has sides of length 10, 8, and 4. Connecting the midpoints of the sides of this triangle forms a smaller triangle. What is the perimeter of the smaller triangle?
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What is the volume of a triangular right prism with each edge of length 8?
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Rank the following three hydrocarbons in order of increasing number of carbon atoms: 1) Ethane 2) Propane 3) Butane
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Andrew places a 5-kilogram block on a pedestal with an area of 0.01 meters squared. In pascals, what is the pressure the block exerts on the pedestal?
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What muscles in the human eye control the shape of the lens?
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Identify all of the following three responses that result from sympathetic stimulation: 1) Heart rate increased 2) Stomach contractions reduced 3) Pupillary dilation
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In square feet, what is the lateral surface area of a circular cylindrical pipe 8 feet long with radius 3 feet?
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Giving your answer in base 7, what is ONE-SIX base 7 times FIVE-FOUR base 7?
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Venus has a very weak magnetic field compared to the Earth. Which of the following best explains why this is puzzling to planetary scientists? W) Venus has a thick atmosphere X) Venus is similar in size to Earth Y) Venus shows evidence of modern volcanism Z) Venus shows evidence of plate tectonics
W: W) Venus has a thick atmosphere
X: X) Venus is similar in size to Earth
Y: Y) Venus shows evidence of modern volcanism
Z: Z) Venus shows evidence of plate tectonics
Answer: X) X) Venus is similar in size to Earth
Identify all of the following three statements that are true about the earliest mammals: 1) They coexisted with dinosaurs for about 100 million years 2) They gathered food mostly during daylight hours 3) They lived only in desert regions
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What is the term for a substance that, upon addition to a reaction, causes the rate to decrease?
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It takes 6 joules of energy to stretch a Hookean spring from its equilibrium position to a displacement of 40 centimeters. How many additional joules of energy will it require to stretch it from 40 centimeters to 80 centimeters away from equilibrium?
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