MS Sample Set 14, Round 13 from NSB
A tornado most often develops from which of the following types of clouds seen at the base of a thunderstorm? W) Shelf cloud X) Mammatus cloud Y) Anvil cloud Z) Wall cloud
W: W) Shelf cloud
X: X) Mammatus cloud
Y: Y) Anvil cloud
Z: Z) Wall cloud
Answer: Z) Z) Wall cloud
Rank the following three types of detrital sedimentary rock in terms of increasing grain size: 1) Sandstone; 2) Siltstone; 3) Breccia.
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Urea and uric acid are both waste products that are intended to remove what element from the body?
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Which of the following best explains why there are no major populations of horse-donkey hybrids in the wild? W) The geographic distributions of horses and donkeys do not overlap X) Horses and donkeys have different mating rituals Y) The hybrids are sterile Z) Horse and donkey gametes cannot fuse
W: W) The geographic distributions of horses and donkeys do not overlap
X: X) Horses and donkeys have different mating rituals
Y: Y) The hybrids are sterile
Z: Z) Horse and donkey gametes cannot fuse
Answer: Y) Y) The hybrids are sterile
Researchers at the National Renewable Energy Lab have analyzed the stability of hundreds of new nitride compounds. What is the formal charge of the nitride ion?
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Argonne National Lab scientists are using machine learning to predict the structures of molecules that can behave as carbon-based wires. Given that metal wires transport electrons via d-orbitals, what orbitals are these organic wires expected to use to transport electrons? W) s X) p Y) d Z) f
W: W) s
X: X) p
Y: Y) d
Z: Z) f
Answer: X) X) p
Each day, high tide occurs approximately one hour later than it did the day before. This is due to the fact that what body reaches its upper transit 53 minutes later each day?
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Which of the following spectral classes of stars will emit the largest percentage of its light in the UV range of the electromagnetic spectrum? W) M X) G Y) F Z) O
W: W) M
X: X) G
Y: Y) F
Z: Z) O
Answer: Z) Z) O
If A and B are mutually exclusive events, and the probability of A is 0.3 and the probability of B is 0.2, which of the following statements is NOT true? W) The probability of A and B is 0.06 X) The probability of the complement of A is 0.7 Y) The probability of A or B is 0.5 Z) The probability of B and the complement of A is 0.2
W: W) The probability of A and B is 0.06
X: X) The probability of the complement of A is 0.7
Y: Y) The probability of A or B is 0.5
Z: Z) The probability of B and the complement of A is 0.2
Answer: W) W) The probability of A and B is 0.06
What is the lateral surface area of a right circular cone with radius 5 and height 6?
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A wave travels such that it has a frequency of 20 hertz and a wavelength of 15 meters. In meters per second, what is its speed?
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A 17-meter organ pipe is open at only one end. In hertz, what is the frequency of the fundamental mode?
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Scientists at Pacific Northwest National Lab are studying the processes by which iron rust forms. In rust, what is the formal oxidation state of the iron atoms?
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Scientists at Jefferson Lab are organizing their data into matrices to perform machine learning techniques on them. What are the values, from left to right, of the first row of a 3 by 3 identity matrix?
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When bees pollinate a flower for nectar, both of the species benefit from this interaction. What is the specific term for this type of symbiosis?
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While the Eutherian egg implants in the uterus, it is typically fertilized in what reproductive structure?
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A photon with extremely high energy can result in the pair production of an electron and what other particle?
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Identify all of the following three substances that can form hydrogen bonds: 1) Ammonia; 2) Argon; 3) Hydrogen bromide.
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Solve the following equation for x: $|x - 5| = 8$.
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Given the prime factorizations of the following two numbers, what is their greatest common divisor? 25 · 3 · 5² · 11 and 2⁴ · 3² · 5 · 7²
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Which of the following statements about the Earth’s movement around the Sun and about its axis is true? W) It rotates around the Sun, and revolves about its axis X) It revolves around the Sun, and rotates about its axis Y) It revolves around the Sun and its axis Z) It rotates about the Sun and its axis
W: W) It rotates around the Sun, and revolves about its axis
X: X) It revolves around the Sun, and rotates about its axis
Y: Y) It revolves around the Sun and its axis
Z: Z) It rotates about the Sun and its axis
Answer: X) X) It revolves around the Sun, and rotates about its axis
Isotopes of which of the following elements would be useful for dating a carbonaceous chondrite that is about as old as the Earth? W) Lead X) Hydrogen Y) Carbon Z) Tungsten
W: W) Lead
X: X) Hydrogen
Y: Y) Carbon
Z: Z) Tungsten
Answer: W) W) Lead
What is the term for the transition from the solid phase to the liquid phase?
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What weight, in newtons, must an object with a volume of 1000 cubic centimeters have in order to neither sink nor rise when submerged in water?
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Scientists at SLAC National Accelerator Lab determined the coat color of a mouse fossil via x-ray fluorescence imaging. The organic pigments in the fossil have long since degraded, so they inferred the distribution of pigments by observing the distribution of what entities that are chelated by the pigments? W) Collagens X) Metal ions Y) ATP Z) Mitochondria
W: W) Collagens
X: X) Metal ions
Y: Y) ATP
Z: Z) Mitochondria
Answer: X) X) Metal ions
Scientists at Argonne National Lab are studying the structure of the most magnetic mineral on Earth, magnetite. Magnetite most directly owes its magnetism to what element in its structure?
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A worker can assemble 5 computers in 7 hours. If he continues at that rate, which of the following is closest to the number of computers he could assemble in 100 hours? W) 70 X) 75 Y) 80 Z) 85
W: W) 70
X: X) 75
Y: Y) 80
Z: Z) 85
Answer: W) W) 70
A certain medication has a 60% success rate of curing people who have a specific illness. If three people with the illness are selected at random and take the medicine, what is the probability that exactly one of the three people will be cured?
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Astronomical objects that are less than 0.08 solar masses cannot get hot enough to fuse hydrogen into helium. What is the name of this class of object? W) Brown dwarf X) Red dwarf Y) White dwarf Z) Black dwarf
W: W) Brown dwarf
X: X) Red dwarf
Y: Y) White dwarf
Z: Z) Black dwarf
Answer: W) W) Brown dwarf
Which of the following is closest to the ratio of Jupiter’s surface magnetic field strength to that of the Earth? W) 2,000,000 X) 200,000 Y) 2,000 Z) 20
W: W) 2,000,000
X: X) 200,000
Y: Y) 2,000
Z: Z) 20
Answer: Z) Z) 20
In a population of giraffes, giraffes with longer necks are more able to reach food sources, while incurring no negative fitness effects. Which of the following types of selection will take place in this population? W) Directional X) Stabilizing Y) Disruptive Z) Neutral
W: W) Directional
X: X) Stabilizing
Y: Y) Disruptive
Z: Z) Neutral
Answer: W) W) Directional
Identify all of the following three types of muscles that are controlled by the autonomic nervous system: 1) Skeletal; 2) Cardiac; 3) Smooth.
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If you subtract an atom’s atomic number from its mass number, you are left with its number of what subatomic particle?
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Consider the reaction of Fe₃O₄ with carbon monoxide to yield solid iron and carbon dioxide. For each mole of Fe₃O₄ that is consumed, how many moles of carbon dioxide are formed?
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If a number is increased by 40%, by what percent is its square increased?
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For some integer m, a school has 7m − 11 students in its science club, and 3m + 38 students in its band. If there are more students in the science club than in the band, what is the smallest possible number of students in the science club?
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Which of the following best describes the conditions under which an artesian aquifer is possible? W) The aquifer is on top of another less permeable aquifer X) The aquifer is dug deep into the ground Y) The groundwater surrounding the aquifer is unconfined Z) The groundwater in the aquifer is under pressure
W: W) The aquifer is on top of another less permeable aquifer
X: X) The aquifer is dug deep into the ground
Y: Y) The groundwater surrounding the aquifer is unconfined
Z: Z) The groundwater in the aquifer is under pressure
Answer: Z) Z) The groundwater in the aquifer is under pressure
What is the oxidation state of silicon in olivine?
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Your knees are an example of which of the following types of joint? W) Saddle X) Ball-and-socket Y) Pivot Z) Hinge
W: W) Saddle
X: X) Ball-and-socket
Y: Y) Pivot
Z: Z) Hinge
Answer: Z) Z) Hinge
Corals produce a hard exoskeleton that eventually forms coral reefs. What is the chemical formula of the typical constituent of this material?
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How many single and double bonds, respectively, are found in one molecule of rhombic sulfur?
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A 500-newton ballerina stands on her tip toes, which distributes her weight over an area of 40 square centimeters. In pascals, what is the pressure she is exerting on the ground?
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In triangle A-B-C, angle A measures 46 degrees and angle B measures 111 degrees. What is the degree measure of one of the exterior angles formed at vertex C?
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What is the sum of the integers between 1 and 70 inclusive?
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In sexual reproduction, the zygote obtains its genetic material from two haploid parent cells. What is the general term for these cells?
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The hydrolysis of ATP to ADP results in the release of what anion?
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