MS Sample Set 10, Round 13 from NSB
Which of the following describes the lines represented by the equations $5x + 3y = 15$ and $-10x - 6y = 60$? W) They are parallel X) They are skew Y) They intersect at exactly one point Z) They are the same line
W: W) They are parallel
X: X) They are skew
Y: Y) They intersect at exactly one point
Z: Z) They are the same line
Answer: W) W) They are parallel
Nelly bought a mixture of two types of her favorite candies, costing 40 cents and 50 cents per ounce, respectively. The cost of 50 ounces of her mixture was \$21.80. How many ounces of the 50-cent candy were in the mixture?
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Which of the following instruments is best for measuring humidity? W) Hygrometer X) Barometer Y) Anemometer Z) Hydrometer
W: W) Hygrometer
X: X) Barometer
Y: Y) Anemometer
Z: Z) Hydrometer
Answer: W) W) Hygrometer
The diamond-shaped NFPA Symbol on chemical containers includes 4 smaller diamonds, representing 4 hazard areas. Name 2 of them.
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What is the main structural material found in a skate's skeleton?
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The keel is a broad surface for muscle attachment that protrudes from what bone in a bird's body?
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Which of the following electricity generation methods would work best as a peaker plant? W) Coal-fired X) Natural gas-fired Y) Nuclear Z) Geothermal
W: W) Coal-fired
X: X) Natural gas-fired
Y: Y) Nuclear
Z: Z) Geothermal
Answer: X) X) Natural gas-fired
In a standard lithium-ion battery, from what substance is the anode made? W) Carbon X) Lithium cobalt oxide Y) Lithium iron phosphate Z) Copper
W: W) Carbon
X: X) Lithium cobalt oxide
Y: Y) Lithium iron phosphate
Z: Z) Copper
Answer: W) W) Carbon
The rings of Saturn are mostly made of which of the following substances? W) Iron X) Ice Y) Rock Z) Gas
W: W) Iron
X: X) Ice
Y: Y) Rock
Z: Z) Gas
Answer: X) X) Ice
Order the following four reservoirs of Earth's freshwater from the smallest to the largest:
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What is it called when all forces acting on an object are balanced?
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Three resistors of 2, 3, and 4 ohms, respectively, are wired in parallel, and the resulting combination is in series with a 5-ohm resistor. What is the equivalent resistance, in ohms, of the entire circuit?
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Which of the following is a geographical region characterized by hills, plateaus, and mountains? W) Continental shelf X) Altitude Y) Highland Z) Cliff
W: W) Continental shelf
X: X) Altitude
Y: Y) Highland
Z: Z) Cliff
Answer: Y) Y) Highland
What is the term used to describe an experiment in which neither the subjects nor the experimenters know which subjects are in the control and treatment groups?
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Which of the following traits is NOT a characteristic of modern birds? W) Feathers X) A three-chambered heart Y) A beak with no teeth Z) A lightweight but strong skeleton
W: W) Feathers
X: X) A three-chambered heart
Y: Y) A beak with no teeth
Z: Z) A lightweight but strong skeleton
Answer: X) X) A three-chambered heart
Book lungs would most likely be found in what class of animals?
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As you walk, which of the following forces is the most directly responsible for propelling you forward? W) The normal force of the ground on your foot X) The force of your foot pushing on the ground Y) The friction between your foot and the ground Z) The reaction force of the ground on your foot
W: W) The normal force of the ground on your foot
X: X) The force of your foot pushing on the ground
Y: Y) The friction between your foot and the ground
Z: Z) The reaction force of the ground on your foot
Answer: Z) Z) The reaction force of the ground on your foot
A speck of dust sits on the edge of a 12-inch diameter LP record. If the record rotates at 45 rotations per minute, what is the linear speed, in inches per minute, of the speck of dust?
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What is the degree of the product of the three binomials $x + 2$, $x^4 + x^2$, and $x^2 + 3$?
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A bag contains 9 different mini candy bars. How many different sets of 3 of them can be selected?
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Compact fluorescent lightbulbs should be recycled because they contain what harmful element?
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Research at Argonne National Laboratory has been done on nuclear fuel recycling. After a nuclear fuel rod has been removed from a reactor, which of the following is closest to the percentage of the unused uranium that is still present in the rod and could be recycled? W) 25 X) 50 Y) 75 Z) 95
W: W) 25
X: X) 50
Y: Y) 75
Z: Z) 95
Answer: Z) Z) 95
Which of Hubble’s four categories of galaxies does not have a distinct spiral or elliptical shape?
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Which of the following types of plate tectonic boundaries is associated with shallow earthquakes, but not with volcanism? W) Convergent X) Divergent Y) Passive Z) Transform
W: W) Convergent
X: X) Divergent
Y: Y) Passive
Z: Z) Transform
Answer: Z) Z) Transform
Which of the following statements is NOT true about the Rutherford experiment carried out by Hans Geiger and Ernest Marsden at the request of Rutherford? W) Rutherford inferred the gold electrons were responsible for deflecting the alpha particles by small angles X) Rutherford inferred the gold nuclei were responsible for deflecting the alpha particles by large angles Y) The deflected alpha particles were detected as points of light on a fluorescent screen Z) Approximately 1 in 20,000 alpha particles was deflected by 90 degrees or more
W: W) Rutherford inferred the gold electrons were responsible for deflecting the alpha particles by small angles
X: X) Rutherford inferred the gold nuclei were responsible for deflecting the alpha particles by large angles
Y: Y) The deflected alpha particles were detected as points of light on a fluorescent screen
Z: Z) Approximately 1 in 20,000 alpha particles was deflected by 90 degrees or more
Answer: W) W) Rutherford inferred the gold electrons were responsible for deflecting the alpha particles by small angles
An object is placed between the focal point and curvature center of a concave mirror. How does the image compare to the object? W) Upside down and smaller X) Upside down and larger Y) Right side up and smaller Z) Right side up and larger
W: W) Upside down and smaller
X: X) Upside down and larger
Y: Y) Right side up and smaller
Z: Z) Right side up and larger
Answer: X) X) Upside down and larger
Which of the following fuels used for electricity production produces radioactive waste? W) Wind X) Natural gas Y) Geothermal Z) Coal
W: W) Wind
X: X) Natural gas
Y: Y) Geothermal
Z: Z) Coal
Answer: Z) Z) Coal
What U. S. river has the most potential to generate electricity using existing dams?
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Which of the following is TRUE regarding the differences between RNA and DNA? W) RNA is used as a catalyst, while DNA is not X) RNA cannot be replicated, but DNA can Y) RNA is always single-stranded, while DNA is always double-stranded Z) RNA is more stable than DNA
W: W) RNA is used as a catalyst, while DNA is not
X: X) RNA cannot be replicated, but DNA can
Y: Y) RNA is always single-stranded, while DNA is always double-stranded
Z: Z) RNA is more stable than DNA
Answer: W) W) RNA is used as a catalyst, while DNA is not
Which of these bones is fused in a bird's body? W) Radius X) Clavicle Y) Humerus Z) Scapula
W: W) Radius
X: X) Clavicle
Y: Y) Humerus
Z: Z) Scapula
Answer: X) X) Clavicle
What is the least common multiple of 3, 10, and 20?
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A hiker traveled 4 kilometers east, proceeded 11 kilometers south, then 6 kilometers west, and finally 6 kilometers north. How far, in kilometers, is the hiker from the starting point?
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What device uses high rotational speed to increase the fraction of the fissile isotope of uranium needed for nuclear fuel?
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Which of the following would NOT be considered raw data? W) Geographic coordinates of a mountain X) Efficiency of a solar cell Y) Satellite images of a storm Z) Temperature of a fish tank
W: W) Geographic coordinates of a mountain
X: X) Efficiency of a solar cell
Y: Y) Satellite images of a storm
Z: Z) Temperature of a fish tank
Answer: X) X) Efficiency of a solar cell
What is the next brightest star in the night sky, after Sirius?
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In which of the following rock types are you most likely to find cross-bedding? W) Sandstone X) Basalt Y) Gneiss Z) Granite
W: W) Sandstone
X: X) Basalt
Y: Y) Gneiss
Z: Z) Granite
Answer: W) W) Sandstone
If a number is increased by 40%, by what percent is its square increased?
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The graph of the line with equation $y = 3x + 2$ is reflected through the x-axis. What is the slope-intercept equation of the reflected line?
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What quantum number was adopted in 1925 to explain closely-spaced pairs of emission lines?
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In general, metals do NOT have which of the following properties? W) Contain 1, 2, or 3 valence electrons X) Low ionization energies Y) High electron affinities Z) Low electronegativities
W: W) Contain 1, 2, or 3 valence electrons
X: X) Low ionization energies
Y: Y) High electron affinities
Z: Z) Low electronegativities
Answer: Y) Y) High electron affinities
Why do invasive species tend to outcompete native species? W) Invasive species are better adapted to the area X) Invasive species have no native predators Y) Invasive species remove competition from the area Z) Invasive species reduce predation pressure on other species
W: W) Invasive species are better adapted to the area
X: X) Invasive species have no native predators
Y: Y) Invasive species remove competition from the area
Z: Z) Invasive species reduce predation pressure on other species
Answer: X) X) Invasive species have no native predators
Identify all of the following four amino acids that you would NOT expect to find buried in the core of a folded protein: 1) Asparagine; 2) Phenylalanine; 3) Methionine; 4) Lysine.
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The measure of an exterior angle of a regular polygon is 20°. How many sides does the polygon have?
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A prism with 12 edges has how many faces?
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Which of the following is NOT an evaporite mineral? W) Halite X) Gypsum Y) Corundum Z) Borax
W: W) Halite
X: X) Gypsum
Y: Y) Corundum
Z: Z) Borax
Answer: Y) Y) Corundum
Identify all of the following four geologic time intervals that can be identified in the rock record using index fossils: 1) Hadean; 2) Devonian; 3) Neolithic; 4) Jurassic.
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