HS Sample Set 1, Round 8 from NSB
The reaction $$\mathrm{Fe_3O_4 + 4H_2 \to 3Fe + 4H_2O}$$ is an example of what class of chemical reaction? W) decomposition X) single replacement Y) combustion Z) combination
W: W) decomposition
X: X) single replacement
Y: Y) combustion
Z: Z) combination
Answer: X) X) single replacement
Find the mass percent composition, rounded to the nearest whole number, for each atom in $$\mathrm{KClO_3}$$. Assume the atomic masses of potassium = 39, chlorine = 35, and oxygen = 16.
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Which of the following is the highest level of structural organization in myoglobin? W) primary X) secondary Y) tertiary Z) quaternary
W: W) primary
X: X) secondary
Y: Y) tertiary
Z: Z) quaternary
Answer: Y) Y) tertiary
Name all of the following 4 choices that are characteristic of *E. coli*: 1) gram negative; 2) an enteric organism; 3) non-motile; 4) bacillus.
Choices:
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Which of the following colors of light has the greatest angle of refraction in normal glass? W) yellow X) green Y) orange Z) blue
W: W) yellow
X: X) green
Y: Y) orange
Z: Z) blue
Answer: Z) Z) blue
If a beam of white light passes through a prism, which of the following colors will emerge on the other side at the lowest angle with respect to the incident beam? W) orange X) indigo Y) green Z) blue
W: W) orange
X: X) indigo
Y: Y) green
Z: Z) blue
Answer: W) W) orange
Which of the following is NOT true: W) all central angles in a regular polygon are equal X) irregular polygons are not considered to have centers and have no central angles Y) the circumcircle of a regular polygon is the circle that passes through at least one vertex Z) all regular polygons are convex
W: W) all central angles in a regular polygon are equal
X: X) irregular polygons are not considered to have centers and have no central angles
Y: Y) the circumcircle of a regular polygon is the circle that passes through at least one vertex
Z: Z) all regular polygons are convex
Answer: Y) Y) the circumcircle of a regular polygon is the circle that passes through at least one vertex
Find the sum of all interior angles, in degrees, in a regular polygon having 100 sides.
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Because of Earth’s rotation and shape, ocean currents are intensified along which of the following borders of all oceans: W) northern X) southern Y) eastern Z) western
W: W) northern
X: X) southern
Y: Y) eastern
Z: Z) western
Answer: Z) Z) western
Which of the following is NOT generally characteristic of a passive continental margin: W) relatively wide continental shelf X) oceanic trench Y) terrigenous sediment Z) continental rise
W: W) relatively wide continental shelf
X: X) oceanic trench
Y: Y) terrigenous sediment
Z: Z) continental rise
Answer: X) X) oceanic trench
The sea nettle is the Bering Sea’s most common: W) jellyfish X) crab Y) sea urchin Z) walleye pollock
W: W) jellyfish
X: X) crab
Y: Y) sea urchin
Z: Z) walleye pollock
Answer: W) W) jellyfish
1 cubic foot per second equals approximately how many gallons per minute: W) 256 X) 449 Y) 646 Z) 724
W: W) 256
X: X) 449
Y: Y) 646
Z: Z) 724
Answer: X) X) 449
Which of the terrestrial planets has the lowest albedo?
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Most of the hydrogen that makes up the planet Jupiter is in what phase?
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Which of the following is the theoretical end of a titration: W) end point X) indicator point Y) equivalence point Z) standardization point
W: W) end point
X: X) indicator point
Y: Y) equivalence point
Z: Z) standardization point
Answer: Y) Y) equivalence point
In a strong acid-base titration, what is the pH of the solution when the equivalence point is reached?
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What specific class of antibodies is most commonly responsible for degranulation of basophils or mast cells?
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Which of the following is a group of about 20 proteins that aid in the attraction and phagocytosis of microorganisms by macrophages: W) alpha interferons X) complement system Y) TNF Z) hemopoietins
W: W) alpha interferons
X: X) complement system
Y: Y) TNF
Z: Z) hemopoietins
Answer: X) X) complement system
What property of a wave is generally said to increase during constructive interference?
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What is the most common name for the Law or principle dictating that the amount of a substance that is released or deposited from an electrode is directly proportional to the amount of electric current passing through the circuit?
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Find two mean proportionals between the numbers 3 and 24.
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Find the numerical value of the geometric mean of the following 4 values: 21; 23; 28; 28.
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Many of the driest locales on Earth are situated between which of the following latitudes: W) 0º to 15º X) 15º to 30º Y) 30º to 45º Z) 45º to 60º
W: W) 0º to 15º
X: X) 15º to 30º
Y: Y) 30º to 45º
Z: Z) 45º to 60º
Answer: X) X) 15º to 30º
Which of the following is NOT true of breccia rock: W) it is sedimentary X) its color is variable Y) its texture consists of rounded pebbles, cobbles and boulders Z) fragments may be any type of igneous, metamorphic, or sedimentary rocks
W: W) it is sedimentary
X: X) its color is variable
Y: Y) its texture consists of rounded pebbles, cobbles and boulders
Z: Z) fragments may be any type of igneous, metamorphic, or sedimentary rocks
Answer: Y) Y) its texture consists of rounded pebbles, cobbles and boulders
In the northern hemisphere, which of the following degrees latitude would experience a length of day of 6 months: W) 0 X) 30 Y) 60 Z) 90
W: W) 0
X: X) 30
Y: Y) 60
Z: Z) 90
Answer: Z) Z) 90
Which of the following is a substance that is generally considered friable: W) concrete X) topaz Y) quartz Z) perlite
W: W) concrete
X: X) topaz
Y: Y) quartz
Z: Z) perlite
Answer: Z) Z) perlite
From what specific celestial body do meteor showers originate?
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Of which of the following is the Hubble Law most directly a consequence: W) Doppler shift X) Kirchoff’s second law Y) Kepler’s second law Z) Drake’s equation
W: W) Doppler shift
X: X) Kirchoff’s second law
Y: Y) Kepler’s second law
Z: Z) Drake’s equation
Answer: W) W) Doppler shift
A sample of gas is heated from 300 K to 500 K. If the container is sealed and of fixed volume, which of the following will remain constant: W) the average kinetic energy of the gas molecules X) the average speed of the gas molecules Y) the density of the gas Z) the pressure of the gas
W: W) the average kinetic energy of the gas molecules
X: X) the average speed of the gas molecules
Y: Y) the density of the gas
Z: Z) the pressure of the gas
Answer: Y) Y) the density of the gas
Which of the following does NOT have the electron configuration of argon: W) O₂⁻ X) Cl⁻ Y) S²⁻ Z) K⁺
W: W) O₂⁻
X: X) Cl⁻
Y: Y) S²⁻
Z: Z) K⁺
Answer: W) W) O₂⁻
In angiosperm seed development, what fuses with the second sperm nucleus to form the endosperm?
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In what specific part of a eukaryotic cell will pyruvate be converted into acetyl Co-enzyme A?
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Which of the following are the most important calibration references that Celsius used to devise his temperature scale: W) melting point and boiling point of water X) ice-point and freeze-thaw point of water Y) specific gravity of water Z) boiling point and steam point of water
W: W) melting point and boiling point of water
X: X) ice-point and freeze-thaw point of water
Y: Y) specific gravity of water
Z: Z) boiling point and steam point of water
Answer: W) W) melting point and boiling point of water
Which of the following is the MOST reliable measure of the remaining percentage of stored energy in a lead acid battery: W) pH of the electrolyte X) voltage remaining in the battery as measured on a voltmeter Y) amount of oxygen gas released Z) specific gravity of the electrolyte
W: W) pH of the electrolyte
X: X) voltage remaining in the battery as measured on a voltmeter
Y: Y) amount of oxygen gas released
Z: Z) specific gravity of the electrolyte
Answer: Z) Z) specific gravity of the electrolyte
There are 10 people on a bus who, when ranked from youngest to oldest, all differ from those on the bus closest in age to them by the same number of years. If the youngest is 6 and the oldest is 51, what is the common difference in their age?
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Solve the following equation for all real values of $$x$$: $$(x + 3)^2 = 16$$
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When geologists find pillow basalts in ancient rock sequences, which of the following BEST explains their presence: W) the area was once underwater X) volcanic bombs and lapilli landed on snow or ice and quickly cooled Y) they hardened in mid-air, sometimes forming a tear-drop shape Z) nearby volcanoes erupted enormous quantities of ash
W: W) the area was once underwater
X: X) volcanic bombs and lapilli landed on snow or ice and quickly cooled
Y: Y) they hardened in mid-air, sometimes forming a tear-drop shape
Z: Z) nearby volcanoes erupted enormous quantities of ash
Answer: W) W) the area was once underwater
What is the general name for the myriad of suspended particles or aerosols in the Earth’s atmosphere that allow rain droplets to undergo coalescence?
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Which of the following is closest to the meaning of the suffix ‘tropic’ (read as: troh-PIK): W) hot X) wet Y) changing Z) under
W: W) hot
X: X) wet
Y: Y) changing
Z: Z) under
Answer: Y) Y) changing
In which of the following locations has water at its highest temperature ever been recorded in nature: W) within gullies on Venus X) in very deep ocean hydrothermal vents along the mid-Atlantic ridge Y) at the bottom of Yellowstone Lake in Yellowstone National Park Z) within volcanic vents high atop Hawaii’s Kilauea volcano
W: W) within gullies on Venus
X: X) in very deep ocean hydrothermal vents along the mid-Atlantic ridge
Y: Y) at the bottom of Yellowstone Lake in Yellowstone National Park
Z: Z) within volcanic vents high atop Hawaii’s Kilauea volcano
Answer: X) X) in very deep ocean hydrothermal vents along the mid-Atlantic ridge
What is the most accurate term astronomers use for the time it takes for a planet to orbit the Sun relative to the stars?
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What terrestrial planet has the longest sidereal period?
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In the electrolysis of a copper chloride solution, what forms at the cathode and anode, respectively?
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According to standard chemical nomenclature, what is the formula for ammonium sulfate?
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How many human ova are produced by a full round of meiosis from a single primary oocyte?
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Name all of the following 4 animals for which L-ascorbate is an essential nutrient: 1) humans; 2) dogs; 3) cats; 4) horses.
Choices:
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In triboelectric charging, when one object loses electrons, the object that accepts the charges acquires the same number of charges that the other object has lost. What law most directly governs this equal exchange?
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Consider an organ pipe open at both ends. For a standing wave in the pipe, what is the wavelength of the fundamental tone, in terms of the pipe’s length?
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Giving your answer in standard form, give the equation of the circle with center at (0, 0) and diameter of 6:
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What is the degree measure of the angle formed by two secants intersecting outside a circle if the measures of the intercepted arcs are 80º and 34º?
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