HS Sample Set 6, Round 7 from NSB
What element is produced in a fusion of hydrogen within a star?
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Which of the following statements best explains how conglomerates differ from breccias? W) Conglomerates are comprised of interlocking crystals rather than sediments X) Breccias are comprised of less mature sediments Y) Conglomerates are formed at higher elevations Z) Breccias are formed through metamorphic processes
W: W) Conglomerates are comprised of interlocking crystals rather than sediments
X: X) Breccias are comprised of less mature sediments
Y: Y) Conglomerates are formed at higher elevations
Z: Z) Breccias are formed through metamorphic processes
Answer: X) X) Breccias are comprised of less mature sediments
In eukaryotic cells, the citric acid cycle takes place in what cellular organelle?
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Which of the following is NOT characteristic of eudicots? W) Flower parts in multiples of 4 or 5 X) Taproot Y) Two cotyledons Z) Pollen granules with one opening
W: W) Flower parts in multiples of 4 or 5
X: X) Taproot
Y: Y) Two cotyledons
Z: Z) Pollen granules with one opening
Answer: Z) Z) Pollen granules with one opening
Which of the following elements, in its gaseous state, has the greatest electron affinity? W) Fluorine X) Bromine Y) Sulfur Z) Chlorine
W: W) Fluorine
X: X) Bromine
Y: Y) Sulfur
Z: Z) Chlorine
Answer: W) W) Fluorine
What disaccharide is composed of beta-D-galactose in a beta-1,4 linkage with alpha-D-glucose?
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The equation $$-mx + 1 = 13 - 4(x + 3)$$ is an identity if $$m$$ equals which of the following? W) -4 X) -1 Y) 1 Z) 4
W: W) -4
X: X) -1
Y: Y) 1
Z: Z) 4
Answer: Z) Z) 4
If $$f(x) = -2x^2 + 8x - 4$$, which of the following is true? W) f is not a one to one function X) The graph of f opens upward Y) The graph of f has no x-intercept Z) The maximum value of f(x) is -4
W: W) f is not a one to one function
X: X) The graph of f opens upward
Y: Y) The graph of f has no x-intercept
Z: Z) The maximum value of f(x) is -4
Answer: W) W) f is not a one to one function
The acceleration of an object that is in free fall in a vacuum is which of the following? W) Proportional to the mass of the object X) Proportional to the inverse of the mass of the object Y) Independent of the mass of the object Z) Equal to the product of force and mass
W: W) Proportional to the mass of the object
X: X) Proportional to the inverse of the mass of the object
Y: Y) Independent of the mass of the object
Z: Z) Equal to the product of force and mass
Answer: Y) Y) Independent of the mass of the object
What is the name of the phenomenon that explains why the surface of water might look like a mirror when viewed from underwater?
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What do scientists call the process by which trade winds in the Pacific weaken, allowing warmer water to move toward the west coast of South America?
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Which of the following surfaces has the highest albedo? W) Fresh snow cover X) Metallic roof on a skyscraper Y) Grass Z) Asphalt
W: W) Fresh snow cover
X: X) Metallic roof on a skyscraper
Y: Y) Grass
Z: Z) Asphalt
Answer: W) W) Fresh snow cover
The fossil record of European black bears provides evidence of adaptive selection. In a population of black bears, identify the specific type of adaptive selection which would allow the average size of European black bears to increase after periods of glaciation but later decrease in size as interglacial periods warmed.
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What is the common name of the large species of lizard found in Indonesia whose unusual size is attributed to island gigantism?
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Which of the following terms would be used as a synonym for a building described with the term LEED? W) Lead contaminated X) Green Y) Renewed Z) Sanitized
W: W) Lead contaminated
X: X) Green
Y: Y) Renewed
Z: Z) Sanitized
Answer: X) X) Green
What is the term for the liquid or gas discharged after processing activities, such as in sewage treatment plants?
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Which of the following represents the enthalpy change that occurs to melt a solid at its melting point? W) Heat of fusion X) Heat of hydration Y) Heat of liquidation Z) Heat of vaporization
W: W) Heat of fusion
X: X) Heat of hydration
Y: Y) Heat of liquidation
Z: Z) Heat of vaporization
Answer: W) W) Heat of fusion
A gaseous mixture of nitrogen, oxygen, and argon have molar fractions of 0.25, 0.65, and 0.010, respectively. What is the pressure in atmospheres of nitrogen if the total pressure of the mixture is 4.0 atmospheres?
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What is the solution set of the inequality $$ (x - 1)^2 \le 0 $$?
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If function $$f(x) = \frac{4x^2 - 12x}{x^2 - 9}$$, then at $$x = 3$$, which of the following is true? W) The graph of f has a vertical asymptote X) The graph of f has a hole on the x axis Y) The graph of f has a hole at (3, 2) Z) f(x) = 0
W: W) The graph of f has a vertical asymptote
X: X) The graph of f has a hole on the x axis
Y: Y) The graph of f has a hole at (3, 2)
Z: Z) f(x) = 0
Answer: Y) Y) The graph of f has a hole at (3, 2)
An object is suspended from a spring balance in an elevator. The reading of the balance is 200 newtons when the elevator is at rest. If the balance reading later is 190 newtons, which of the following best describes how the elevator could be moving at that time? W) Downward at constant speed X) Downward and increasing in speed Y) Upward at constant speed Z) Upward and increasing in speed
W: W) Downward at constant speed
X: X) Downward and increasing in speed
Y: Y) Upward at constant speed
Z: Z) Upward and increasing in speed
Answer: X) X) Downward and increasing in speed
A small object is 10 centimeters in front of a plane mirror. Standing 20 centimeters behind the object, 30 centimeters from the mirror, at what distance in centimeters must you focus your eyes to see the object’s mirror image clearly? W) 20 X) 30 Y) 40 Z) 50
W: W) 20
X: X) 30
Y: Y) 40
Z: Z) 50
Answer: Y) Y) 40
What is the boundary between the troposphere and the stratosphere called?
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Which of the following stellar reactions releases the most energy? W) Hydrogen to helium X) Helium to oxygen Y) Oxygen to silicon Z) Silicon to iron
W: W) Hydrogen to helium
X: X) Helium to oxygen
Y: Y) Oxygen to silicon
Z: Z) Silicon to iron
Answer: W) W) Hydrogen to helium
Which of the following organ systems is responsible for the secretion of hormones? W) Endocrine X) Reproductive Y) Circulatory Z) Immune
W: W) Endocrine
X: X) Reproductive
Y: Y) Circulatory
Z: Z) Immune
Answer: W) W) Endocrine
In an area originally devoid of life, what is the name for the first community to become established?
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Which of the following sectors in the U.S. uses the most petroleum? W) Industry X) Residential Y) Transportation Z) Construction
W: W) Industry
X: X) Residential
Y: Y) Transportation
Z: Z) Construction
Answer: Y) Y) Transportation
Which of the following statements is true about the relationship between a BTU and a kilocalorie? W) A BTU has about one tenth the energy of a kilocalorie X) A BTU has about one fourth the energy of a kilocalorie Y) A BTU has about the same amount of energy as a kilocalorie Z) A BTU has about 251 times the energy of a kilocalorie
W: W) A BTU has about one tenth the energy of a kilocalorie
X: X) A BTU has about one fourth the energy of a kilocalorie
Y: Y) A BTU has about the same amount of energy as a kilocalorie
Z: Z) A BTU has about 251 times the energy of a kilocalorie
Answer: X) X) A BTU has about one fourth the energy of a kilocalorie
Ethylene has which of the following? W) 2 pi bonds X) 2 sigma bonds and 1 pi bond Y) 3 sigma bonds Z) 5 sigma bonds and 1 pi bond
W: W) 2 pi bonds
X: X) 2 sigma bonds and 1 pi bond
Y: Y) 3 sigma bonds
Z: Z) 5 sigma bonds and 1 pi bond
Answer: Z) Z) 5 sigma bonds and 1 pi bond
What is the electron-pair geometry for ICl₄⁻?
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The lines defined by $$y = 2x$$ and $$2y = -x$$ are which of the following? W) Parallel X) Perpendicular Y) Horizontal Z) Vertical
W: W) Parallel
X: X) Perpendicular
Y: Y) Horizontal
Z: Z) Vertical
Answer: X) X) Perpendicular
Providing your answers as fractions in lowest terms, what are the x-intercepts of the graph of $$y = 12x^2 - 5x - 2$$?
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Which of the following products has the same units as power? W) Work and time X) Force and distance Y) Force and velocity Z) Force and acceleration
W: W) Work and time
X: X) Force and distance
Y: Y) Force and velocity
Z: Z) Force and acceleration
Answer: Y) Y) Force and velocity
When turned on, a ceiling fan reaches 100 revolutions per minute in 30 seconds. When turned off, it coasts to a stop in 60 seconds. What is the ratio of the average angular acceleration in the first 30 seconds after it was turned on to that observed after it was turned off?
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Which form of electromagnetic radiation does NASA primarily use to transfer information from spacecraft back to Earth?
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Which of the following prevents limestone from forming below 5000 meters in the open ocean? W) The conditions of the overlying water at that depth cause a net dissolution of calcite X) The organisms that form limestone are not found in pelagic environments Y) The complex deep ocean ecosystem results in the consumption of limestone-forming organisms Z) Ocean temperature along abyssal plains is cold enough to prevent compaction and cementation of sediments
W: W) The conditions of the overlying water at that depth cause a net dissolution of calcite
X: X) The organisms that form limestone are not found in pelagic environments
Y: Y) The complex deep ocean ecosystem results in the consumption of limestone-forming organisms
Z: Z) Ocean temperature along abyssal plains is cold enough to prevent compaction and cementation of sediments
Answer: W) W) The conditions of the overlying water at that depth cause a net dissolution of calcite
Which of the following statements is NOT true about lichen? W) It is a composite organism X) It is composed of algae and moss Y) It is hardy and slow-growing Z) It usually reproduces asexually
W: W) It is a composite organism
X: X) It is composed of algae and moss
Y: Y) It is hardy and slow-growing
Z: Z) It usually reproduces asexually
Answer: X) X) It is composed of algae and moss
Many angiosperms flower at the same time every year, even though they may have started growing at different times. Their flowering is a response to the changing length of day and night. What is the name of this phenomenon?
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What is the term for power that is consumed by electronics when they are not in use?
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Which of the following statements is NOT true about electronic tattoos? W) They are flexible electronic circuits, thinner than a human hair X) They stay on the skin through the adhesion forces between the atoms of the tattoo and the atoms of the skin Y) They are powered by the individual’s movements Z) The circuits’ filamentary serpentine shape allows them to bend, twist, scrunch and stretch while maintaining functionality
W: W) They are flexible electronic circuits, thinner than a human hair
X: X) They stay on the skin through the adhesion forces between the atoms of the tattoo and the atoms of the skin
Y: Y) They are powered by the individual’s movements
Z: Z) The circuits’ filamentary serpentine shape allows them to bend, twist, scrunch and stretch while maintaining functionality
Answer: Y) Y) They are powered by the individual’s movements
Give the name of the periodic table group that contains elements that are silver in color, soft, and react explosively with water.
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A particle has a de Broglie wavelength of 3 × 10⁻¹⁰ meters when it is traveling at 1.1 × 10⁷ meters per second. Expressing your answer in kilograms and in scientific notation to one significant figure, what is its approximate mass?
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What is the value of $$i^4$$?
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The hyperbola with equation $$\frac{x^2}{25} - \frac{y^2}{36} = 1$$ possesses which of the following characteristics? W) It opens left and right and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$ X) It opens up and down and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$ Y) It opens left and right and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$ Z) It opens up and down and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$
W: W) It opens left and right and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$
X: X) It opens up and down and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$
Y: Y) It opens left and right and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$
Z: Z) It opens up and down and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$
Answer: X) X) It opens up and down and has asymptotes $$y = \tfrac{5}{x}$$ and $$y = -\tfrac{5}{x}$$
A girl runs up one flight of steps. Which of the following factors does NOT affect the work done by the girl against gravity? W) Her mass X) Height of the flight of steps Y) Her speed Z) Acceleration due to gravity
W: W) Her mass
X: X) Height of the flight of steps
Y: Y) Her speed
Z: Z) Acceleration due to gravity
Answer: Y) Y) Her speed
What is the efficiency of the body when a cyclist expends 1000 watts of power to deliver mechanical energy to the bicycle at a rate of 100 watts?
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Japan consists of a volcanic island arc and trench system. This is indicative of which type of tectonic plate boundary?
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Which of the following describes solifluction, the slow mass movement of soil resulting from freeze-thaw action? W) It occurs in soils found above permafrost, which prevents drainage X) It results in the rotational slip of sediments along a slope Y) It requires coarse, shallow soils developed over bedrock along steep slopes Z) It involves the gradual up and down motion of soil particles and net creep of soils downslope
W: W) It occurs in soils found above permafrost, which prevents drainage
X: X) It results in the rotational slip of sediments along a slope
Y: Y) It requires coarse, shallow soils developed over bedrock along steep slopes
Z: Z) It involves the gradual up and down motion of soil particles and net creep of soils downslope
Answer: W) W) It occurs in soils found above permafrost, which prevents drainage
Which of the following statements about the lone star tick is true? W) It only lives in Texas X) It transmits Lyme disease Y) It feeds on humans, dogs, and cats Z) It is relatively passive
W: W) It only lives in Texas
X: X) It transmits Lyme disease
Y: Y) It feeds on humans, dogs, and cats
Z: Z) It is relatively passive
Answer: Y) Y) It feeds on humans, dogs, and cats
What is the common name of the woody shrub or small tree with the following three characteristics: 1) 7 to 13 leaflets per pinnate leaf, 2) grows in very wet or flooded soils, and 3) contains a resin that causes skin and mucus membrane irritation to humans?
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