HS Sample Set 1, Round 6 from NSB
Which of the following most commonly functions to limit current to one direction: W) capacitor X) transformer Y) resistor Z) diode
W: W) capacitor
X: X) transformer
Y: Y) resistor
Z: Z) diode
Answer: Z) Z) diode
Debbie pushes a 10-kilogram box of books with a horizontal force of 500 newtons. What is the acceleration of the box, giving your answer in standard SI units, if friction is neglected?
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If pure water is at its boiling point at standard pressure, how many additional calories of heat are needed to convert 1 gram of water from the liquid to the vapor state?
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What is the name for the straight-chain alkane containing 5 carbons?
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In what part of photosynthesis, named after its discoverers, is NADPH used to produce 3-carbon sugar phosphate molecules?
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For every carbon dioxide molecule fixed in the Calvin-Benson cycle, how many NADPH molecules are utilized?
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What is the specific name for a common tangent that intersects the segment joining the centers of two circles?
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A flagpole casts a 100-foot long shadow. If a 6-foot tall person standing at the base of the pole casts an 8-foot shadow, how many feet tall is the flagpole?
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Which of the following happens to the shells of snails and limpets as seawater becomes increasingly acidic: W) they begin to dissolve X) they become thicker Y) they develop much later in the organism’s life Z) they become darker
W: W) they begin to dissolve
X: X) they become thicker
Y: Y) they develop much later in the organism’s life
Z: Z) they become darker
Answer: W) W) they begin to dissolve
Continental margins facing the edges of diverging tectonic plates are called: W) passive margins X) Pacific-type margins Y) transform fault margins Z) active margins
W: W) passive margins
X: X) Pacific-type margins
Y: Y) transform fault margins
Z: Z) active margins
Answer: W) W) passive margins
Giving your answer to the first decimal place, an increase of 1 °C is equivalent to an increase of how many degrees Fahrenheit?
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Convert 140 °F into degrees Celsius.
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Which of the following best explains from where most of the dust that covers the surface of the Moon came: W) weathering when the Moon was young and had an atmosphere X) interstellar dust deposited over billions of years Y) from rock pulverized from many impacts Z) from its original makeup of a soft, silicate rock
W: W) weathering when the Moon was young and had an atmosphere
X: X) interstellar dust deposited over billions of years
Y: Y) from rock pulverized from many impacts
Z: Z) from its original makeup of a soft, silicate rock
Answer: Y) Y) from rock pulverized from many impacts
What physical property of stars is most directly responsible for how long they will continue fusion?
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Which of the following is the device in a galvanic cell that completes the electric circuit by connecting the two sides of the cell with an inert electrolyte: W) electrolytic reservoir X) cathode Y) conducting wire Z) salt bridge
W: W) electrolytic reservoir
X: X) cathode
Y: Y) conducting wire
Z: Z) salt bridge
Answer: Z) Z) salt bridge
How many joules are in a single watt-hour?
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If the electronegativity difference in the bonding atoms is intermediate in strength, what general type of bond is typically formed?
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Which of the following is a molecule having a nonpolar covalent bond: W) bromine gas X) hydrogen fluoride Y) water Z) hydrogen bromide
W: W) bromine gas
X: X) hydrogen fluoride
Y: Y) water
Z: Z) hydrogen bromide
Answer: W) W) bromine gas
In which of the following organ systems of the human body do chief cells primarily function: W) excretory X) digestive Y) nervous Z) reproductive
W: W) excretory
X: X) digestive
Y: Y) nervous
Z: Z) reproductive
Answer: X) X) digestive
What section of the small intestine is the first to receive gastric contents?
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Solve the following equation for x over the integers: $$x^2 = 3x$$
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Giving your answer as a fraction reduced to lowest terms, solve the following equation for x: (Original text unclear)
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Which of the following is best used to date the age of the Earth to about 4.5 billion years old: W) uranium-235 X) uranium-238 Y) potassium-40 Z) carbon-14
W: W) uranium-235
X: X) uranium-238
Y: Y) potassium-40
Z: Z) carbon-14
Answer: X) X) uranium-238
Which of the following is a ubiquitous trace mineral found in many igneous, metamorphic and clastic sedimentary rocks, and has been used to date Earth’s oldest rocks at 4-plus billion years: W) titanite X) tremolite Y) zircon Z) beryl
W: W) titanite
X: X) tremolite
Y: Y) zircon
Z: Z) beryl
Answer: Y) Y) zircon
Which of the following is NOT true: W) only a few harmful algal bloom species actually produce toxins that are poisonous to people X) algal blooms occur in marine and freshwater environments Y) algal blooms can occur in the open ocean far from any coastal inlets Z) pollution is always to blame for harmful algal blooms along coastal waters
W: W) only a few harmful algal bloom species actually produce toxins that are poisonous to people
X: X) algal blooms occur in marine and freshwater environments
Y: Y) algal blooms can occur in the open ocean far from any coastal inlets
Z: Z) pollution is always to blame for harmful algal blooms along coastal waters
Answer: Z) Z) pollution is always to blame for harmful algal blooms along coastal waters
500 metric gigatons is approximately equal to how many pounds: W) 1.1 trillion X) 11 trillion Y) 110 trillion Z) 1,100 trillion
W: W) 1.1 trillion
X: X) 11 trillion
Y: Y) 110 trillion
Z: Z) 1,100 trillion
Answer: Z) Z) 1,100 trillion
If a star is seen just above the eastern horizon at sunset, where would it most likely be found just before the following sunrise: W) just above the eastern horizon X) half-way up in the eastern sky Y) low in the western sky Z) directly overhead
W: W) just above the eastern horizon
X: X) half-way up in the eastern sky
Y: Y) low in the western sky
Z: Z) directly overhead
Answer: Y) Y) low in the western sky
What is the MOST common organic molecule in the atmosphere of the planet Uranus?
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Radon is primarily produced naturally on Earth most directly from the decay of what element?
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By words or numbers, name all of the following four choices that are TRUE for an object moving at a constant speed: 1) it must have a constant velocity 2) it must be constantly moving in the same direction 3) it can be accelerating 4) it must have a constant weight
Choices:
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Which of the following are elements in the Periodic Table whose outer shell electrons are on two principal energy levels: W) alkali metals X) noble gases Y) alkaline Earth metals Z) transition elements
W: W) alkali metals
X: X) noble gases
Y: Y) alkaline Earth metals
Z: Z) transition elements
Answer: Z) Z) transition elements
According to standard chemical nomenclature and indicating the proper charge, what is the formula for potassium perchlorate?
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What specific type of microscopy passes a beam of electrons through an ultra-thin specimen that is usually stained with an electron-opaque substance, producing an image which can be captured by a charged coupled device?
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Order the following four objects found in the human body from the SMALLEST to the LARGEST: mitochondrion; ribosome; erythrocyte; average monocyte
Choices:
Correct Order:
Pyrex glass contains many of the same components as soda lime glass but in addition contains at least 5%: W) boric acid X) pure silica Y) clay Z) dyes
W: W) boric acid
X: X) pure silica
Y: Y) clay
Z: Z) dyes
Answer: W) W) boric acid
Which of the following BEST describes the function of boric acid in the manufacture of Pyrex or borosilicate glass: W) makes the glass more scratch-resistant X) makes the glass more brittle Y) reduces the linear coefficient of expansion of the glass Z) reduces the effect of detrimental ultraviolet light exposure
W: W) makes the glass more scratch-resistant
X: X) makes the glass more brittle
Y: Y) reduces the linear coefficient of expansion of the glass
Z: Z) reduces the effect of detrimental ultraviolet light exposure
Answer: Y) Y) reduces the linear coefficient of expansion of the glass
Which of the following are intrusive masses of igneous rock that extend downward to unknown depths and do not show signs of a definite floor: W) laccolith X) batholith Y) sill Z) volcanic neck
W: W) laccolith
X: X) batholith
Y: Y) sill
Z: Z) volcanic neck
Answer: X) X) batholith
Which of the following is NOT a common mineral in igneous rock but rather an accessory that typically occurs in small amounts: W) quartz X) muscovite Y) plagioclase Z) orthoclase
W: W) quartz
X: X) muscovite
Y: Y) plagioclase
Z: Z) orthoclase
Answer: X) X) muscovite
Simplify the following rational expression: $$\frac{y^9 x^5}{y^5 x^3}$$
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Factor the following expression completely: $$12x^2 + 24x - 36$$
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To the first decimal place, how many astronomical units is the average radius of the Earth’s orbit around the Sun?
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How many degrees above the celestial equator is the north celestial pole?
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What is the electric charge and mass of the carrier particle for the electromagnetic force?
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If the intensity of a sound is 10,000 times as loud as another sound, by how many decibels do the two sounds differ?
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Which of the following is NOT true: W) hydrogen gas found in nature exists as a monatomic molecule X) when two oxygen atoms combine to form O₂, energy is released Y) when chlorine gains one electron, it becomes larger Z) noble gases tend not to bond because of their stable valence configurations
W: W) hydrogen gas found in nature exists as a monatomic molecule
X: X) when two oxygen atoms combine to form O₂, energy is released
Y: Y) when chlorine gains one electron, it becomes larger
Z: Z) noble gases tend not to bond because of their stable valence configurations
Answer: W) W) hydrogen gas found in nature exists as a monatomic molecule
Knowing that the chemical name for gypsum is calcium sulfate dihydrate, gypsum is what percent water by weight? Assume atomic masses Ca = 40, S = 32, O = 16.
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Which of the following is the term for the transfer of genes by viruses from one prokaryote to another: W) transduction X) conjugation Y) transformation Z) relaxation
W: W) transduction
X: X) conjugation
Y: Y) transformation
Z: Z) relaxation
Answer: W) W) transduction
Name all of the following three transport systems that directly require energy to operate: active transport; facilitated diffusion; sodium-potassium pump
Choices:
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What is the general name for a hypothetical gas that obeys Boyle’s law at all temperatures and pressures?
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Which of the following is NOT true of ideal gases: W) two or more gases form homogeneous mixtures in all proportions X) collisions between gas particles are both elastic and inelastic Y) they diffuse rapidly Z) they assume the shapes of their containers
W: W) two or more gases form homogeneous mixtures in all proportions
X: X) collisions between gas particles are both elastic and inelastic
Y: Y) they diffuse rapidly
Z: Z) they assume the shapes of their containers
Answer: X) X) collisions between gas particles are both elastic and inelastic