HS Sample Set 1, Round 3 from NSB
What is the MOST common term for the type of energy that is most directly related to the energy of atoms, molecules and other small particles that are in random motion within a system?
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In electrochemical cells, what is the most common term for the electrode that acts as the negative electrode?
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If the electronegativity difference in the bonding atoms is large, what general type of bond is formed?
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Which of the following molecules has a double covalent bond: W) hydrogen X) oxygen Y) nitrogen Z) methane
W: W) hydrogen
X: X) oxygen
Y: Y) nitrogen
Z: Z) methane
Answer: X) X) oxygen
Which of the following BEST describes the function of the golgi (read as: GOAL-gee) complex: W) metabolism of carbohydrates X) production of peroxides Y) modification and packaging of proteins for exocytosis Z) storage of lipids
W: W) metabolism of carbohydrates
X: X) production of peroxides
Y: Y) modification and packaging of proteins for exocytosis
Z: Z) storage of lipids
Answer: Y) Y) modification and packaging of proteins for exocytosis
Most corticosteroids are synthesized in what specific part of the human body?
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Simplify the following, giving your answer in proper scientific notation: $$ (6.0\times10^{12})(2.0\times10^{10})^2 $$
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Factor the following expression completely: $$81x^2 + 180xy + 100y^2$$
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In the oceans, waves and surf currents are generated by: W) wind X) El-Nino Y) salinity and temperature gradients Z) the Intertropical Convergence Zone
W: W) wind
X: X) El-Nino
Y: Y) salinity and temperature gradients
Z: Z) the Intertropical Convergence Zone
Answer: W) W) wind
What is the name for the common ocean waves that are not driven by the wind but sustained by the energy they obtained by the sea?
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A hexadecimal number is a numeral system with a radix or a base of what?
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Convert a pressure of 1.2 atmospheres into millimeters mercury:
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The temperature of a star can be estimated most directly from its: W) distance X) elemental makeup Y) color Z) density
W: W) distance
X: X) elemental makeup
Y: Y) color
Z: Z) density
Answer: Y) Y) color
The local group is generally referred to as a collection of what celestial objects?
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What is the SI unit of electric charge?
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Giving your answer in kilometers per hour per second, what is the average acceleration of a truck traveling on a straight road from 10 km/h to 50 km/h in 1 minute and 20 seconds?
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What is the name for the most malleable and ductile metal which can be dissolved in aqua regia but is unaffected by air and most other reagents?
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What is the molecular formula for the conjugate acid of the following Brønsted–Lowry base: SO₄²⁻?
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What is the MOST common term for the division of a somatic cell into 2 nucleated cells following mitosis?
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What is the anticodon on a tRNA for AAA (read as: A, A, A)?
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Giving your answer as a proper fraction, what is the cube root of $$\frac{343}{125}$$?
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Find the following product, giving your answer in standard form: $$(4x^3 + x)(7x^3 + 4x^2)$$
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Which of the following cloud types is classified as a low cloud: W) altostratus X) cirrostratus Y) cumulonimbus Z) nimbostratus
W: W) altostratus
X: X) cirrostratus
Y: Y) cumulonimbus
Z: Z) nimbostratus
Answer: Z) Z) nimbostratus
Panning is a simple mining technique that is used for extracting gold deposited in: W) banded gold formations X) evaporite deposits Y) placer deposits Z) lode deposits
W: W) banded gold formations
X: X) evaporite deposits
Y: Y) placer deposits
Z: Z) lode deposits
Answer: Y) Y) placer deposits
The lush forest of the Pacific northwest is classified as what type of rain forest?
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The reaction of lead oxide in the presence of what acid is fundamental to the operation of the lead-acid rechargeable battery found in most cars?
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The stars Merak and Dubhe in the bowl of the big dipper are most commonly used to locate what star?
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The main asteroid belt is located immediately between what two planets?
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What is the most common term used to describe the velocity of an object at any one discrete moment along its path?
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What lepton was the first to be discovered?
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A beaker of concentrated aqueous ammonia is placed next to a beaker of concentrated aqueous hydrochloric acid at room temperature. After a short while, a white cloud forms between the beakers. This is a demonstration of: W) effusion X) diffusion Y) efflorescence Z) effervescence
W: W) effusion
X: X) diffusion
Y: Y) efflorescence
Z: Z) effervescence
Answer: X) X) diffusion
In addition to the “sniff test”, which of the following is a standard laboratory test for a sulfide, such as hydrogen sulfide gas: W) the gas passed over a filter paper soaked in colorless lead nitrate turns the paper brown X) when inserted into a flame, a glowing wooden splint bursts into flames Y) a flame test gives off a deep purple color Z) paper chromatography
W: W) the gas passed over a filter paper soaked in colorless lead nitrate turns the paper brown
X: X) when inserted into a flame, a glowing wooden splint bursts into flames
Y: Y) a flame test gives off a deep purple color
Z: Z) paper chromatography
Answer: W) W) the gas passed over a filter paper soaked in colorless lead nitrate turns the paper brown
Which of the following would BEST describe the quaternary structure of collagen: W) fibrous X) globular Y) planar Z) transport
W: W) fibrous
X: X) globular
Y: Y) planar
Z: Z) transport
Answer: W) W) fibrous
Which of the following BEST describes what the term virulence means: W) the specificity of a virus to cause disease in a certain host X) the ability of a microbe to cause cellular damage Y) any transmissible disease caused by a microbe Z) the degree to which a microbe causes disease or harm to its host
W: W) the specificity of a virus to cause disease in a certain host
X: X) the ability of a microbe to cause cellular damage
Y: Y) any transmissible disease caused by a microbe
Z: Z) the degree to which a microbe causes disease or harm to its host
Answer: Z) Z) the degree to which a microbe causes disease or harm to its host
If triangle ABD is congruent with triangle EFG, which of the following MUST be true: W) side AB is congruent to side EF X) side AD is congruent to side FG Y) measure of angle B = measure of angle G Z) measure of angle A = measure of angle G
W: W) side AB is congruent to side EF
X: X) side AD is congruent to side FG
Y: Y) measure of angle B = measure of angle G
Z: Z) measure of angle A = measure of angle G
Answer: W) W) side AB is congruent to side EF
Simplify the following rational expression by combining like terms, assuming x ≠ 4: $$\frac{4x^2}{x^2-16}\;-\;\frac{2x}{x-4}$$
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Which of the following best describes the luster of quartz: W) dull X) silky Y) metallic Z) vitreous
W: W) dull
X: X) silky
Y: Y) metallic
Z: Z) vitreous
Answer: Z) Z) vitreous
Which of the following is LEAST accurate regarding earthquakes: W) scientists agree that mega-quakes of magnitude 10 are very likely in the near future X) the world’s greatest earthquake zone is the circum-Pacific seismic belt Y) Alaska has the greatest number of earthquakes in the U.S. Z) deep earthquakes are much less likely to be followed by aftershocks than shallow earthquakes
W: W) scientists agree that mega-quakes of magnitude 10 are very likely in the near future
X: X) the world’s greatest earthquake zone is the circum-Pacific seismic belt
Y: Y) Alaska has the greatest number of earthquakes in the U.S.
Z: Z) deep earthquakes are much less likely to be followed by aftershocks than shallow earthquakes
Answer: W) W) scientists agree that mega-quakes of magnitude 10 are very likely in the near future
Identify the following 3 fabrics as derived from animals or plants, respectively: jute; linen; wool
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Rounded to the nearest whole degree, what is the obliquity of the ecliptic?
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What is the proper name for the closest spiral galaxy to the Milky Way?
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What is the common name for the 88 sections into which the International Astronomical Society has divided the sky?
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In one cycle of alternating current, 180º is given to the point at what fractional amount of the way through the cycle?
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If the speed of sound in a certain medium is 360 m/s, what is the wavelength, in meters, of a sound wave that has a frequency of 60 Hz?
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Which of the following is a gas that is tested for by ignition in air on contact with a lighted splint to produce a high-pitched “popping” sound: W) oxygen X) hydrogen Y) helium Z) nitrogen monoxide
W: W) oxygen
X: X) hydrogen
Y: Y) helium
Z: Z) nitrogen monoxide
Answer: X) X) hydrogen
The Lewis dot structure for the N²⁺ ion would show how many dots?
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What is the scientific term given to the shape of the E. coli bacterium?
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Name all of the following 4 plants that produce seeds with a fleshy covering that are eaten by animals and dispersed in their droppings: 1) apple; 2) orchid; 3) cherry; 4) sphagnum moss
Choices:
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Which of the following is NOT an endothermic process: W) sublimation X) melting Y) vaporization Z) condensation
W: W) sublimation
X: X) melting
Y: Y) vaporization
Z: Z) condensation
Answer: Z) Z) condensation
What is the molarity of a sodium hydroxide solution made by dissolving 4 g NaOH in 250 mL of water?
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