HS Sample Set 1, Round 4 from NSB
Which of the following is TRUE: W) chimpanzees are an ancestor of Homo sapiens X) bipedal motion dominated hominoid ancestors by about 30 million years ago Y) humans and modern apes have a common ancestor Z) Neanderthals were ancestors to modern humans
W: W) chimpanzees are an ancestor of Homo sapiens
X: X) bipedal motion dominated hominoid ancestors by about 30 million years ago
Y: Y) humans and modern apes have a common ancestor
Z: Z) Neanderthals were ancestors to modern humans
Answer: Y) Y) humans and modern apes have a common ancestor
Order the following 5 taxonomic groups with the most members to the fewest members: genus; order; phylum; class; family
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Which of the following is an element that is very important to human life, is contained in vitamin B-12, belongs to a group of transition metals, and has magnetic properties like iron: W) selenium X) cobalt Y) zinc Z) manganese
W: W) selenium
X: X) cobalt
Y: Y) zinc
Z: Z) manganese
Answer: X) X) cobalt
What is the pH of a 1 molar NaOH solution at 25ºC?
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Which of the following is the most common instrument used for measuring gas pressure: W) manometer X) anemometer Y) tensitometer Z) flow-meter
W: W) manometer
X: X) anemometer
Y: Y) tensitometer
Z: Z) flow-meter
Answer: W) W) manometer
Which of the following is TRUE of a sound wave traveling in dry air at STP at a constant velocity: W) if frequency increases, wavelength increases X) if frequency increases, wavelength decreases Y) if frequency decreases, wavelength decreases Z) if frequency increases, wavelength stays the same
W: W) if frequency increases, wavelength increases
X: X) if frequency increases, wavelength decreases
Y: Y) if frequency decreases, wavelength decreases
Z: Z) if frequency increases, wavelength stays the same
Answer: X) X) if frequency increases, wavelength decreases
If the shortest leg of a 30-60-90 right triangle is 6 inches, what is the measure, in inches, of the other two sides?
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Consider triangle ABC, where the measure of angle A = 20º, B = 117º, and C = 43º. Arrange the three sides in order of increasing length:
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Ocean tides of diminished range are called: W) spring tides X) neap tides Y) diurnal tides Z) semi-diurnal tides
W: W) spring tides
X: X) neap tides
Y: Y) diurnal tides
Z: Z) semi-diurnal tides
Answer: X) X) neap tides
Which of the following was a time when glaciation was minimal on Earth: W) Cretaceous Period X) Quaternary Period Y) Holocene Epoch Z) Pleistocene Epoch
W: W) Cretaceous Period
X: X) Quaternary Period
Y: Y) Holocene Epoch
Z: Z) Pleistocene Epoch
Answer: W) W) Cretaceous Period
1 bar equals how many Pascals?
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Meteorologists commonly use the hectopascal for air pressure. 1 000 hectopascals equals how many millibars?
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What planet of our solar system has the most nitrogen-rich atmosphere?
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Most of the galaxies in the universe are classified as which of the following: W) spiral X) elliptical Y) irregular Z) dwarf
W: W) spiral
X: X) elliptical
Y: Y) irregular
Z: Z) dwarf
Answer: Z) Z) dwarf
What is the common name for the product of human lachrymal glands?
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Name all of the following 4 plants that have their seeds typically dispersed by wind: dandelion; milkweed; maize; lupine
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Which of the following is a weak electrolyte: W) ammonia X) dilute sulfuric acid Y) 1 molar sodium chloride Z) dilute perchloric acid
W: W) ammonia
X: X) dilute sulfuric acid
Y: Y) 1 molar sodium chloride
Z: Z) dilute perchloric acid
Answer: W) W) ammonia
A molecular solid will most typically have which of the following melting points: W) very high X) high to very high Y) low Z) variable
W: W) very high
X: X) high to very high
Y: Y) low
Z: Z) variable
Answer: Y) Y) low
What particle of an atom is most directly responsible for the emission of light when an atom is excited by electromagnetic radiation?
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What is the wavelength, in meters, of a wave moving at 500 meters per second if its frequency is 20 Hertz?
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Simplify the following expression: $$\frac{5^2}{2^1\,x\,x}$$
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What is the slope of a line perpendicular to the line given by the graph of the equation –5x = –6y + 4?
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When rain freezes into pellets while falling to the ground during a winter storm, the most accurate forecast would have predicted: W) hail X) snow Y) freezing rain Z) sleet
W: W) hail
X: X) snow
Y: Y) freezing rain
Z: Z) sleet
Answer: Z) Z) sleet
Identify each of the following three rocks, respectively, as igneous, metamorphic, or sedimentary: marble; pumice; conglomerate
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Bioluminescence is a phenomenon most common in which of the following environments: W) marine X) fresh water Y) land Z) atmosphere
W: W) marine
X: X) fresh water
Y: Y) land
Z: Z) atmosphere
Answer: W) W) marine
Which of the following is a mixing incompatibility of common household products that can produce toxic products: W) vinegar and baking soda X) vinegar and bleach Y) vinegar and borax Z) castile soap and salt
W: W) vinegar and baking soda
X: X) vinegar and bleach
Y: Y) vinegar and borax
Z: Z) castile soap and salt
Answer: X) X) vinegar and bleach
Which of the following is the primary characteristic of the Jovian planets: W) high axial spin rates X) low mean density Y) retrograde orbits Z) prominent layer of liquid-metallic hydrogen
W: W) high axial spin rates
X: X) low mean density
Y: Y) retrograde orbits
Z: Z) prominent layer of liquid-metallic hydrogen
Answer: X) X) low mean density
Which one of the Gas Giant planets emits the least amount of energy?
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Eggs exit a chicken’s body through what specific structure: W) rectal plexus X) cloaca Y) rostrum Z) spiculum
W: W) rectal plexus
X: X) cloaca
Y: Y) rostrum
Z: Z) spiculum
Answer: X) X) cloaca
In which of the following areas of the human body is the zygomatic arch found: W) shoulder X) pelvis Y) head Z) knee
W: W) shoulder
X: X) pelvis
Y: Y) head
Z: Z) knee
Answer: Y) Y) head
What is the bond order between the two carbon atoms in acetylene?
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According to standard chemical nomenclature and indicating the proper charge, what is the formula for the sulfite ion?
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How many neutrons does the most common isotope of hydrogen have?
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How many neutrons and how many protons are present in a single oxygen-15 nucleus, respectively?
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Which of the following is NOT a Pythagorean triple: W) 15, 20, 25 X) 10, 24, 26 Y) 16, 24, 30 Z) 33, 44, 55
W: W) 15, 20, 25
X: X) 10, 24, 26
Y: Y) 16, 24, 30
Z: Z) 33, 44, 55
Answer: Y) Y) 16, 24, 30
Evaluate the following expression when a = 3, b = 4, c = –1, and d = –5: 2[3a – (b + c) – 4d]
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Cirrus clouds are typically found at elevations of: W) 20,000 feet and above X) 10,000 to 20,000 feet Y) 5,000 to 10,000 feet Z) 2,000 to 5,000 feet
W: W) 20,000 feet and above
X: X) 10,000 to 20,000 feet
Y: Y) 5,000 to 10,000 feet
Z: Z) 2,000 to 5,000 feet
Answer: W) W) 20,000 feet and above
Andesitic magmas typically erupt above: W) hot spots X) divergent plate boundaries Y) subduction zones Z) fissure eruptions
W: W) hot spots
X: X) divergent plate boundaries
Y: Y) subduction zones
Z: Z) fissure eruptions
Answer: Y) Y) subduction zones
Which of the following is the main reason why Africanized honey bees are much more dangerous to humans and animals than European honey bees: W) they defend their nests more intensely X) their venom is 10-times more potent Y) they can sting multiple times Z) they are larger and carry more venom
W: W) they defend their nests more intensely
X: X) their venom is 10-times more potent
Y: Y) they can sting multiple times
Z: Z) they are larger and carry more venom
Answer: W) W) they defend their nests more intensely
In most cars, what acts as the circuit ground?
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From mid-northern latitudes, during which of the following months would the constellation Orion be most prominent in the southern sky at about 10 PM: W) April X) July Y) August Z) December
W: W) April
X: X) July
Y: Y) August
Z: Z) December
Answer: Z) Z) December
What is the most common term for the apparent dividing line between night and day on the Moon?
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From which of the following is the cell wall of plants mostly composed: W) protein X) lipid monolayer Y) lipid bilayer Z) polysaccharide
W: W) protein
X: X) lipid monolayer
Y: Y) lipid bilayer
Z: Z) polysaccharide
Answer: Z) Z) polysaccharide
What is the common biological name for the product of human sublingual glands?
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Which of the following is the atomic sublevel with the next highest energy after the 4p sublevel: W) 4d X) 4f Y) 5s Z) 5p
W: W) 4d
X: X) 4f
Y: Y) 5s
Z: Z) 5p
Answer: Y) Y) 5s
Give the electronic configuration for sulfur, located in Period 3 and Group 16 of the Periodic Table.
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Jan is riding her bike northward on Main Street at 20 km/h and applies her brakes. In what direction would a physicist MOST likely record her acceleration?
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If 200 C pass through a wire in 0.5 seconds, what is the average current, in amps, passing through the wire?
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What is the most common color for the calyx of angiosperms?
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Name all of the following 4 diseases that are caused by viruses: measles; AIDS; tuberculosis; leprosy
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