HS Sample Set 6, Round 6 from NSB
What is the common name of the group of marine spiny-finned fish of the order Heterosomata, all of which, when adult, swim along the sea floor on one side of the body, which is highly compressed and has both eyes on the uppermost side?
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Which of the following statements is NOT true about otters? W) Newborn otters are taken care of by their fathers only X) Their dens are called holts or couches Y) They feed on fish, shellfish, amphibians and birds Z) A male otter is called a dog
W: W) Newborn otters are taken care of by their fathers only
X: X) Their dens are called holts or couches
Y: Y) They feed on fish, shellfish, amphibians and birds
Z: Z) A male otter is called a dog
Answer: W) W) Newborn otters are taken care of by their fathers only
Which of the following best describes where the salt in ocean water comes from? W) Melting of glacial ice X) Weathering of continental rocks Y) Decomposition of plants and animals Z) Precipitation of salty rain
W: W) Melting of glacial ice
X: X) Weathering of continental rocks
Y: Y) Decomposition of plants and animals
Z: Z) Precipitation of salty rain
Answer: X) X) Weathering of continental rocks
Cayes [KAYS] are small sandy islands formed on the surface of coral reefs in tropical areas like the coast of Belize. The sand on these cayes is primarily composed of which of the following? W) Silicate X) Calcium carbonate Y) Sulfide Z) Halide
W: W) Silicate
X: X) Calcium carbonate
Y: Y) Sulfide
Z: Z) Halide
Answer: X) X) Calcium carbonate
Which of the following cells cannot be recharged? W) Dry X) Wet Y) Primary Z) Secondary
W: W) Dry
X: X) Wet
Y: Y) Primary
Z: Z) Secondary
Answer: Y) Y) Primary
Changing which of the following will NOT result in a change in the voltage induced in a rotating wire coil? W) Rate of rotation X) Wire resistance Y) Number of coil loops Z) Average loop area
W: W) Rate of rotation
X: X) Wire resistance
Y: Y) Number of coil loops
Z: Z) Average loop area
Answer: X) X) Wire resistance
What is x equal to in the following expression: logₓ 7 = 1?
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If the length, width, and height of a right rectangular prism are in the ratio of 3 : 4 : 12, find the height in meters of the solid if the diagonal of the solid is 26 meters long.
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When assigning electrons to subshells, which of the following subshells will be filled first? W) 4f X) 5s Y) 5d Z) 6s
W: W) 4f
X: X) 5s
Y: Y) 5d
Z: Z) 6s
Answer: X) X) 5s
Which of the gas laws is demonstrated when an aerosol can is thrown into a fire and explodes?
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What is the term for a device used to determine or measure the presence of electrostatic charges?
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What is the efficiency of an appliance whose useful energy output is 5 joules and wasted energy is 20 joules?
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Given that $$g(x) \le f(x) \le h(x)$$ for all \(x\), \(\displaystyle\lim_{x\to a} g(x) = M\), and \(\displaystyle\lim_{x\to a} h(x) = M\), what is \(\displaystyle\lim_{x\to a} f(x)\)?
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What is the largest possible real domain of \(f(x) = \ln(3x - 1)\)?
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Which of the following layers of the atmosphere allows AM radio stations to transmit over great distances at night? W) Ionosphere X) Stratosphere Y) Thermosphere Z) Troposphere
W: W) Ionosphere
X: X) Stratosphere
Y: Y) Thermosphere
Z: Z) Troposphere
Answer: W) W) Ionosphere
Which of the following steps in atoll formation is the most mature? W) Erupting volcanic island X) Lagoon Y) Volcanic island with barrier reef Z) Volcanic island with fringing reef
W: W) Erupting volcanic island
X: X) Lagoon
Y: Y) Volcanic island with barrier reef
Z: Z) Volcanic island with fringing reef
Answer: X) X) Lagoon
In 1868, observers of a solar eclipse first noticed a bright yellow spectral line. They theorized that this was due to a new element and gave it what sun-inspired name?
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An electroscope is negatively charged, with the leaves at an angle of about 45°. When a negatively charged rod is slowly brought near the plate of the electroscope, the leaves do which of the following? W) Repel X) Attract Y) Repel then attract Z) Fall to zero then repel
W: W) Repel
X: X) Attract
Y: Y) Repel then attract
Z: Z) Fall to zero then repel
Answer: W) W) Repel
W is one of the vertices of a polygon. If there are 8 diagonals of the polygon that contain W, how many sides does the polygon have?
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A fair standard six-sided die is rolled two times. What is the probability that the sum of the numbers on the two rolls will be greater than 9?
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What is the name of the bond linking each fatty acid to glycerol in a triglyceride?
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Several candidates have been proposed as the discoverer of oxygen. Who, however, is the scientist who most carefully documented his work and thus has been credited with its discovery?
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Which of the following particles has the least penetrating power? W) Neutron X) Alpha particle Y) Beta particle Z) Positron
W: W) Neutron
X: X) Alpha particle
Y: Y) Beta particle
Z: Z) Positron
Answer: X) X) Alpha particle
The power produced by a wind turbine depends primarily on which of the following parameters? W) Air volume X) Wind pressure Y) Blade radius Z) Air coefficient
W: W) Air volume
X: X) Wind pressure
Y: Y) Blade radius
Z: Z) Air coefficient
Answer: Y) Y) Blade radius
Which gas was in short supply in the Earth’s atmosphere prior to the evolution of the citric acid cycle?
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Neurons can communicate with each another at synapses via synaptic vesicles. Which of the following does NOT participate in communication at these sites? W) Neurotransmitter X) Gated channels Y) ATP dependent channels Z) Acetylcholine
W: W) Neurotransmitter
X: X) Gated channels
Y: Y) ATP dependent channels
Z: Z) Acetylcholine
Answer: Y) Y) ATP dependent channels
Kilauea and Mauna Loa are examples of which of the following types of volcanoes? W) Shield X) Composite Y) Cinder cone Z) Transform fault
W: W) Shield
X: X) Composite
Y: Y) Cinder cone
Z: Z) Transform fault
Answer: W) W) Shield
What is the geologic term for the sinking of large areas of land due to compaction of drained soil and rock layers?
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A lunar vehicle on Earth moves at 10 kilometers per hour. When it travels at the same speed on the Moon, what is its momentum in comparison to its momentum on Earth, assuming that the Moon’s gravitational force is one fifth that of Earth’s?
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Coulomb’s law states that an electric force between two charges is inversely proportional to the square of what quantity?
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Which of the following numbers is NOT prime? W) 107 X) 109 Y) 111 Z) 113
W: W) 107
X: X) 109
Y: Y) 111
Z: Z) 113
Answer: Y) Y) 111
Todd the Tortoise is 268 years old, while Sammy the Snail is 32 years old. How many years will it take for Todd’s age to be exactly 5 times Sammy’s age?
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What element has the following four characteristics: 1) it occurs naturally only in combination with other elements in minerals; 2) it is used primarily as a hardening agent in alloys; 3) its dust is highly toxic; and 4) it is an alkaline earth metal?
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Identify all of the following four compounds that are ionic: 1) sodium sulfate; 2) methane; 3) ammonium chloride; 4) beryllium iodide.
Choices:
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Rectifiers are used in computers and other appliances to do which of the following? W) Convert direct current to alternating current X) Convert alternating current to direct current Y) Provide a steady amount of power at all times Z) Reduce the energy consumption of an appliance
W: W) Convert direct current to alternating current
X: X) Convert alternating current to direct current
Y: Y) Provide a steady amount of power at all times
Z: Z) Reduce the energy consumption of an appliance
Answer: X) X) Convert alternating current to direct current
When inductors are present in circuits with alternating currents, what type of power do they consume?
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Which of the following best describes why the xylem is an important plant tissue? W) It transports water and minerals from the roots to the leaves X) It transports water and minerals from the leaves to the roots Y) It is the best part of the plant to eat Z) It gives a plant its strength to stand straight
W: W) It transports water and minerals from the roots to the leaves
X: X) It transports water and minerals from the leaves to the roots
Y: Y) It is the best part of the plant to eat
Z: Z) It gives a plant its strength to stand straight
Answer: W) W) It transports water and minerals from the roots to the leaves
Your body has approximately one million B cells and ten million different T cells. A gram-negative bacterium enters your body and one of your B cells binds to the bacterium via the BCR recognizing the LPS. Which of the following will happen next? W) The B cell will proliferate X) The virus will enter the B cell Y) Similar T cells will be destroyed Z) The B cell will be destroyed
W: W) The B cell will proliferate
X: X) The virus will enter the B cell
Y: Y) Similar T cells will be destroyed
Z: Z) The B cell will be destroyed
Answer: W) W) The B cell will proliferate
Given the current climatic conditions on Earth, at which of the following locations would a glacier most likely form? W) 0° latitude at an elevation of 6,000 meters X) 15° N latitude at an elevation of 4,000 meters Y) 30° N latitude at an elevation of 3,000 meters Z) 45° N latitude at an elevation of 1,000 meters
W: W) 0° latitude at an elevation of 6,000 meters
X: X) 15° N latitude at an elevation of 4,000 meters
Y: Y) 30° N latitude at an elevation of 3,000 meters
Z: Z) 45° N latitude at an elevation of 1,000 meters
Answer: W) W) 0° latitude at an elevation of 6,000 meters
The analysis of which of the following fossil types from ancient vertebrates provides important information about the diet and biota of ancient environments? W) Tracks X) Coprolite Y) Burrows Z) Fulgurite
W: W) Tracks
X: X) Coprolite
Y: Y) Burrows
Z: Z) Fulgurite
Answer: X) X) Coprolite
What is the SI unit of inductance?
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A radioactive element has a half life of 50 seconds. Which of the following is true of a sample of such an element? W) Every atom of the element decays after 50 seconds X) Every atom of the element decays after 100 seconds Y) After 100 seconds, one fourth of the sample has decayed Z) After 100 seconds, three fourths of the sample has decayed
W: W) Every atom of the element decays after 50 seconds
X: X) Every atom of the element decays after 100 seconds
Y: Y) After 100 seconds, one fourth of the sample has decayed
Z: Z) After 100 seconds, three fourths of the sample has decayed
Answer: Z) Z) After 100 seconds, three fourths of the sample has decayed
Give the coordinates of the point where the line \(3x + 2y = 18\) intersects the x axis.
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A jar contains 50 marbles. Exactly 10% are green, 20% are blue, 30% are yellow, and the rest are orange. Which of the following is the probability of randomly picking first a blue marble, replacing it, and then picking an orange marble? W) 1/25 X) 2/25 Y) 3/25 Z) 4/25
W: W) 1/25
X: X) 2/25
Y: Y) 3/25
Z: Z) 4/25
Answer: X) X) 2/25
Which of the following is NOT a buffering agent? W) Magnesium oxide X) Rubidium hydroxide Y) Ammonia Z) Monopotassium phosphate
W: W) Magnesium oxide
X: X) Rubidium hydroxide
Y: Y) Ammonia
Z: Z) Monopotassium phosphate
Answer: X) X) Rubidium hydroxide
What is the name of the reaction, commonly used in lecture demonstrations, in which two colorless solutions are mixed, and the liquid turns to a shade of dark blue after a short time delay?
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What is the common name of the unicellular organism that has the following characteristics: 1) it has chloroplasts and can make its own food; 2) it can also ingest food from its environment; 3) it usually lives in ponds or puddles; 4) it moves by a flagellum; 5) it has an eyespot that detects light.
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The gram stain can be used to distinguish between different prokaryotes based on which of the following? W) Glucose metabolism X) Flagella Y) Lactose metabolism Z) Cell wall morphology
W: W) Glucose metabolism
X: X) Flagella
Y: Y) Lactose metabolism
Z: Z) Cell wall morphology
Answer: Z) Z) Cell wall morphology
Which of the following phenomena are responsible for orange and red sunsets? W) Dust particles in the atmosphere X) Ice crystals in the atmosphere Y) Water droplets in the atmosphere Z) Water vapor in the atmosphere
W: W) Dust particles in the atmosphere
X: X) Ice crystals in the atmosphere
Y: Y) Water droplets in the atmosphere
Z: Z) Water vapor in the atmosphere
Answer: W) W) Dust particles in the atmosphere
Uranus was discovered in 1781. Rounding down to the nearest whole number, how many complete revolutions around the Sun has it made since being discovered?
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