HS Sample Set 6, Round 2 from NSB
What is the name of the sedimentary rock formed by compaction and cementation of rounded, pebble-size particles?
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Which of the following is NOT a characteristic of a good index fossil? W) Easy to identify X) Geographically widespread Y) Slow evolution Z) Easy to preserve
W: W) Easy to identify
X: X) Geographically widespread
Y: Y) Slow evolution
Z: Z) Easy to preserve
Answer: Y) Y) Slow evolution
Which of the following is NOT an evolutionary adaptation of plants to arid climates? W) Leaves have a waxy coating X) Carbon incorporation and the Calvin cycle are separated Y) Stomata are closed at night Z) Leaves are absent
W: W) Leaves have a waxy coating
X: X) Carbon incorporation and the Calvin cycle are separated
Y: Y) Stomata are closed at night
Z: Z) Leaves are absent
Answer: Y) Y) Stomata are closed at night
Which of the following mammal species is usually considered diurnal? W) Eastern fox squirrel X) Black-footed ferret Y) Virginia opossum Z) Raccoon
W: W) Eastern fox squirrel
X: X) Black-footed ferret
Y: Y) Virginia opossum
Z: Z) Raccoon
Answer: W) W) Eastern fox squirrel
What is the specific chemical term for the minimum pressure required to produce liquefaction of a substance at the critical temperature?
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Name the molecule with the formula CH₃COOCH₂CH₂CH₃.
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The variables x and y vary directly. Which of the following equations could represent the relationship between x and y? W) (1/5)x = 1/y X) x/y = 1/5 Y) xy = 1/5 Z) xy = 5
W: W) (1/5)x = 1/y
X: X) x/y = 1/5
Y: Y) xy = 1/5
Z: Z) xy = 5
Answer: X) X) x/y = 1/5
An open box is to be made from a rectangular piece of material 8 inches by 6 inches by cutting equal squares of side x from the four corners and turning up the sides. In terms of x, give an expression for the volume of the box in cubic inches.
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A rock is thrown vertically upwards with speed v from the edge of a cliff. At the same moment, a second rock is thrown vertically downwards with the same initial speed v. Neglecting air resistance, which of the following statements is true? W) The rock that was thrown upwards reaches the bottom of the cliff with a higher velocity X) The rock that was thrown downwards reaches the bottom of the cliff with a higher velocity Y) Both rocks reach the bottom of the cliff with the same velocity at the same time Z) Both rocks reach the bottom of the cliff with the same velocity but at different times
W: W) The rock that was thrown upwards reaches the bottom of the cliff with a higher velocity
X: X) The rock that was thrown downwards reaches the bottom of the cliff with a higher velocity
Y: Y) Both rocks reach the bottom of the cliff with the same velocity at the same time
Z: Z) Both rocks reach the bottom of the cliff with the same velocity but at different times
Answer: Z) Z) Both rocks reach the bottom of the cliff with the same velocity but at different times
A mass is spun horizontally at the end of a string. If its speed is changed so that the centripetal force is doubled, in simplest decimal form to the nearest tenth, what is the ratio of final speed to initial speed?
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Which of the following mineral properties is most reliable for identification? W) Color X) Density Y) Cleavage Z) Luster
W: W) Color
X: X) Density
Y: Y) Cleavage
Z: Z) Luster
Answer: Y) Y) Cleavage
In what wavelengths of electromagnetic radiation do greenhouse gases absorb and reradiate energy back to Earth’s surface?
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Which of the following is true of enzymes? W) They increase the activation energy of metabolic reactions X) They have active sites that bind to specific substrate molecules Y) They are made of chitin protein Z) They generally act on a variety of substrate molecules
W: W) They increase the activation energy of metabolic reactions
X: X) They have active sites that bind to specific substrate molecules
Y: Y) They are made of chitin protein
Z: Z) They generally act on a variety of substrate molecules
Answer: X) X) They have active sites that bind to specific substrate molecules
Which of the following branches of science deals with study of the life and phenomena of inland standing waters, especially lakes and ponds? W) Limnology X) Hydrology Y) Ichthyology Z) Ecology
W: W) Limnology
X: X) Hydrology
Y: Y) Ichthyology
Z: Z) Ecology
Answer: W) W) Limnology
Which of the following is NOT a potential source of biogas? W) Landfills X) Sewage treatment plants Y) Automobile engine Z) Animal waste
W: W) Landfills
X: X) Sewage treatment plants
Y: Y) Automobile engine
Z: Z) Animal waste
Answer: Y) Y) Automobile engine
The presence of which of the following traits is required for the creation of all oil traps? W) Anticline X) Syncline Y) Impermeable layer Z) Fault
W: W) Anticline
X: X) Syncline
Y: Y) Impermeable layer
Z: Z) Fault
Answer: Y) Y) Impermeable layer
Which of the following catabolic pathways liberates carbon dioxide? W) Electron transport X) Glycolysis Y) Citric acid cycle Z) Cori cycle
W: W) Electron transport
X: X) Glycolysis
Y: Y) Citric acid cycle
Z: Z) Cori cycle
Answer: Y) Y) Citric acid cycle
If one mole of a substance with a molar mass of 20 is burned at constant pressure and 800 kilojoules of energy is released as heat, what is the standard enthalpy change, in kilojoules, when a 5-gram sample of this substance is burned at constant pressure?
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Providing your answer to one decimal place, find the value of the following fraction: $$\frac{63!}{62!\,3!}$$
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Name all of the quadrants that contain solutions of the inequality 2x – y > 4.
Choices:
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A string 40 centimeters long produces a fundamental frequency of 384 hertz. To produce a note one octave higher, the tension in the string must be increased by which of the following factors? W) 0.7 X) 1.4 Y) 2 Z) 4
W: W) 0.7
X: X) 1.4
Y: Y) 2
Z: Z) 4
Answer: Z) Z) 4
A meter stick is held by a low-friction support on a stand. A single weight and an air-filled balloon hang from the left side of the meter stick; a weight hangs from the right side of the meter stick. The fulcrum is adjusted so that the system is balanced and level. If the string holding the balloon is burned so as to exert no torque when the string breaks, identify by number what will happen when the string breaks: 1) the right side of the meter stick will go down; 2) the left side of the meter stick will go down; or 3) the meter stick will remain balanced.
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Which of the following is produced by gas-to-particle conversion in the atmosphere? W) Primary particulate matter X) Secondary particulate matter Y) Tertiary aerosols Z) Primary aerosols
W: W) Primary particulate matter
X: X) Secondary particulate matter
Y: Y) Tertiary aerosols
Z: Z) Primary aerosols
Answer: X) X) Secondary particulate matter
What are the two most abundant minerals in the continental crust?
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What is the highest level of protein structure present in collagen, a fibrous protein with three discrete helical polypeptides supercoiled into a triple helix?
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Estrogen and progesterone are most directly regulated by which two hormones?
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Which of the following is typically increased in order for electricity to travel long distances through transmission lines? W) Voltage X) Amperage Y) Wattage Z) Current
W: W) Voltage
X: X) Amperage
Y: Y) Wattage
Z: Z) Current
Answer: W) W) Voltage
What type of semi-conducting junction is essential to the functioning of a solar cell?
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Which of the following is an aldehyde? W) C₁₁H₂₀ X) C₅H₁₁OH Y) C₅H₁₁CHO Z) C₅H₁₁NH₂
W: W) C₁₁H₂₀
X: X) C₅H₁₁OH
Y: Y) C₅H₁₁CHO
Z: Z) C₅H₁₁NH₂
Answer: Y) Y) C₅H₁₁CHO
Which one of the following five metals would react the least with dilute hydrochloric acid: 1) lead, 2) chromium, 3) manganese, 4) nickel, 5) gold?
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If the surface area of a cube is 96 square units, which of the following is the length of a diagonal of a face of the cube? W) 4 X) 4√2 Y) 4√3 Z) 16√2
W: W) 4
X: X) 4√2
Y: Y) 4√3
Z: Z) 16√2
Answer: X) X) 4√2
Determine the largest possible real domain of $$y = \frac{\sqrt{x - 1}}{\sqrt{x^2 - 1}}.$$
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If two inductance coils of inductance L are connected in parallel, but are well separated, the equivalent inductance of the system is which of the following? W) 0.5L X) L Y) 2L Z) L²
W: W) 0.5L
X: X) L
Y: Y) 2L
Z: Z) L²
Answer: W) W) 0.5L
Two balls are dropped one second apart from a tall building. Given g = 10 m/s² and neglecting air resistance, what is the approximate distance in meters between the two balls three seconds after the first ball is dropped? W) 20 X) 25 Y) 45 Z) Depends on the masses
W: W) 20
X: X) 25
Y: Y) 45
Z: Z) Depends on the masses
Answer: X) X) 25
Which of the following theories describes the random movement of small particles in the atmosphere? W) Diffusion X) Reynolds number Y) Brownian motion Z) Kinetic
W: W) Diffusion
X: X) Reynolds number
Y: Y) Brownian motion
Z: Z) Kinetic
Answer: Y) Y) Brownian motion
Igneous rocks and magmas are classified into four main compositional groups—ultramafic, mafic, intermediate, and felsic—based on the content of what chemical compound?
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What is the term for the process in which a reptile sheds its outer layer of skin, or an arthropod or crustacean sheds its outer shell?
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The acronym NAD stands for what phrase?
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Cadmium and boron are used in a nuclear reactor to absorb which subatomic particle?
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Which of the elements, used as a nuclear fuel, is most abundant in the Earth's crust? W) Uranium X) Plutonium Y) Thorium Z) Americium
W: W) Uranium
X: X) Plutonium
Y: Y) Thorium
Z: Z) Americium
Answer: Y) Y) Thorium
When hydrogen reacts with 2-butanone, which of the following is the primary product? W) A primary aldehyde X) A secondary aldehyde Y) A primary alcohol Z) A secondary alcohol
W: W) A primary aldehyde
X: X) A secondary aldehyde
Y: Y) A primary alcohol
Z: Z) A secondary alcohol
Answer: Z) Z) A secondary alcohol
Arrange the following three choices in order of increasing number of oxygen atoms: 1) one mole of carbon monoxide; 2) one mole of carbon dioxide; 3) one-half mole of calcium carbonate.
Choices:
Correct Order:
If two 6-sided fair dice are rolled, providing your answer as a fraction in lowest terms, what is the probability that both numbers will be even?
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Mary travels for 110 miles averaging 55 miles per hour and for 150 miles averaging 50 miles per hour. What is Mary’s average speed in miles per hour for the trip?
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White light is incident on a diffraction grating. Which of the following colors will be diffracted through the largest angle? W) Red X) Yellow Y) Blue Z) Green
W: W) Red
X: X) Yellow
Y: Y) Blue
Z: Z) Green
Answer: W) W) Red
A square conducting loop of length L on a side carries a current i. Which of the following best characterizes the magnetic field at the center of the loop? W) Independent of L X) Inversely proportional to L Y) Proportional to L Z) Proportional to L²
W: W) Independent of L
X: X) Inversely proportional to L
Y: Y) Proportional to L
Z: Z) Proportional to L²
Answer: X) X) Inversely proportional to L
Which of the following clockwise currents brings warm Caribbean waters into the Gulf of Mexico before joining the Gulf Stream? W) Caribbean system X) Loop Y) North Equatorial Z) Florida
W: W) Caribbean system
X: X) Loop
Y: Y) North Equatorial
Z: Z) Florida
Answer: X) X) Loop
Which of the following does NOT describe the asthenosphere? W) Region of the lower mantle X) Viscous Y) Mechanically weak and ductile Z) Involved in plate tectonic movements
W: W) Region of the lower mantle
X: X) Viscous
Y: Y) Mechanically weak and ductile
Z: Z) Involved in plate tectonic movements
Answer: W) W) Region of the lower mantle
Who discovered the antibiotic nature of penicillin in 1928?
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Of the following four choices, identify all that are involved in plant primary growth: 1) axillary bud meristem; 2) cork cambium; 3) apical meristem; 4) vascular cambium.
Choices:
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