HS Sample Set 2, Round 1 from NSB
Stomata are pores in leaves that allow gas exchange. What is the name of the structure with this function that is present in twigs, stems, bark, and fruit?
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Identify all of the following four choices that are typically K strategist life history characteristics: 1) Type III survivorship curve; 2) density dependent mortality; 3) large body size; 4) rapid embryonic development.
Choices:
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Which of the following species would be expected to have the most covalent character? W) Beryllium fluoride X) Magnesium chloride Y) Aluminum oxide Z) Silver bromide
W: W) Beryllium fluoride
X: X) Magnesium chloride
Y: Y) Aluminum oxide
Z: Z) Silver bromide
Answer: W) W) Beryllium fluoride
Under which of the following sets of conditions would nitrogen gas deviate the MOST from the ideal gas law? W) 500 Kelvin and 50 atmospheres X) 500 Kelvin and 5 atmospheres Y) 150 Kelvin and 50 atmospheres Z) 150 Kelvin and 5 atmospheres
W: W) 500 Kelvin and 50 atmospheres
X: X) 500 Kelvin and 5 atmospheres
Y: Y) 150 Kelvin and 50 atmospheres
Z: Z) 150 Kelvin and 5 atmospheres
Answer: Y) Y) 150 Kelvin and 50 atmospheres
What is the smallest possible sum of a positive number and its reciprocal?
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Find the point of intersection of $$2x + 3y = -4$$ and $$5x - y = 7$$.
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The escape velocity for a 100 kilogram object to leave planet Earth is approximately 11,000 meters per second. Which of the following is the escape velocity in meters per second for a 200 kilogram object to leave Earth? W) 5,500 X) 11,000 Y) 16,500 Z) 22,000
W: W) 5,500
X: X) 11,000
Y: Y) 16,500
Z: Z) 22,000
Answer: X) X) 11,000
A proton with a charge of $1.6\times10^{-19}\,\mathrm{C}$ is moving with a speed of $2\times10^5\,\mathrm{m/s}$ when it encounters a uniform magnetic field of 2 teslas in a direction perpendicular to the proton’s motion. Providing your answer in scientific notation to two significant figures, what is the magnitude of the force in newtons experienced by the proton?
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In terms of naturally supplied nutrients, which of the following elements is typically least abundant and most limiting to biological productivity in lakes? W) Nitrogen X) Phosphorus Y) Calcium Z) Carbon
W: W) Nitrogen
X: X) Phosphorus
Y: Y) Calcium
Z: Z) Carbon
Answer: X) X) Phosphorus
Which of the following rock types could form from the earthfall material following a mass wasting event? W) Limestone X) Tillite Y) Breccia Z) Schist
W: W) Limestone
X: X) Tillite
Y: Y) Breccia
Z: Z) Schist
Answer: Y) Y) Breccia
If it takes 900 Btus of fuel to produce a gallon of hot water and you take a 10 minute shower using 2 gallons of hot water per minute, how many Btus of fuel were used in the shower?
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Which of the following is closest to the maximum horsepower a healthy person can briefly generate? W) 0.25 X) 0.5 Y) 1 Z) 2
W: W) 0.25
X: X) 0.5
Y: Y) 1
Z: Z) 2
Answer: Y) Y) 1
Which of the following unusual vertebrates was known in the fossil record for over 100 years before a living specimen was discovered? W) Okapi X) Coelacanth Y) Pangolin Z) Seven gilled shark
W: W) Okapi
X: X) Coelacanth
Y: Y) Pangolin
Z: Z) Seven gilled shark
Answer: X) X) Coelacanth
While chilling with your favorite tunes, the parasympathetic division of your autonomic nervous system is driving many of your physiological systems. Indicate all of the following four physiological responses that would be unlikely to occur: 1) widely dilated bronchi; 2) stimulated digestive processes; 3) dry mouth; 4) dilated pupils.
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Infrared spectroscopy typically analyzes which of the following? W) Electronic excitement X) Nuclear spins Y) Molecular vibrations Z) Atomic rotation
W: W) Electronic excitement
X: X) Nuclear spins
Y: Y) Molecular vibrations
Z: Z) Atomic rotation
Answer: Y) Y) Molecular vibrations
What is the oxidation number of the central cobalt atom in $\mathrm{[Co(NH_3)_4Cl_2]^+}$?
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If $$f(t)=3t+1$$, what is $$\lim_{t\to2}f(t)$$?
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Find the ratio of $$x$$ to $$y$$ if $$\displaystyle\frac{x - y}{x + y} = \frac{2}{3}$$.
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A planet is found with a mass that is 50 times the mass of Earth and a radius that is 5 times that of the Earth. Providing your answer to the nearest integer, what is the acceleration due to gravity in meters per second squared on this planet, given that the acceleration due to gravity on Earth is 9.8 m/s²?
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In the de Broglie equation, Planck’s constant relates which two properties of a particle?
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In the early part of the 20th century, the German geologist and meteorologist Alfred Wegener introduced what theory?
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Which of the following materials is most commonly associated with schistosity? W) Amphibolite X) Gneiss Y) Schist Z) Slate
W: W) Amphibolite
X: X) Gneiss
Y: Y) Schist
Z: Z) Slate
Answer: W) W) Amphibolite
A realized ecological niche includes all but which of the following? W) Resource requirements X) Range of tolerance Y) Geographical location Z) Competitors
W: W) Resource requirements
X: X) Range of tolerance
Y: Y) Geographical location
Z: Z) Competitors
Answer: Y) Y) Geographical location
Which of the following organisms starts out as a free-swimming larva and then undergoes a metamorphosis during which its tail, notochord, and most of its nervous system are reabsorbed? W) Sea squirt X) Arrow worm Y) Eel Z) Hellgrammite
W: W) Sea squirt
X: X) Arrow worm
Y: Y) Eel
Z: Z) Hellgrammite
Answer: W) W) Sea squirt
Which of the following does NOT have to contain an oxygen atom single-bonded to at least one carbon atom? W) Ether X) Ester Y) Mercaptan Z) Carboxylic acid
W: W) Ether
X: X) Ester
Y: Y) Mercaptan
Z: Z) Carboxylic acid
Answer: Y) Y) Mercaptan
Which of the following elements is most reactive to water? W) Potassium X) Zinc Y) Palladium Z) Nickel
W: W) Potassium
X: X) Zinc
Y: Y) Palladium
Z: Z) Nickel
Answer: W) W) Potassium
If it takes 12 minutes to cut a log into 4 pieces, how many minutes will it take to cut a log into 3 pieces?
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In simplest form, find the radius of a semi-circle in which is inscribed a square of side 4 units.
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A 10 kilogram object falls to the surface of a planet where the acceleration due to gravity is 6.5 m/s². If the object is falling at terminal velocity, what is the drag force on the object in newtons?
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A 2000 kilogram car moves with a steady speed of 10 m/s up a hill that is inclined 10° above the horizontal. Describe the magnitude and direction of the net force on the car after 10 seconds.
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Give the name of the depressions that are the result of a violent volcanic eruption and within which lakes often form.
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Where in the interstellar medium are stars believed to form? W) Giant molecular clouds X) Warm-hot interstellar medium Y) H I regions Z) H II regions
W: W) Giant molecular clouds
X: X) Warm-hot interstellar medium
Y: Y) H I regions
Z: Z) H II regions
Answer: W) W) Giant molecular clouds
Chlorophyll undergoes which of the following types of reaction when it is activated by light? W) Reduction X) Oxidation Y) Hydrolysis Z) Phosphorylation
W: W) Reduction
X: X) Oxidation
Y: Y) Hydrolysis
Z: Z) Phosphorylation
Answer: X) X) Oxidation
Approximately how many pounds of coal are required to light a 100 watt light bulb for one year? W) 325 X) 450 Y) 575 Z) 700
W: W) 325
X: X) 450
Y: Y) 575
Z: Z) 700
Answer: Z) Z) 700
The development of a streamlined body in a variety of fast swimming animals, including penguins, sharks, and dolphins, is a good example of which of the following evolutionary concepts? W) Coevolution X) Divergent evolution Y) Convergent evolution Z) Founder’s effect
W: W) Coevolution
X: X) Divergent evolution
Y: Y) Convergent evolution
Z: Z) Founder’s effect
Answer: Y) Y) Convergent evolution
Access to desert aquifers has provided a positive feedback stimulus to all but which of the following? W) Human population X) Cattle population Y) Kangaroo rat population Z) Commercial agriculture
W: W) Human population
X: X) Cattle population
Y: Y) Kangaroo rat population
Z: Z) Commercial agriculture
Answer: Y) Y) Kangaroo rat population
A student is titrating an unknown acid with 0.100 M sodium hydroxide. At the end of the experiment, the student calculates the concentration of the acid to be 1.1% higher than the actual value. Which of the following sources of possible experimental error most likely contributed to this final error? W) Not zeroing the balance X) Adding 2 drops of indicator instead of the procedure-stated 3 drops Y) Not reading from the bottom of the meniscus when reading the burette Z) Leaving some water in the receiving Erlenmeyer flask before adding the acid
W: W) Not zeroing the balance
X: X) Adding 2 drops of indicator instead of the procedure-stated 3 drops
Y: Y) Not reading from the bottom of the meniscus when reading the burette
Z: Z) Leaving some water in the receiving Erlenmeyer flask before adding the acid
Answer: Z) Z) Leaving some water in the receiving Erlenmeyer flask before adding the acid
Place the following four molecules in order from strongest to weakest ionic bonding: 1) calcium oxide; 2) cesium iodide; 3) potassium chloride; 4) lithium fluoride.
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Which of the following represents the degree measure of the angle between the circle and the chord for an arc of measure 90°? W) 45° X) 90° Y) 135° Z) 180°
W: W) 45°
X: X) 90°
Y: Y) 135°
Z: Z) 180°
Answer: W) W) 45°
Savannah travels 5 miles in a direction north $30^\circ$ east and then 7 miles in a direction south $60^\circ$ east. In simplest form, how many miles is she from her starting point?
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A 5 kilogram ball is thrown at a wall with a speed of 10 m/s. If the ball rebounds with a speed of 7 m/s, what was the magnitude of the impulse that the ball experienced in kilogram·meters per second?
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An airplane is scheduled to travel to a city that is 100 miles due north of the departure city. If there is a wind that blows from east to west at a steady rate of 100 mph, and the plane travels at a speed of 200 mph in still air, then which of the following directions should the plane be directed? W) $30^\circ$ north of east X) $60^\circ$ north of east Y) $30^\circ$ north of west Z) $60^\circ$ north of west
W: W) $30^\circ$ north of east
X: X) $60^\circ$ north of east
Y: Y) $30^\circ$ north of west
Z: Z) $60^\circ$ north of west
Answer: X) X) $60^\circ$ north of east
Which of the following map projections has true latitude and longitude lines and angles, yet distortion increases near the map’s polar regions? W) Globe X) Mercator Y) Equidistant Z) Robinson
W: W) Globe
X: X) Mercator
Y: Y) Equidistant
Z: Z) Robinson
Answer: X) X) Mercator
Which spectral class of stars has the strongest hydrogen lines?
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Methane’s influence on global warming is approximately how many times that of carbon dioxide? W) 1/2 X) 10 Y) 20 Z) 40
W: W) 1/2
X: X) 10
Y: Y) 20
Z: Z) 40
Answer: Y) Y) 20
About how many pounds of carbon dioxide are generated by burning 6 pounds of pure carbon? W) 22 X) 32 Y) 42 Z) 52
W: W) 22
X: X) 32
Y: Y) 42
Z: Z) 52
Answer: W) W) 22
Which of the following molluscan structures is NOT correctly paired with its function? W) Adductor muscle and closing valves X) Siphon and feeding while buried Y) Radula and reproduction Z) Foot and locomotion
W: W) Adductor muscle and closing valves
X: X) Siphon and feeding while buried
Y: Y) Radula and reproduction
Z: Z) Foot and locomotion
Answer: Y) Y) Radula and reproduction
Which of the following statements is true? W) Prostaglandins are paracrine regulators that act locally X) Insulin is a paracrine regulator that acts over long distances Y) Melatonin is an endocrine hormone that acts locally Z) Prostaglandins are endocrine hormones that act over long distances
W: W) Prostaglandins are paracrine regulators that act locally
X: X) Insulin is a paracrine regulator that acts over long distances
Y: Y) Melatonin is an endocrine hormone that acts locally
Z: Z) Prostaglandins are endocrine hormones that act over long distances
Answer: W) W) Prostaglandins are paracrine regulators that act locally
Jacques Charles is well-known as the inventor of the hot air balloon, and there is also a law that carries his name. Which of the following is a correct postulation, based on Charles’s Law? W) As the gas in a balloon is heated, its mass increases X) As the gas in a balloon is heated, the pressure of the gas outside the balloon decreases Y) As the gas in a balloon is heated, the pressure of the gas outside the balloon increases Z) As the gas in a balloon is cooled, its density increases
W: W) As the gas in a balloon is heated, its mass increases
X: X) As the gas in a balloon is heated, the pressure of the gas outside the balloon decreases
Y: Y) As the gas in a balloon is heated, the pressure of the gas outside the balloon increases
Z: Z) As the gas in a balloon is cooled, its density increases
Answer: Z) Z) As the gas in a balloon is cooled, its density increases
A 10.0 gram sample of gold with a specific heat capacity of 0.1 J/(g·°C) is heated using 100.0 J of energy. If the original temperature of the gold is 25.0 °C, what is its final temperature in degrees Celsius?
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