HS Sample Set 10, Round 4 from NSB
Which of the following geologic eons lasted the longest? W) Hadean X) Archean Y) Proterozoic Z) Phanerozoic
W: W) Hadean
X: X) Archean
Y: Y) Proterozoic
Z: Z) Phanerozoic
Answer: Y) Y) Proterozoic
Identify all of the following three factors that threaten California’s water supplies: 1) Slow reservoir recharge rates; 2) High agricultural water consumption; 3) Strike-slip faults intersecting major aqueducts.
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In what organ are dietary fats primarily absorbed? W) Small intestine X) Large intestine Y) Stomach Z) Liver
W: W) Small intestine
X: X) Large intestine
Y: Y) Stomach
Z: Z) Liver
Answer: W) W) Small intestine
Sepals, petals, and which of the following provide the most complete description for the floral parts that could be found in a single flower of a monoecious plant species? W) Stamens and carpels X) Filaments Y) Carpels Z) Pistils
W: W) Stamens and carpels
X: X) Filaments
Y: Y) Carpels
Z: Z) Pistils
Answer: Z) Z) Pistils
O₂ and O₃ are considered what type of molecules? W) Allotropes X) Structural isomers Y) Isotopes Z) Geometrical isomers
W: W) Allotropes
X: X) Structural isomers
Y: Y) Isotopes
Z: Z) Geometrical isomers
Answer: W) W) Allotropes
If we assume that the bond order in carbon monoxide is three, which of the following correctly gives the formal charges on carbon and oxygen? W) 0 on both carbon and oxygen X) +1 on carbon and –1 on oxygen Y) –1 on carbon and +1 on oxygen Z) +2 on carbon and –2 on oxygen
W: W) 0 on both carbon and oxygen
X: X) +1 on carbon and –1 on oxygen
Y: Y) –1 on carbon and +1 on oxygen
Z: Z) +2 on carbon and –2 on oxygen
Answer: Y) Y) –1 on carbon and +1 on oxygen
Order the following three lightbulb technologies from least to most efficient: 1) Light-emitting diode; 2) Incandescent; 3) Compact fluorescent.
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Coal gas was largely used for municipal lighting and heating before it was supplanted by what fuel source?
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A rock on the end of a string is being swung in a circle above a child's head. The string breaks. Neglecting gravity, in what direction does the acceleration of the rock now point? W) Tangent to the circle X) Inwards towards the center of the circle Y) Outwards away from the center of the circle Z) The acceleration is now zero
W: W) Tangent to the circle
X: X) Inwards towards the center of the circle
Y: Y) Outwards away from the center of the circle
Z: Z) The acceleration is now zero
Answer: Z) Z) The acceleration is now zero
What is the most malleable element at STP?
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What is the midpoint of the segment with endpoints (1, 6) and (5, –2)?
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Solve the following system of two equations in two unknowns: $x^2 + y^2 = 2$ and $x + y = 2$.
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Light traveling in a vacuum hits a refractive material at an angle of 60° from the normal. If it travels through the material at an angle of 30° from the normal, which of the following is the refractive index of the material? W) $\sqrt{3}/2$ X) $\sqrt{3}$ Y) 2 Z) $2\sqrt{2}$
W: W) $\sqrt{3}/2$
X: X) $\sqrt{3}$
Y: Y) 2
Z: Z) $2\sqrt{2}$
Answer: X) X) $\sqrt{3}$
How many lumens does an isotropic source of 1 candela emit into the upper half plane?
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Part of the reason that graphene demonstrates such high mechanical strength is that the carbon atoms are in what hybridization state?
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Order the following three gases from slowest to fastest in terms of their rate of effusion at 25 °C: 1) Helium; 2) Argon; 3) Neon.
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Correct Order:
Specifying whether your answer is open or closed, what is the interval of angles in degrees whose terminal sides are in the second quadrant?
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Which of the following base 2 sums is the largest? W) 1 + 1111 X) 100 + 1001 Y) 110 + 1000 Z) 111 + 111
W: W) 1 + 1111
X: X) 100 + 1001
Y: Y) 110 + 1000
Z: Z) 111 + 111
Answer: W) W) 1 + 1111
Which of the following is NOT an advantage of green roofs? W) Improved waterproofing X) Improved lifespan of roof Y) Reduced heating costs Z) Reduced cooling costs
W: W) Improved waterproofing
X: X) Improved lifespan of roof
Y: Y) Reduced heating costs
Z: Z) Reduced cooling costs
Answer: W) W) Improved waterproofing
Which of the following is NOT a desirable quality in the material used to coat nuclear fuel rods? W) Corrosion resistant X) High neutron absorption Y) High hardness Z) Low reactivity to water
W: W) Corrosion resistant
X: X) High neutron absorption
Y: Y) High hardness
Z: Z) Low reactivity to water
Answer: X) X) High neutron absorption
Which of the following structures is referred to as our body’s internal gyroscope? W) Inner ears X) Eyes Y) Outer ears Z) Nose
W: W) Inner ears
X: X) Eyes
Y: Y) Outer ears
Z: Z) Nose
Answer: W) W) Inner ears
Heartwood and sapwood consist of which of the following? W) Bark X) Secondary xylem Y) Periderm Z) Secondary phloem
W: W) Bark
X: X) Secondary xylem
Y: Y) Periderm
Z: Z) Secondary phloem
Answer: X) X) Secondary xylem
Which of the following best describes the relationship between the ages of the Earth, the Sun, and the Universe? W) The Universe is about 3 times as old as the Sun, which is about 3 times as old as the Earth X) The Universe is the same age as the Sun, which is about 3 times as old as the Earth Y) The Universe is about 3 times as old as the Sun and the Earth, which are the same age Z) The Universe, the Earth, and the Sun are all the same age
W: W) The Universe is about 3 times as old as the Sun, which is about 3 times as old as the Earth
X: X) The Universe is the same age as the Sun, which is about 3 times as old as the Earth
Y: Y) The Universe is about 3 times as old as the Sun and the Earth, which are the same age
Z: Z) The Universe, the Earth, and the Sun are all the same age
Answer: Y) Y) The Universe is about 3 times as old as the Sun and the Earth, which are the same age
You are in a Northern Hemisphere region experiencing zonal air flow with a low pressure system to your north. Which direction would you need to face if you wanted to place your back to the oncoming wind?
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What material typically constitutes the cell wall in fungi? W) Cellulose X) Peptidoglycan Y) Pectin Z) Chitin
W: W) Cellulose
X: X) Peptidoglycan
Y: Y) Pectin
Z: Z) Chitin
Answer: Z) Z) Chitin
Which of the following is NOT an example of a stone fruit? W) Almond X) Coconut Y) Cherry Z) Apple
W: W) Almond
X: X) Coconut
Y: Y) Cherry
Z: Z) Apple
Answer: Z) Z) Apple
Which of the following is the equivalent resistance, in ohms, of a circuit in which a 5 ohm resistor is connected in series to two 4 ohm resistors which are connected in parallel? W) 10/7 X) 40/13 Y) 7 Z) 13
W: W) 10/7
X: X) 40/13
Y: Y) 7
Z: Z) 13
Answer: Y) Y) 7
A man drops a 10 kilogram rock from the top of a building of height 180 meters. If you assume the acceleration due to gravity is 10 m/s², what is the speed, in meters per second, of the rock just before it hits the ground?
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What is the nearest galaxy cluster?
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Which of the following is most directly associated with Andean-type plate margins? W) Volcanic arcs X) Extensional faulting Y) Rift valleys Z) Hot spot activity
W: W) Volcanic arcs
X: X) Extensional faulting
Y: Y) Rift valleys
Z: Z) Hot spot activity
Answer: W) W) Volcanic arcs
What is $$\lim_{x\to3} \frac{x - 3}{x^2 - 9}$$?
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Special water for a 600-liter aquarium is only sold in 35-liter containers. What is the minimum number of these 35-liter containers you would need to buy to be able to completely fill the tank?
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The bond angle in NH₃ is closest to which of the following degree values? W) 90 X) 110 Y) 120 Z) 180
W: W) 90
X: X) 110
Y: Y) 120
Z: Z) 180
Answer: X) X) 110
d orbitals can overlap to form sigma, pi, or delta bonds. Which of these types of d–d bonds is strongest? W) Sigma X) Pi Y) Delta Z) They are equally strong
W: W) Sigma
X: X) Pi
Y: Y) Delta
Z: Z) They are equally strong
Answer: W) W) Sigma
The Athabasca oil sands, the largest bitumen deposit in the world, are located in what country?
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Syngas, produced from coal gasification, is made up primarily of what two gases?
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Given $f(x)=3x-5$ and $g(x)=4x$, what is $f(g(x))$?
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What is the least common multiple of the first four composite numbers?
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An atom is sp³ hybridized. Which of the following is NOT a possible molecular geometry about this atom? W) Bent X) Trigonal pyramidal Y) Tetrahedral Z) Trigonal bipyramidal
W: W) Bent
X: X) Trigonal pyramidal
Y: Y) Tetrahedral
Z: Z) Trigonal bipyramidal
Answer: Z) Z) Trigonal bipyramidal
What region of the electromagnetic spectrum would be able to excite an electron from a 1s orbital to a 2p orbital in a helium atom?
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Which of the following describes antibody-dependent cell-mediated cytotoxicity? W) An invertebrate host defense mechanism X) Achieved via the classical complement pathway Y) Mediated by Fc receptors on NK cells and myeloid leukocytes Z) The primary cytotoxic pathway mediated by T cells
W: W) An invertebrate host defense mechanism
X: X) Achieved via the classical complement pathway
Y: Y) Mediated by Fc receptors on NK cells and myeloid leukocytes
Z: Z) The primary cytotoxic pathway mediated by T cells
Answer: Y) Y) Mediated by Fc receptors on NK cells and myeloid leukocytes
Which of the following is NOT a biogenic amine? W) Dynorphin X) Norepinephrine Y) Dopamine Z) Histamine
W: W) Dynorphin
X: X) Norepinephrine
Y: Y) Dopamine
Z: Z) Histamine
Answer: W) W) Dynorphin
A student at the edge of a merry-go-round travels along an arc of length 6.28 meters as the ride completes a π/4 angular rotation. To the nearest meter, what is the radius of the ride? W) 2 X) 4 Y) 8 Z) 16
W: W) 2
X: X) 4
Y: Y) 8
Z: Z) 16
Answer: Y) Y) 8
An object is placed 10 cm from a thin lens with a focal length of 2 cm. With a negative sign meaning an inverted image, what is the magnification of this system?
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Which of the following phenomena is a buildup of ocean water that is pushed towards land by a hurricane? W) Tsunami X) Surge tide Y) Storm surge Z) Rogue wave
W: W) Tsunami
X: X) Surge tide
Y: Y) Storm surge
Z: Z) Rogue wave
Answer: Y) Y) Storm surge
What element is the second most abundant in the Earth’s crust, but is NOT commonly found on Earth in its elemental form?
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