MS Sample Set 4, Round 4 from NSB
Which element derives its symbol from the Latin word Aurum?
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What is the term for a chemical species having two ionizable hydrogen atoms?
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What are animals that eat other animals known as?
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Sea stars, velvet worms and northern shrike birds – all three are examples of: W) Omnivores X) Detritivores Y) Scavengers Z) Predators
W: W) Omnivores
X: X) Detritivores
Y: Y) Scavengers
Z: Z) Predators
Answer: Z) Z) Predators
Simplify completely the fraction $\displaystyle \frac{23}{11}$.
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If you were to graph the inequality $\displaystyle x< -7$ on a number line, what would it look like? W) It would have an open circle at –7 and a ray extending from –7 on the right to negative infinity on the left X) It would have a closed circle at –7 and a ray extending from –7 on the right to negative infinity on the left Y) It would have an open circle at 7 and a ray extending from 7 on the right to negative infinity on the left Z) It would have open circles at –7 and 7 and be shaded in between them
W: W) It would have an open circle at –7 and a ray extending from –7 on the right to negative infinity on the left
X: X) It would have a closed circle at –7 and a ray extending from –7 on the right to negative infinity on the left
Y: Y) It would have an open circle at 7 and a ray extending from 7 on the right to negative infinity on the left
Z: Z) It would have open circles at –7 and 7 and be shaded in between them
Answer: W) W) It would have an open circle at –7 and a ray extending from –7 on the right to negative infinity on the left
Which of the following resulted in petroleum? W) Meteors that fell from space X) Water combined with sediment deposits Y) Dead organisms packed together for millions of years Z) Saltwater combined with sand
W: W) Meteors that fell from space
X: X) Water combined with sediment deposits
Y: Y) Dead organisms packed together for millions of years
Z: Z) Saltwater combined with sand
Answer: Y) Y) Dead organisms packed together for millions of years
Put the following countries in order from least to greatest current annual oil consumption: Brazil; France; India; China.
Choices:
Correct Order:
Which of the following is NOT characteristic of an atom? W) It is positively charged X) It has electrons Y) It has protons Z) It has a nucleus
W: W) It is positively charged
X: X) It has electrons
Y: Y) It has protons
Z: Z) It has a nucleus
Answer: W) W) It is positively charged
What is the smallest non-divisible unit of a covalent compound?
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How many 4-inch square tiles will be needed to cover a rectangular surface 8 inches by 24 inches?
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How many triangular pieces with side lengths of 3 inches, 4 inches, and 5 inches can be cut from a rectangular sheet measuring 8 inches by 6 inches?
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What is the general name given to a scientist who studies microorganisms?
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A plasmid is a circular DNA molecule that is separate from chromosomal DNA, usually occurring in bacteria. Which of the following do plasmids usually contain? W) Single-stranded DNA X) Cell membrane Y) High osmotic pressure Z) One or two genes
W: W) Single-stranded DNA
X: X) Cell membrane
Y: Y) High osmotic pressure
Z: Z) One or two genes
Answer: Z) Z) One or two genes
Name the form of energy used to transmit and receive signals from radios, cell phones, and televisions.
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What is the main difference between the electromagnetic waves used by a radio and those used by a cell phone?
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Lake Vostok, thought to be a good analogue for an under-ice ocean environment on Europa, can be found underneath glacial ice on which continent?
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Approximately what percent of Earth’s water is in the form of ice? W) 1.6 % X) 6.6 % Y) 11.6 % Z) 16.6 %
W: W) 1.6 %
X: X) 6.6 %
Y: Y) 11.6 %
Z: Z) 16.6 %
Answer: W) W) 1.6 %
A spool of ribbon has 500 yards of ribbon. If one fancy bow takes 1.3 yards of continuous ribbon, how many bows can you make from one spool? W) 46 X) 384 Y) 462 Z) 650
W: W) 46
X: X) 384
Y: Y) 462
Z: Z) 650
Answer: X) X) 384
If $x + y = 5$ and $3x - 4y = 15$, solve for $x$ and $y$.
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Rabbits eat grass and foxes eat rabbits. What role do foxes play in the food chain? W) Primary producer X) Primary consumer Y) Secondary consumer Z) Tertiary consumer
W: W) Primary producer
X: X) Primary consumer
Y: Y) Secondary consumer
Z: Z) Tertiary consumer
Answer: Y) Y) Secondary consumer
In a given ecosystem, there are 1 million kilojoules of energy contained in the primary producer biomass. How much energy is available, in kilojoules, to secondary consumers if primary consumers are 10 % efficient at converting energy to biomass?
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Mike’s bill for texting last month was \$10. This month it was \$15. What was the percentage increase in the bill?
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Ira puts 20 % of his paycheck in savings. If his check is \$60 per week, how much money will he save in four weeks?
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The Mohorovičić discontinuity defines a contrast in seismic velocity that is widely accepted to be the boundary between the mantle and what layer?
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The Earth's core is believed to be composed primarily of what element?
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Gary and Paul were conducting a science experiment to determine how far an egg could drop before it broke. Gary tested 20 total eggs: 4 cracked at 2 feet, 6 cracked at 3 feet, and the rest did not break after dropping. The data that he collected represents which of the following parts of the scientific method? W) Results X) Conclusions Y) Hypothesis Z) Variables
W: W) Results
X: X) Conclusions
Y: Y) Hypothesis
Z: Z) Variables
Answer: W) W) Results
The intersection between the femur and the hipbone can be described as what kind of joint?
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Due to the construction of the Hoover Dam, the delta of what river has been affected by changes in water flow?
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What are the ecosystems called that are located around rivers and streams, linking water to dry land?
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Which of the following compounds is most soluble in water of 25 °C at 1 atm of pressure? W) Aluminum chloride X) Zinc oxide Y) Magnesium phosphate Z) Calcium oxide
W: W) Aluminum chloride
X: X) Zinc oxide
Y: Y) Magnesium phosphate
Z: Z) Calcium oxide
Answer: W) W) Aluminum chloride
For solid and liquid solutes, changes in pressure have practically no effect on solubility. For gaseous solutes, what happens to solubility with an increase in pressure?
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What body organ destroys and recycles old and damaged red blood cells?
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Name the enzyme present in saliva that is responsible for breaking down starches into sugars.
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Which of the following is NOT part of a prokaryotic cell? W) Cell membrane X) Cell wall Y) Nucleus Z) Cytoplasm
W: W) Cell membrane
X: X) Cell wall
Y: Y) Nucleus
Z: Z) Cytoplasm
Answer: Y) Y) Nucleus
ATP is commonly called the energy molecule of the cell. Where in the cell would you find ATP made by substrate phosphorylation? W) Cell membrane X) Cytoplasm Y) Mitochondria Z) Vesicle
W: W) Cell membrane
X: X) Cytoplasm
Y: Y) Mitochondria
Z: Z) Vesicle
Answer: X) X) Cytoplasm
Which of the following oceanic currents prevents the climate of Northern Europe from being much colder? W) Circumpolar Current X) Kuroshio Current Y) North Pacific Current Z) Gulf Stream
W: W) Circumpolar Current
X: X) Kuroshio Current
Y: Y) North Pacific Current
Z: Z) Gulf Stream
Answer: Z) Z) Gulf Stream
Which of the following statements is NOT true about weather or climate? W) The term weather is used to describe atmospheric conditions over a short period of time in a particular area X) Climate is the average weather pattern over many years in a particular area Y) Climate causes weather Z) Climate variability can be related to periodic changes such as El Niño or La Niña
W: W) The term weather is used to describe atmospheric conditions over a short period of time in a particular area
X: X) Climate is the average weather pattern over many years in a particular area
Y: Y) Climate causes weather
Z: Z) Climate variability can be related to periodic changes such as El Niño or La Niña
Answer: Y) Y) Climate causes weather
What is the vertical distance from the undisturbed position of the medium to the top of a crest of a wave called?
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Which of the following types of radiation has the shortest wavelength? W) Gamma rays X) X-rays Y) Infrared radiation Z) Ultraviolet radiation
W: W) Gamma rays
X: X) X-rays
Y: Y) Infrared radiation
Z: Z) Ultraviolet radiation
Answer: W) W) Gamma rays
What is the approximate minimum temperature difference in degrees Celsius required between deep and shallow waters for an Ocean Thermal Energy Conversion (OTEC) system to be commercially viable? W) 5 X) — Y) 0 Z) 50
W: W) 5
X: X) —
Y: Y) 0
Z: Z) 50
Answer: Y) Y) 0
About what percentage of efficiency can an OTEC system currently achieve? W) 1 % X) 3 % Y) 10 % Z) 20 %
W: W) 1 %
X: X) 3 %
Y: Y) 10 %
Z: Z) 20 %
Answer: X) X) 3 %
What is the force that determines the shape of planets, stars, and the Solar System?
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Which two features determine the force of gravity between two planets? W) Their masses and distance apart X) Their atmospheric compositions and masses Y) Their rotational motions and shapes Z) Their masses and shapes
W: W) Their masses and distance apart
X: X) Their atmospheric compositions and masses
Y: Y) Their rotational motions and shapes
Z: Z) Their masses and shapes
Answer: W) W) Their masses and distance apart
Although snowflakes can have many forms, generally, snow crystals have what basic shape?
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Of the following choices, which one best describes the way snowflakes form? W) Raindrops freeze X) Water vapor freezes onto ice crystals inside clouds Y) Ice attaches to dust particles in the air Z) Sleet freezes
W: W) Raindrops freeze
X: X) Water vapor freezes onto ice crystals inside clouds
Y: Y) Ice attaches to dust particles in the air
Z: Z) Sleet freezes
Answer: X) X) Water vapor freezes onto ice crystals inside clouds
Which of the following is true about the Moon? W) It crosses our sky along the same path every night X) It always rises in the west Y) It changes size in our sky as it passes from horizon to zenith to the other horizon Z) It gives off no light of its own
W: W) It crosses our sky along the same path every night
X: X) It always rises in the west
Y: Y) It changes size in our sky as it passes from horizon to zenith to the other horizon
Z: Z) It gives off no light of its own
Answer: Z) Z) It gives off no light of its own
A large portion of the bottom of the Great Salt Lake is covered by smooth, soft and rounded sand, often used in home aquaria. What kind of sand is it?
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How many modes does the following list of seven numbers have: 1, 4, 4, 7, 8, 14, 14?
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If you have a data set of the following seven values: 1, 2, 547, 550, 560, 580, 540, what is the name given to values such as 1 and 2?
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