Sample Set 1 - Round 7

Question 1

PHYSICAL SCIENCE Multiple Choice Which of the following laws most directly limits the
ability of a simple machine to an efficiency of 100% or lower:

W) Hooke’s law
X) law of equal proportions
Y) the first law of motion
Z) the law of conservation of energy

Answer 1

ANSWER: Z) THE LAW OF CONSERVATION OF ENERGY

Question 2

PHYSICAL SCIENCE Short Answer To the first decimal place, what is the ideal mechanical
advantage of a lever with a resistance arm of 200 centimeters and an effort arm of 3.4 meters?

Answer 2

ANSWER: 1.7
(Solution: MA = EA/RA = 340/200 = 1.7)

Question 3

EARTH SCIENCE Multiple Choice Which of the following characteristics is most commonly
associated with a tsunami wave as opposed to a normal ocean wave in the open ocean:

W) period of 5 seconds
X) wavelength of 300 miles
Y) speed of 50 miles per hour
Z) motion of only the uppermost layer of water

Answer 3

ANSWER: X) WAVELENGTH OF 300 MILES

Question 4

EARTH SCIENCE Multiple Choice Which of the following is a true tidal wave:
W) tsunami
X) tidal bore
Y) rip current
Z) tidal range

Answer 4

ANSWER: X) TIDAL BORE

Question 5

MATH Short Answer Divide x
^5 by x^3 and simplify:

Answer 5

ANSWER: x
^2

Question 6

MATH Short Answer Evaluate the following and give your answer as a mixed fraction in lowest
terms: 9.5-5.4

Answer 6

ANSWER: 4 and 1/10

Question 7

GENERAL SCIENCE Multiple Choice Which of the following does the prefix endo (spell out
the letters e, n, d, o) mean, as in the word endoscope:
W) under
X) dark
Y) inside
Z) invisible

Answer 7

ANSWER: Y) INSIDE

Question 8

GENERAL SCIENCE Short Answer Arrange the following 3 choices in order of INCREASING
speed: 3 feet per minute; 5 yards per minute; 30 yards per hour

Answer 8

30 YARDS PER HOUR; 3 FEET PER MINUTE; 5 YARDS PER MINUTE

Question 9

LIFE SCIENCE Multiple Choice Which of the following anatomical structures do sharks NOT
possess:
W) gill covers or opercula
X) lateral lines
Y) cartilaginous skeletons
Z) livers

Answer 9

W) GILL COVERS OR OPERCULA

Question 10

LIFE SCIENCE Short Answer What scientist is sometimes considered the father of genetics
because of his extensive studies on the patterns of inheritance?

Answer 10

GREGOR MENDEL (ACCEPT: MENDEL)

Question 11

PHYSICAL SCIENCE Multiple Choice What is the mass of an electron:
W) about the same as a proton
X) about ½ as much as a proton
Y) about 1/1,800th of a proton
Z) electrons have no mass

Answer 11

ANSWER: Y) ABOUT 1/1,800TH OF A PROTON

Question 12

PHYSICAL SCIENCE Short Answer A 10,000-newton car is on the top floor of a parking
garage 25 meters above the ground. Relative to the ground, what is the gravitational potential
energy, in joules, of the car?

Answer 12

ANSWER: 250,000 (ACCEPT: 2.5 × 105
)
(Solution: PS = 10,000 N × 25 m = 250,000 J)

Question 13

EARTH SCIENCE Multiple Choice Streams running off the terminus of glaciers have a high
bed load and easily erodible banks, typically forming which of the following types of stream
patterns:
W) meandering
X) oxbow
Y) braided
Z) back swamp

Answer 13

ANSWER: X) BRAIDED

Question 14

EARTH SCIENCE Multiple Choice Which of the following is similar to a delta but forms when
a steep mountain stream spreads out from a mountain canyon onto a flat, broad valley:

W) alluvial fan
X) levee
Y) playa
Z) flood plain

Answer 14

ANSWER: W) ALLUVIAL FAN

Question 15

MATH Short Answer Solve the following equation for x: 15x + 8x – 3x = 120

Answer 15

ANSWER: 6

Question 16

Short Answer Divide
9/5 by 5/3 and give your answer as a proper fraction in lowest terms:

Answer 16

ANSWER: 25/27

Question 17

GENERAL SCIENCE Multiple Choice Which of the following BEST describes the SI unit
called the Newton:
W) a unit of power
X) a unit of force
Y) a unit of work
Z) a unit of energy

Answer 17

ANSWER: X) A UNIT OF FORCE

Question 18

GENERAL SCIENCE Short Answer Rounded to the nearest whole number, how many meters
per second is equal to 40 kilometers per hour?

Answer 18

ANSWER: 11

Question 19

LIFE SCIENCE Short Answer How many phalanges are in a human thumb?

Answer 19

ANSWER: 2

Question 20

LIFE SCIENCE Multiple Choice Which of the following terms is most often used to describe a
biochemical reaction where the forward reaction is at the same rate as the reverse reaction:
W) isothermic
X) isotropic
Y) equilibrium
Z) homeotropic

Answer 20

ANSWER: Y) EQUILIBRIUM

Question 21

PHYSICAL SCIENCE Multiple Choice Alkali metals all have the same:
W) number of electrons in their outer shells
X) atomic radii
Y) electronegativities
Z) melting points

Answer 21

ANSWER: W) NUMBER OF ELECTRONS IN THEIR OUTER SHELLS

Question 22

PHYSICAL SCIENCE Multiple Choice Which of the following liquids at room temperature
and 1 atmosphere would have the GREATEST surface tension:
W) distilled water
X) ethanol
Y) methanol
Z) acetone

Answer 22

ANSWER: W) DISTILLED WATER

Question 23

EARTH SCIENCE Multiple Choice Which of the following most likely formed a U-shaped
valley:
W) glacial erosion
X) mountain stream erosion
Y) wind erosion
Z) deforestation

Answer 23

ANSWER: W) GLACIAL EROSION

Question 24

EARTH SCIENCE Multiple Choice Which of the following gives glacial meltwater a quality
which is commonly described as glacial milk:
W) ice crystals in the water
X) the abundance of trapped air
Y) large amounts of suspended material
Z) the abundance of cyanobacteria

Answer 24

ANSWER: Y) LARGE AMOUNTS OF SUSPENDED MATERIAL

Question 25

MATH Short Answer Name all of the following 3 statements which are always TRUE: 1) a square is a regular polygon 2) an equilateral triangle is equiangular 3) a scalene triangle has 2 sides of equal length

Answer 25

ANSWER: 1 AND 2

Question 26

MATH Multiple Choice Which of the following is evenly divisible by each of the counting numbers 1 through 8: W) 360 X) 1,250 Y) 1,800 Z) 2,520

Answer 26

ANSWER: Z) 2,520

Question 27

GENERAL SCIENCE Multiple Choice Which of the following instruments consists of a weighted glass tube or bulb, which is floated in a liquid to measure the liquid’s relative density: W) hydrometer X) hypsometer Y) densitometer Z) sensometer

Answer 27

ANSWER: W) HYDROMETER

Question 28

GENERAL SCIENCE Short Answer Identify each of the following 3 materials as derived from a plant or animal source, respectively: lanolin; silk; jute

Answer 28

ANSWER: LANOLIN = ANIMAL; SILK = ANIMAL; JUTE = PLANT

Question 29

LIFE SCIENCE Multiple Choice In which of the following areas of the human body is the frontal bone found: W) pelvis X) spine Y) shoulder Z) head

Answer 29

ANSWER: Z) HEAD

Question 30

LIFE SCIENCE Multiple Choice In which of the following areas of the human body is the ileum bone found: W) pelvis X) wrist Y) shoulder Z) head

Answer 30

ANSWER: W) PELVIS

Question 31

PHYSICAL SCIENCE Multiple Choice Which of the following chemical formulas gives an indication of the arrangement of atoms and bonds in a chemical compound: W) empirical X) molecular Y) structural Z) polyatomic

Answer 31

ANSWER: Y) STRUCTURAL

Question 32

PHYSICAL SCIENCE Short Answer How many total atoms are in any one molecule of Epsom salts, or MgSO4*7H2O (read as: Mg, S, O, 4, dot, 7, H, 2, O)

Answer 32

ANSWER: 27

Question 33

EARTH SCIENCE Multiple Choice Which of the following is made of microcrystalline quartz and is very hard and compact: W) gypsum X) chalk Y) limestone Z) chert

Answer 33

ANSWER: Z) CHERT

Question 34

EARTH SCIENCE Multiple Choice Which of the following is NOT true of geodes: W) they occur in sedimentary and certain volcanic rocks X) they look like ordinary rocks from the outside Y) their exterior is typically made up of limestone Z) they are not found in the U.S.

Answer 34

ANSWER: Z) THEY ARE NOT FOUND IN THE U.S.

Question 35

MATH Short Answer Give the numerical value of 8 factorial divided by 8 factorial:

Answer 35

ANSWER: 1

Question 36

MATH Short Answer Evaluate the following expression: 10 + [8 + (2 – 10)] (read as: 10 plus, open bracket, 8 plus, open parenthesis, 2 minus 10, close parenthesis, close bracket)

Answer 36

ANSWER: 10

Question 37

GENERAL SCIENCE Multiple Choice Which of the following is the study of bees: W) herpetology X) apiology Y) ichthyology Z) ornithology

Answer 37

ANSWER: X) APIOLOGY

Question 38

GENERAL SCIENCE Multiple Choice Which of the following is CLOSEST to the height, in meters, of a person who is 4 feet and 11 inches tall: W) 1.2 X) 1.5 Y) 1.8 Z) 2.2

Answer 38

ANSWER: X) 1.5 (Solution: (59 in)(2.54 cm/in)(1 m/100 cm) = 1.49 m)

Question 39

LIFE SCIENCE Short Answer In what organelle do parenchymal (read as: PAR-en-KYM-al) cells store most of a plant’s cellular fluid?

Answer 39

ANSWER: VACUOLE

Question 40

LIFE SCIENCE Short Answer Name all of the following 3 groups of plants that have no xylem: mosses; ferns; conifers

Answer 40

ANSWER: MOSSES

Question 41

PHYSICAL SCIENCE Multiple Choice Which of the following is generally NOT true: W) the boiling point of water decreases with increased altitude on Earth X) the melting point of table salt is much higher than that of glucose Y) radon is radioactive Z) metals react with nonmetals to form new metals

Answer 41

ANSWER: Z) METALS REACT WITH NONMETALS TO FORM NEW METALS

Question 42

PHYSICAL SCIENCE Short Answer What is the percent efficiency, rounded to the nearest whole number, of a simple machine that requires 600 joules of energy input to achieve 400 joules of energy output?

Answer 42

ANSWER: 67 (Solution: 400/600 = 0.67 × 100 = 67%)

Question 43

EARTH SCIENCE Multiple Choice Which of the following most likely made the trip from Europe to the New World possible for early sailors: W) the westerlies X) the trade winds Y) the doldrums Z) the jet stream

Answer 43

ANSWER: X) THE TRADE WINDS

Question 44

EARTH SCIENCE Multiple Choice Which of the following is a dark gray, low cloud associated with continuous falling rain: W) altocumulus X) stratocumulus Y) cumulus humilis Z) nimbostratus

Answer 44

ANSWER: Z) NIMBOSTRATUS

Question 45

MATH Short Answer Evaluate y/x when x = 0 and y = –8:

Answer 45

ANSWER: 0

Question 46

MATH Short Answer Jill has $2.25 consisting of U.S. dimes and quarters. If she has 5 more dimes than quarters, how many dimes and quarters, respectively, does she have?

Answer 46

ANSWER: DIMES = 10; QUARTERS = 5

Question 47

GENERAL SCIENCE Short Answer What is the common term for the most accepted theory on how the universe came into being?

Answer 47

ANSWER: BIG BANG

Question 48

GENERAL SCIENCE Short Answer What letter is most often used by scientists as a symbol for light or the speed of light?

Answer 48

ANSWER: C

Question 49

LIFE SCIENCE Short Answer What glands of the human body are most responsible for producing what is sometimes called the stress hormone cortisol?

Answer 49

ANSWER: ADRENALS (ACCEPT: ADRENAL CORTEX)

Question 50

LIFE SCIENCE Short Answer Name all of the following 3 choices that are common functions of feathers on birds: thermal insulation; sexual selection; flight

Answer 50

ANSWER: ALL