Sedimentary rocks subjected to melting become
A) lithified.
B) metamorphic rocks.
C) igneous rocks.
D) limestone.
Answer:
An object is thrown vertically into the air. Because of air resistance, the time for its
descent will be
A) longer than the ascent time.
B) shorter than the ascent time.
C) equal to the ascent time.
D) not enough information
Answer:
An important underlying feature of hydraulic devices is the conservation of
A) pressure.
B) momentum.
C) energy.
D) all of the above
E) none of the above
Answer:
When the tiny hole in a pinhole camera is made larger, the image is
A) brighter but less clear.
B) clearer.
C) right-side up.
D) none of the above
Answer:
The unit of resistance is named after
A) Isaac Newton.
B) Benjamin Franklin.
C) Georg Simon Ohm.
D) Micheal Faraday.
E) Charles Coulomb.
Answer:
Using the following generic atom description, choose the correct method for
determining the number of neutrons.
X
A) subtract G from F
B) subtract F from G
C) add F and G
D) divide F by G
E) look it up on the periodic table
Answer:
Galileo’s demonstration at the Leaning Tower of Pisa
A) confirmed Aristotle’s teachings.
B) refuted Aristotle’s teachings.
C) failed in their purpose.
D) none of the above
Answer:
A hydraulic press, like an inclined plane, is capable of increasing energy.
A) sometimes true
B) always false
C) always true
D) sometimes false
Answer:
Bond energies increase in going from C-N (lowest) to C-O to C-F (highest). Explain
this trend based upon the atomic sizes of these atoms as deduced from their positions in
the periodic table.
A) In going from nitrogen to oxygen to fluorine the atoms get larger. This means a
greater nuclear charge, which translates into stronger chemical bonds.
B) In going from nitrogen to oxygen to fluorine the atoms get smaller. This means a
greater nuclear charge, which translates into stronger chemical bonds.
C) In going from nitrogen to oxygen to fluorine the atoms get larger. This means that
the bonding atoms are farther apart, which translates into a greater bond energy.
D) In going from nitrogen to oxygen to fluorine the atoms get smaller. This means that
the bonding atoms are closer together, which translates into a greater bond energy.
Answer:
A surface of erosion between rocks that represents a gap in Earth history is
A) called a dike.
B) an unconformity.
C) a faunal conformity.
D) none of the above
Answer:
The Cenozoic era represents a period of
A) almost continuous tectonic activity.
B) relative tectonic stability.
C) worldwide tropical climates.
D) great diversification of fish species.
Answer:
Which of the following is not a property of metal?
A) does not conduct heat well
B) conducts electricity
C) is shiny
D) is strong, but can be bent
E) All of the above are properties of metals.
Answer:
In a sedimentary rock, small rounded particles indicate a
A) long distance and long travel time.
B) short distance and short travel time.
C) long distance and short travel time.
D) short distance and long travel time.
Answer:
Padded dashboards in cars are safer in an accident than non-padded ones because a
person hitting the dash has
A) increased time of contact.
B) decreased contact force.
C) both of these
D) neither of these
Answer:
When the magnetic field of Earth is reversed,
A) Earth flips over in its orbit.
B) Earth’s rotation is also reversed.
C) newly formed mineral grains on the ocean floor are magnetized according to the new
orientation of the magnetic field.
Answer:
Consider the various frequencies of the three photons emitted from the following three
individual electron transitions in the figure below: n=3 to n=2; n=2 to n=1; n=3 to n=1.
These transitions would produce three spectral lines in a spectroscope. If the energy
spacing between the levels were equal, would this affect the number of spectral lines?
A) Yes, two otherwise separate lines would converge into a single more intense line.
B) No, but the spacing between the spectral lines would change.
C) Yes, two otherwise separate lines would converge into a single less intense line.
D) No, but some would then require a prism in order to be seen.
Answer:
Which chemical family is composed almost entirely of man-made elements?
A) the actinides
B) the lanthanides
C) the halogens
D) all of the above
E) none of the above
Answer:
To catch a fast-moving softball with your bare hand, you extend your hand forward just
before the catch and then let the ball ride backward with your hand. Doing this reduces
the catching force because the
A) relative velocity is less.
B) relative velocity is more.
C) time of catch is increased.
D) time of the catch is decreased.
E) none of the above
Answer:
The formation of the early Appalachian Mountains began as a result of tectonic activity
during the
A) Paleozoic era.
B) Triassic era.
C) Mesozoic era.
D) Cenozoic era.
Answer:
Technically, its not mass that causes the curvature of spacetime, but
A) mass density.
B) energy density.
C) thermal mass.
D) thermal mass fluctuations.
Answer:
How many molecules of sucrose are in a 0.5 moles of sucrose?
A) 3.01 1023 molecules of sucrose
B) 6.02 1023 molecules of sucrose
C) 12.04 1023 molecules of sucrose
D) 0.5
E) 1 gram
Answer:
What is the main difference between a dipole-dipole interaction and a dipole-induced
dipole interaction?
A) Both are similar, but one involves a temporary dipole created by a permanent dipole.
B) Dipole-dipole interactions are weaker because the dipoles are permanent.
C) Dipole-induced dipole interactions are stronger because the induced dipoles can be
formed at any time.
D) Both are identical.
E) none of the above
Answer:
As you read these words, the Sun is
A) gaining mass.
B) losing mass.
C) neither gaining nor losing mass.
D) None of the above.
Answer:
The most common carbonate rock is
A) dolomite.
B) calcite.
C) halite.
D) limestone.
Answer:
If sunlight were green instead of white, the most comfortable color to wear on a cold
day would be
A) magenta.
B) yellow.
C) green.
D) blue.
E) violet.
Answer:
Which is greater: 1.01 amu of hydrogen or 1.01 grams of hydrogen?
A) 1.01 amu of hydrogen is greater than 1.01 grams of hydrogen.
B) 1.01 grams of hydrogen is greater than 1.01 amu of hydrogen.
C) 1.01 grams of hydrogen and 1.01 amu of hydrogen have the same mass.
D) Not enough information information is provided.
Answer:
As you comb your hair, electrons are rubbed onto the comb, which becomes
A) negatively charged.
B) positively charged.
C) ionized.
Answer:
Which of the following molecules would probably be isolated closest to the top of a
fractionating tower at a refinery?
A) C4H10
B) C8H18
C) C10H22
D) C20H42
E) C40H82
Answer:
A machine puts out 100 W of power for every 1000 W put into it. The efficiency of the
machine is
A) 10%.
B) 50%.
C) 90%.
D) 110%.
E) none of the above
Answer:
The following set of redox reactions takes place as shown.
Container A Container B
Fe→ Fe+2 + 2e- Cu+2 + 2e- → Cu
If you had two containers filled with the ion solution described above with only a wire
connecting a piece of iron (in container A) and a piece of copper (in container B),
describe what happens.
A) A little bit of iron is converted into iron ions and a little bit of copper ion is
converted into copper metal.
B) All of the iron is transformed into iron ions and all of the copper is transformed into
copper ions.
C) All of the iron is transformed into iron ions and all of the copper ions are
transformed into copper metal.
D) All of the iron ions are transformed into iron metal and all of the copper is
transformed into copper ions.
E) All of the iron ions are transformed into iron metal and all of the copper is
transformed into copper metal.
Answer:
The copolymer styrene-butadiene rubber (SBR), shown below, is used for making tires
as well as bubble gum. Is it an addition polymer or a condensation polymer?
A) SBR is an addition polymer.
B) SBR is an condensation polymer.
C) SBR is neither an addition nor a condensation polymer.
D) SBR is both an addition and a condensation polymer.
Answer:
Inertia is defined as a
A) force.
B) property of matter.
C) change in motion.
D) none of the above
Answer:
Why might the following nuclear reaction not be very good for energy production in a
fission reactor?
U → Ba + Kr + 1 neutron
A) The material only produces one neutron so the chain reaction will not be very
efficient.
B) The products are too large.
C) There are too many products produced.
D) The mass of the byproducts is too high and therefore the energy released will not be
high enough.
E) Interatomic attraction between the products will impede the efficient separation of
the atoms from the unstable nuclei.
Answer:
The birth of a thunderstorm occurs when
A) warm, humid air rises in a stable environment.
B) warm, humid air rises in an unstable environment.
C) a cold front encounters a warm front.
D) a maritime polar air mass encounters a maritime tropical air mass.
Answer:
Why do ethers have lower boiling points than that of an alcohol of the same molecular
weight?
A) Ethers cannot hydrogen bond to other ethers.
B) Ethers do not have hydrogens.
C) Ethers are more flammable and vaporize more easily.
D) Ethers have higher boiling points than alcohols.
E) all of the above
Answer: