Which of the monomers below would be used to make the following polymer?
A) HC CHCH3
B) H2CCH2CH3
C) HC CHCHC CHCH3
D) H2C CH2
E) none of the above
Answer:
According to inflation theory, parallel lines appear to remain parallel because
A) the universe is so unbelievably large.
B) mass has the effect of balancing the natural curvature of space-time.
C) space is inherently flat.
D) the universe is so very old.
Answer:
In a solution made from one teaspoon of sugar and one liter of water, which is the
solute?
A) sugar
B) water
C) the teaspoon
D) both sugar and water
E) none of the above
Answer:
Complete the following nuclear equation:
Tl → Pb + ??
A) e
B) He
C) gamma ray
D) both A and B
E) none of the above
Answer:
How does a catalyst increase the rate of a reaction?
A) It lowers the activation energy.
B) It is neither created nor consumed in a reaction.
C) It has nothing to do with the rate of reaction.
D) It increases the energy difference between the reactants and products.
E) It raises the activation energy of the reactants, which makes the reaction proceed
faster.
Answer:
When Ken Ford wears noise-canceling earphones in his airplane, he is applying
A) anti-noise technology.
B) beats.
C) resonance of sound.
D) all of these
E) none of the above
Answer:
The Permian period experienced major extinctions, which may have been due to
A) global warming.
B) the emergence of the reptile.
C) the breakup of Pangaea.
D) the formation of Pangaea.
Answer:
A magnetic field exists in a current-carrying coil of wire
A) if it contains a piece of iron.
B) with or without a contained piece of iron.
C) only if the current changes.
Answer:
In a battery, if the following oxidation-reduction reactions takes place normally:
Mn2O3 + ZnO → 2 MnO2 + Zn
What reaction would be taking place if you were charging the battery?
A) 2 MnO2 + Zn → Mn2O3 + ZnO
B) ZnO → Zn
C) Mn2O3 → MnO2
D) all of the above
E) none of the above
Answer:
What is an organic compound?
A) any molecule that is made mostly of carbon with no metals in it
B) compound grown with organic farming methods
C) any compound isolated from living organisms
D) any compound where there are metals bound to other types of atoms
E) anything that is a salt obtained from organic creatures
Answer:
The compound 6-aminohexanoic acid is used to make the condensation polymer
nylon-6. Polymerization is not always successful, however, because of a competing side
reaction. What is this side reaction?
A) One 6-aminohexanoic acid reacts with another and this reaction is favored in dilute
solutions.
B) One 6-aminohexanoic acid reacts with another and this reaction is favored in
concentrated solutions.
C) One end of the 6-aminohexanoic acid reacts with the other and this reaction is
favored in dilute solutions.
D) One end of the 6-aminohexanoic acid reacts with the other and this reaction is
favored in concentrated solutions.
Answer:
Compression cannot produce
A) anticlines.
B) synclines.
C) normal faults.
D) reverse faults.
Answer:
To help determine the age of rock layers over a large area we can use the principle of
A) original horizontality.
B) lateral continuity.
C) superposition.
D) fossil assemblage.
Answer:
How is ozone produced in the upper atmosphere?
A) It forms by reaction of oxygen molecules with UV light.
B) It forms by nuclear decomposition of oxygen.
C) It diffuses from the lower atmosphere.
D) It forms by the reaction of nitric dioxide and oxygen.
E) all of the above
Answer:
On a weather map, closely spaced circular isobars around a central low pressure area
with winds moving counterclockwise about the center may represent
A) approaching fair weather.
B) a hurricane.
C) an approaching snow storm.
Answer:
Fred swings a sheet of copper in pendulum fashion between the poles of a strong
magnet. The sheet slows in entering the magnetic field because the field
A) induces swirling currents in the copper and accompanying magnetic fields that resist
motion.
B) experiences both air and magnetic friction.
C) is repelled by free electrons in the copper.
D) none of the above
Answer:
Which force binds atoms together to form molecules?
A) gravitational
B) nuclear
C) electric
D) centripetal
E) none of the above
Answer:
An Alka-Seltzer antacid tablet bubbles vigorously when placed in water but only slowly
when placed in an alcoholic beverage of the same temperature containing a 50:50 mix
of alcohol and water. Propose a probable explanation involving the relationship
between the speed of a reaction and molecular collisions.
A) The alcohol absorbs the carbon dioxide bubbles before they escape the liquid phase.
B) Alcohol molecules are more massive than water molecules, hence they move slower
and their collisions are not as forceful.
C) The tablet reacts with water but not the alcohol.
D) In a 50:50 mix there are fewer water molecules for the antacid molecules to collide
with.
Answer:
Electromagnetic waves can travel in
A) a vacuum.
B) water.
C) both of these
D) none of the above
Answer:
In one type of fuel cell, the following oxidation-reduction reactions are taking place:
2 H2 + O2 → 2 H2O
What is the oxidant?
A) H2
B) O2
C) H2O
D) all of the above
E) none of the above
Answer:
On which temperature scale is 212 degrees the boiling point of water?
A) Celsius
B) Caloric
C) Kelvin
D) Fahrenheit
E) none of the above
Answer:
When ultraviolet light is incident upon glass, most atoms in the glass
A) resonate.
B) pass the light energy along practically undiminished.
C) freely absorb and reemit most of the ultraviolet light.
Answer:
If a baseball were scaled up to the size of planet Earth, each of its atoms would be about
the size of
A) a baseball stadium.
B) a flea.
C) an atom.
D) a ping-pong ball.
Answer:
Ocean waves refract due to
A) wave interference.
B) ocean swells.
C) shallow water.
D) transverse motion.
Answer:
If a neutral atom gains two electrons, what is the electrical charge of the atom?
A) -1
B) +1
C) -2
D) +2
E) neutral
Answer:
Heat can be added to air by solar radiation, moisture
A) condensation, or contact with warm ground.
B) evaporation, or contact with warm ground.
C) condensation, or contact with cool ground.
D) evaporation, or contact with cool ground.
Answer:
Both heavy and light molecules make up a sample of gas. On average, the slower
molecules are the
A) heavy ones.
B) light ones.
C) no difference
D) not enough information
Answer:
Your density is slightly greater when you are
A) at the top of a mountain.
B) submerged deep in water.
C) in a fast-moving vehicle.
D) none of the above
Answer:
If a neutral element has the following chemical symbol, how many electrons does it
have?
U
A) 92
B) 82
C) 235
D) 143
E) none of the above
Answer:
At absolute zero, a substance has
A) absolutely no molecular motion.
B) no more energy to give up.
C) no volume.
D) all of the above
Answer:
Would you use a physical model or a conceptual model to describe the following: a
gold coin, dollar bill, car engine, air pollution, virus, spread of sexually transmitted
disease?
A) conceptual modelgold coin, car engine, virus; physical modelair pollution, spread of
sexually transmitted disease, dollar bill
B) physical modelgold coin, car engine, virus; conceptual modelair pollution, spread of
sexually transmitted disease; dollar bill, which could represent wealth, may well be
described by either model.
C) You could adequately describe all of the topics by either model. The choice depends
only on the characteristics requiring description.
D) physical modelgold coin, dollar bill, car engine; conceptual modelvirus, air
pollution, spread of sexually transmitted disease
Answer:
When you remove electrons from a metal cup, the cup becomes
A) negatively charged.
B) positively charged.
C) ionized.
Answer:
An electron de-excites from the fourth quantum level to the third and then directly to
the first. Two frequencies of light are emitted. How do their combined energies compare
to the energy of the single frequency that would be emitted by de-excitation from the
fourth level directly to the first level?
The combined energies of the two frequencies emitted by the one electrons is
A) greater than the energy of the single frequency.
B) less than the energy of the single frequency.
C) equal to the energy of the single frequency.
D) not predictable because other factors, such as the temperature of the surroundings
must also be considered.
Answer:
What does partial melting have to do with silica content of a magma?
Answer:
What is the meaning of the expression ΣF = 0?
Answer:
Does Earth’s surface significantly influence the flow of air above it?
Answer:
What are the similarities and differences between Coulomb’s law and Newton’s law of
gravitation?
Answer:
The melting point of silicate minerals is strongly dependent on the amount of silica they
contain. Generally speaking, which minerals are the first to melt?
Answer:
Pebbles of granite are very common in a conglomerate, whereas pebbles of marble are
relatively uncommon. Why is this? What are the properties of the different minerals in
these rocks?
Answer:
What information is needed in order to forecast today’s weather?
Answer:
A radiometric date is determined from mica that has been removed from a rock. What
does the date signify if the mica is found in granite? What does the date signify if the
mica is found in schist?
Answer:
What two factors can change a rock’s melting point?
Answer:
What is a temperature inversion?
Answer:
The Chinook wind is a warm, dry wind that descends the eastern slope of the Rocky
Mountains. What makes these winds so warm and dry?
Answer:
What is the Doppler effect, and how is it produced? Cite two examples.
Answer:
Where and how do deltas form?
Answer:
On what four assumptions is the principle of faunal succession based?
Answer:
At the same level and temperature in the atmosphere, is moist air lighter or heavier than
dry air?
Answer:
In what way could sea level rise? Is this likely to happen in the future? Why or why
not?
Answer: