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Are the chemical reactions that take place in a disposable battery exothermic or
endothermic? Is the reaction going on in a rechargeable battery while it is recharging
exothermic or endothermic?
A) An operating disposable battery is driven by endothermic reaction, while a
recharging rechargeable battery is also driven by endothermic reactions.
B) An operating disposable battery is driven by exothermic reaction, while a recharging
rechargeable battery is driven by endothermic reactions.
C) An operating disposable battery is driven by endothermic reaction, while a
recharging rechargeable battery is driven by exothermic reactions.
D) An operating disposable battery is driven by exothermic reaction, while a recharging
rechargeable battery is also driven by exothermic reactions.
Answer:
Magma is generated at all of these plate boundaries except
A) divergent boundaries.
B) oceanic-oceanic convergent boundaries.
C) oceanic-continental convergent boundaries.
D) continental-continental convergent boundaries.
Answer:
Which of the following is a necessary condition for an ice mass to be a glacier?
A) Accumulation must exceed ablation.
B) Basal sliding must occur.
C) The ice mass must move under its own weight.
D) Meltwater must be present.
Answer:
Rainfall associated with an advancing cold front is generally
A) drizzly.
B) heavy with gusty winds.
C) slow and steady.
D) light to moderate, with steady mild winds.
Answer:
A TV screen looked at from a distance appears as a smooth continuous flow of images.
Up close, however, we see this is an illusion. What really exists are a series of tiny dots
(pixels). This is similar to a chemist's view of matter in that
A) the fundamental particles of matter can also be seen when looked at closely with a
magnifying glass.
B) on the submicroscopic level, chemist's find that matter is made of extremely small
particles, such as atoms and molecules.
C) anything that a chemist can see, touch, hear, smell, or taste is an illusion.
D) elements are made up of only three basic types of matter.
Answer:
The parabolic path of a cannonball fired from a mountain top is actually
A) a segment of a circle if firing is horizontally.
B) a segment of an ellipse.
C) a path for escape speed.
D) none of the above
Answer:
On the surface of the Moon where acceleration due to gravity is less, a person's hang
time would be
A) longer.
B) shorter.
C) the same as on Earth.
Answer:
The inversion of Marjorie's image in a plane mirror is actually an inversion of
A) left and right.
B) up and down.
C) front and back.
D) all of the above
Answer:
Precession is
A) when the elliptical orbits of planets slip forward with each revolution.
B) the process of planetary evolution.
C) the stage before planets stabilize into a stationary orbit.
D) the wobbling of a planet's axis of rotation.
Answer:
Which of the following statements best describes a critical mass?
A) A critical mass is the minimum amount of material that will undergo nuclear
detonation.
B) A critical mass is the minimum amount of material that will spontaneously undergo a
chain reaction.
C) A critical mass cannot be assembled from smaller, noncritical pieces of material.
D) A critical mass will detonate when it is separated into subcritical pieces.
E) none of the above
Answer:
Which of the following describes the term concentration?
A) It is what you are doing now to answer this question.
B) It is the amount of solute in a given amount of solution.
C) It is the amount of solvent in a given amount of solution.
D) It is the given amount of solution in a given container.
E) It is the given amount of solvent per amount of solute.
Answer:
In one type of fuel cell the following oxidation-reduction reactions are taking place:
2 H2 + O2 → 2 H2O
What is the fuel?
A) H2
B) O2
C) H2O
D) all of the above
E) none of the above
Answer:
How many valence electrons does bromine (Br, atomic no. = 35) have?
A) 1
B) 7
C) 21
D) 28
E) 35
Answer:
When bullets are fired in a forward direction from a fighter aircraft, the momentum of
the aircraft
A) decreases.
B) is unchanged.
C) increases.
Answer:
Light travels faster in
A) warm air.
B) cool air.
C) a vacuum.
Answer:
Uplift of the Rocky Mountains was a result of
A) compressional forces.
B) tensional forces.
C) crustal extension.
D) none of these
Answer:
Aristotle treated motion by
A) comparing the distance traveled with the time of travel.
B) measurements of distance traveled.
C) dividing it into two classes.
D) all of the above
Answer:
An iron ball and wooden ball of the same size are dropped simultaneously from a tower
and reach the ground at the same time. The iron ball has a greater
A) speed.
B) acceleration.
C) momentum.
D) all of the above
E) none of the above
Answer:
The flow of electrons in an electric circuit move by
A) bumping other electrons.
B) colliding with molecules.
C) interacting with an established electric field.
D) none of the above
Answer:
If a projectile is fired straight up at a speed of 10 m/s, neglecting air resistance, the time
it takes to reach the top of its path is
A) 1 s.
B) 2 s.
C) 10 s.
D) not enough information
Answer:
Current that is typically 60 hertz is
A) direct current.
B) alternating current.
C) either of these
D) neither of these
Answer:
In a sequence of rock layers we find trilobite fossils at the bottom of the rock sequence
and dinosaur fossils directly above the trilobite fossils. We conclude that
A) trilobites survived up to the time of the dinosaurs.
B) the beds are overturned.
C) the processes of erosion created a gap between the age of trilobites and the age of
dinosaurs.
D) dinosaurs fed on trilobites.
Answer:
If the following generic atom were to undergo ionization, what would be the charge of
the most likely product?
A) +2
B) -2
C) -6
D) +6
E) would probably not ionize
Answer:
Which of the following statements best describes the strong nuclear force?
A) The force is very strong but has a very short range.
B) The electrical force is stronger than the nuclear force.
C) The force is very strong and works over very long distances.
D) The strength of the force increases with distance.
E) The force has two sides: the light side and the dark side.
Answer:
Most coal deposits were formed in the
A) Cenozoic era.
B) Mesozoic era.
C) Paleozoic era.
D) Precambrian era.
Answer:
If a room is cold it is usually due to the
A) lack of adequate thermal energy.
B) low air pressure.
C) presence of the entity known as cold.
Answer:
If an element has 10 protons and 11 neutrons and 10 electrons, which expression
correctly identifies the element?
A) neon-21
B) neon-11
C) neon-31
D) sodium-11
E) sodium-20
Answer:
The amount of water vapor the air can hold depends on air temperature. At higher
temperatures the air
A) holds less water vapor.
B) can hold more water vapor.
C) is saturated.
D) holds water vapor at its dew point.
Answer:
Six seconds after starting from rest, a freely-falling baseball has a speed of
A) 10 m/s.
B) 30 m/s.
C) 60 m/s.
D) 70 m/s.
Answer:
The exhaust product from a hydrogen fuel cell is
A) carbon dioxide.
B) methane.
C) pure water.
D) nitric acid.
Answer:
The neon atom tends not to gain any additional electrons because
A) its nuclear charge is not great enough.
B) that would result in a positive ion.
C) of the repulsions they would experience with electrons in the same shell.
D) there is no more room available in its outermost occupied shell.
Answer:
