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The overflow of gasoline from a car's full metal tank on a hot day is evidence that
gasoline expands
A) more than metal.
B) about the same as metal.
C) less than metal.
D) none of the above.
Answer:
Hot water will cool to room temperature faster in a
A) black pot.
B) silver pot.
C) depends on size, not color
Answer:
The conservation of momentum is most closely related to Newton's
A) first law.
B) second law.
C) third law.
Answer:
When sound waves superimpose they can interfere
A) constructively.
B) destructively.
C) either of these
D) neither of these
Answer:
Steel wool wetted with vinegar is sealed within a balloon inflated with air. After several
hours, what happens to the volume of the balloon?
A) The balloon inflates.
B) The balloon deflates.
C) The balloon dissolves.
D) Nothing because the vinegar is acting on the steel wool, not upon the balloon.
Answer:
Which star will emit the shortest wavelength of its peak frequency?
A) a blue star
B) a yellow star
C) a red star
D) a green star
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 distinction between impulse and force involves the
A) distance the force acts.
B) time the force acts.
C) difference between acceleration and velocity.
D) mass and its effect on resisting a change in momentum.
Answer:
In the 1950s a plot of the position of the magnetic north pole through time revealed that
A) either the magnetic poles had migrated through time or the continents had moved.
B) polar magnetization varied from pole to pole.
C) over the past 500 million years the geographic poles changed position at least once
or twice.
D) all of the above.
Answer:
Hurricanes fit into which category below?
A) cyclones
B) anticyclones
C) gyres
D) cold fronts
Answer:
Why does the melting point of hydrocarbons increase as the number of carbon atoms
per molecule increases?
A) An increase in the number of carbon atoms per molecules also means an increase in
the density of the hydrocarbon.
B) because of greater induced dipole-induced dipole molecular attractions
C) Larger hydrocarbon chains tend to be branched.
D) The molecular mass also increases.
Answer:
Planets wobble in their orbits due to
A) the gravitational attraction to other planets.
B) uncertainties in the inverse-square law.
C) elliptical-orbit quirks.
D) all of the above
E) none of the above
Answer:
How many electrons are gained or lost in the following half-reaction?
Cl2 → 2 Cl-
A) 2 electrons are lost
B) 1/2 electron is gained
C) 1/2 electron is lost
D) 2 electrons are gained
E) 4 electrons are gained
Answer:
In general, a stream with a high discharge tends to have
A) increased laminar flow.
B) increased turbulent flow.
C) a high velocity.
D) a narrow stream channel.
Answer:
How many moles of water, O, are produced from the reaction of 16 grams methane,
C , with an unlimited supply of oxygen, . How many grams of O is this?
C + 2 → C + 2 O
A) 0.889 mole, which is 16 grams
B) 2.0 moles of water, which is 32 grams
C) 2.0 moles of water, which is 36 grams
D) 1.0 mole of water, which is 18 grams
Answer:
Is the synthesis of ozone, , from oxygen, , an example of an exothermic or
endothermic reaction?
A) exothermic because ultraviolet light is emitted during its formation
B) endothermic because ultraviolet light is emitted during its formation
C) exothermic because ultraviolet light is absorbed during its formation
D) endothermic because ultraviolet light is absorbed during its formation
Answer:
In a meandering river, erosion is most notable on
A) the outer side of the meander.
B) the inner side of a meander.
C) both sides of a meander.
D) the bottom of the stream channel.
Answer:
Our local group is situated
A) within a major supercluster.
B) directly between two major superclusters.
C) relatively distant from any supercluster.
Answer:
How might you tell whether or not your toothpaste contained either calcium carbonate,
CaC , or baking soda, NaHC , without looking at the ingredients label?
A) if the toothpaste bubbles when heated
B) if the toothpaste bubbles when added to ammonia, such as window cleaner
C) if the toothpaste produces a salt (NaCl) when added to HCl
D) if the toothpaste bubbles when added to vinegar
Answer:
What is the formula mass of a molecule of CO2?
A) 44 amu
B) 56 amu
C) 58.9 amu
D) 118 amu
E) none of the above
Answer:
A ball tossed vertically upward reaches its highest point and then falls back to its
starting point. During this up-and-down motion the acceleration of the ball is always
A) in the direction of motion.
B) opposite its velocity.
C) directed upward.
D) directed downward.
Answer:
The best time for digging clams (when low tide is extra low) is during the time of the
A) new or full moon.
B) half moon.
C) quarter moon.
D) none of these times.
Answer:
You do work on a cart loaded with groceries. If you do this work in one-third the usual
time, you expend
A) one third as much power.
B) the usual power.
C) three times the usual power.
D) need more information.
Answer:
A 50-kg sack is lifted 2 m in the same time as a 25-kg sack is lifted 4 m. The power
expended in raising the 50-kg sack compared to the power used to lift the 25-kg sack is
A) twice as much.
B) half as much.
C) the same.
Answer:
Which of the following materials is most likely to act as an oxidizing agent?
A) Na
B) Na+
C) Cl2
D) Cl-
E) both A and B
Answer:
Compared to a glass of ice water with ice, a glass of plain ice-cold water without ice on
a warm day will warm up
A) faster.
B) slower.
C) in the same amount of time.
Answer:
If the radius of the Earth somehow decreased with no change in mass, your weight
would
A) decrease.
B) increase.
C) not change.
Answer:
It is correct to say that impulse is equal to
A) momentum.
B) the change in momentum.
C) the force multiplied by the distance the force acts.
D) all of the above
E) none of the above
Answer:
What is stream channel geometry?
A) The change in elevation of a stream.
B) The shape of a stream channel as seen on a map.
C) The amount of turbulence and laminar flow in a stream.
D) The cross-sectional area and cross-sectional shape of a stream channel.
Answer:
Blocks of ice buried in a glacial moraine often result in the formation of
A) drumlins.
B) roches moutonnees.
C) small glacial lakeskettle lakes.
D) eskers.
Answer:
If you plug a 110-V electric toaster into a 220-V outlet, current in the toaster will be
about
A) half what is should be.
B) the same as if it were plugged into a 110-V outlet.
C) more than twice what it should be.
D) twice what it should be.
Answer:
The ultimate truth of any radiometric date depends on the
A) size of the given sample.
B) chemical composition of the sample being tested.
C) precision and accuracy of the lab techniques.
D) reset date of the sample.
Answer:
The circular path of a satellite orbiting Earth is characterized by a constant
A) speed.
B) acceleration.
C) radial distance.
D) all the above
E) none of the above
Answer:
What is the name of the following compound?
CaCl2
A) calcium chloride
B) carbon chloride
C) dichlorocalcium
D) calc two
E) dicalcium chloride
Answer:
