According to the shell model, which electrons play the most significant role in
determining the properties of an atom?
A) those in the innermost shell
B) those in the shells between the innermost and outermost shells
C) those in the outermost shell
D) Electrons in every shell are just about equally important.
Answer:
If the solubility of a compound is 72 grams per liter, how many grams of the compound
will dissolve in 0.50 liters?
A) 36 g
B) 72 g
C) 144 g
D) 30 g
E) none of the above
Answer:
A sustained flow of electric charge requires
A) a potential difference.
B) a resistance.
C) an electric field.
D) electric polarization.
Answer:
Movement of the lithosphere
A) has a plastic-like flow.
B) causes earthquakes and volcanic activity.
C) has a leisurely pace and allows the formation of gentle rolling hills.
D) is intermittent.
Answer:
Which temperature scale has the smallest sized degrees?
A) Fahrenheit
B) Celsius
C) Kelvin
D) none of the above
Answer:
Relativity is the
A) study of how space, energy, and mass are related to time.
B) concept that there are no absolutes that can be postulated.
C) idea that space bends in relationship to the square of the mass contained within it.
D) study of wormholes and time travel.
Answer:
Isostasy is
A) crustal equilibrium relative to the mantle.
B) the buoyant force exerted on the mantle by oceanic crust.
C) the buoyant force exerted on the mantle by continental crust.
D) crustal equilibrium relative to Earth’s surface.
Answer:
Temperature decreases with altitude in the
A) troposphere.
B) stratosphere.
C) thermosphere.
D) all of these
Answer:
Why is the air over an open flame always moist?
A) The hot flame vaporizes the water in the air above the flame.
B) One of the products of combustion is water vapor.
C) Warm air contains more humidity than cold air.
D) None of the above is true.
Answer:
You slowly rub your wet finger around the thin rim of a wine glass while you hold its
base firmly to a tabletop with your other hand. The resulting sounds illustrates
A) forced vibrations.
B) resonance.
C) both of these
D) none of the above
Answer:
A pane of red glass transmits primarily
A) red light.
B) the complementary color of red light.
C) all colors of light.
Answer:
A good heat conductor is a
A) poor insulator.
B) good insulator.
C) neither of these
Answer:
Ice wedgingfreezing of water in cracksis an example of
A) chemical weathering.
B) mechanical weathering.
C) iron oxide stain.
D) lithification.
Answer:
A boxer punches a sheet of paper in midair from rest to a speed of 40 m/s in 0.05 s. If
the mass of the paper is 0.01 kg, the force of the punch on the paper is
A) 0.08 N.
B) 0.8 N.
C) 8.0 N.
D) 80 N.
Answer:
In an electrically neutral atom the number of protons in the nucleus is equal to the
number of
A) electrons that surround the nucleus.
B) neutrons in the nucleus.
C) both of these
D) none of the above
Answer:
The portion of the atmosphere that filters out 95 percent of the incident UV radiation is
the
A) ozone layer.
B) stratosphere.
C) troposphere.
D) aerosol layer.
E) particulates.
Answer:
A completely submerged object always displaces its own
A) volume of fluid.
B) weight of fluid.
C) density of fluid.
D) all of the above
E) none of the above
Answer:
Recoil is noticeable if we throw a heavy ball while standing on a skateboard. If instead
we go through the throwing motion but hold onto the ball, without friction effects our
net recoil will be
A) zero.
B) the same as before.
C) small, but noticeable.
Answer:
Which becomes warmer in sunlight, sunglasses or clear reading glasses?
A) sunglasses.
B) reading glasses.
C) both of these
D) none of the above
Answer:
How is a larger star like an SUV, while a smaller star like a fuel efficient hybrid
vehicle?
A) The larger the star, the faster it burns fuel.
B) The larger the star, the more likely it is to explode.
C) The larger the star, the shorter its life span.
D) Larger stars have only one source of energy.
Answer:
What travels up and down the Sun’s magnetic loops extending from the surface?
A) helium atoms
B) plasma
C) hyrogen atoms
D) a blend of helium and hydrogen atoms
Answer:
What would the concentration of OH– be if the concentration of H3O+ was 1 10-8M?
[H3O+] [OH–] = Kw = 1 10-14
A) 1 10-14
B) 1 10-6
C) 1 108
D) 1 106
E) 1 10-8
Answer:
When warm air is above cooler air it is called
A) stable.
B) unstable.
C) a temperature inversion.
D) a Chinook.
Answer:
Transformers use ac so there will be the required
A) transfer of energy from coil to coil.
B) voltage for transformation.
C) change in magnetic field for operation.
D) change in input current.
E) magnetic field intensities.
Answer:
To say that electric charge is conserved means that no case has ever been found where
A) the net charge on an object has changed.
B) the net amount of charge on an object has increased.
C) net charge has been created or destroyed.
D) none of the above
Answer:
If a volume of air is warmed, it expands. If a volume of air expands, it
A) warms.
B) cools.
C) neither of these
Answer:
According to plate tectonic theory, the San Andreas fault is a
A) convergence zone.
B) divergence zone.
C) subduction zone.
D) transform fault.
Answer:
A cat strolls across your backyard. An hour later, a dog with its nose to the ground
follows the trail of the cat. Explain what is going on from a molecular point of view.
A) The dog is following the areas of increased density of the Earth.
B) The dog is smelling atoms from the cat.
C) The dog is smelling molecules from the cat.
D) The cat is leading the dog into a trap.
Answer:
Boiling water burns are less damaging than steam burns because boiling water
A) doesn’t condense and release additional energy.
B) has less energy per kilogram than steam.
C) both of these
D) none of the above
Answer:
Mixtures can be separated into their components by taking advantage of differences in
the chemical properties of the components. Why might this separation method be less
convenient than taking advantage of differences in the physical properties of the
components?
A) A chemical property involves a chemical change so that you no longer have what
you had.
B) Chemical properties are not as apparent as are physical properties.
C) The chemical properties of the components of a mixture are too similar to each other.
D) The chemical properties of the components of a mixture are too different from each
other.
Answer:
The natural circulation of waterfrom ocean to air to ground to ocean and then back to
the atmosphereis called the
A) circle of life.
B) hydrologic cycle.
C) carbon cycle.
D) rock cycle.
Answer: