The Milky Way galaxy is
A) in the process of colliding with the Magellanic Cloud galaxies.
B) where Earth resides.
C) a spiral galaxy.
D) All of the above
Answer:
The ocean can be divided into several vertical layersthe surface zone, a transition zone,
and the deep zone. As one descends to lower depths, water pressure ________ and
temperature ________.
A) increases; decreases
B) decreases; increases
C) increases; increases
D) decreases; decreases
Answer:
Why are combustion reactions generally exothermic?
A) Hydrogen easily pulls electrons from the oxygen in water molecules and are
reduced.
B) During combustion oxygen is oxidized, which gives off lots of energy.
C) Combustion involves the transfer of electrons to oxygen, which has an extremely
high tendency for gaining electrons.
D) It is highly exothermic because combustion involves an oxidation-reduction reaction
between a metallic material and oxygen.
Answer:
When we consider the distance a pendulum swings to and fro we’re talking about the
pendulum’s
A) frequency.
B) period.
C) wavelength.
D) amplitude.
Answer:
What do the electron configurations for all the group 18 noble gases have in common?
A) They have the same number of electrons.
B) They occupy the same number of shells.
C) Their outermost occupied shells are filled to capacity.
D) all of the above
Answer:
Shake an object to and fro if you want to judge its
A) mass.
B) weight.
C) both the same
D) none of the above
Answer:
Atmospheric lifting resulting from the convergence of two different air masses is called
A) convectional lifting.
B) orographic lifting.
C) adiabatic lifting.
D) frontal lifting.
Answer:
In walking barefoot on red-hot coals, to prevent bits of coal sticking to your feet, it
would be safer if your feet are
A) wet.
B) dry.
C) either of these
D) none of the above
Answer:
Quasars are
A) ancient, extremely high energy galaxies believed to have formed in the early
universe.
B) a conglomeration of pulsars within a galaxy.
C) a conglomeration of spiral galaxies.
D) white dwarfs that have undergone final collapse.
Answer:
The ecliptic
A) occurs during a solar or lunar eclipse.
B) is the average distance between the Sun and Earth.
C) is the plane of Earth’s orbit.
D) refers to the gases from which our solar system formed.
Answer:
Which of the following emits more radiation?
A) a coal-fired power plant
B) a nuclear power plant
C) fallout from nuclear tests in the ’50s and ’60s
D) a television set
E) a computer monitor
Answer:
How is the solubility of a gas affected by temperature?
A) As temperature goes up, the solubility goes up.
B) As temperature goes down, the solubility goes down.
C) As temperature goes up, the solubility stays the same.
D) As temperature goes down, the solubility goes up.
E) both A and B
Answer:
Where would you expect to isolate molecules in a fractionating tower that have very
few interatomic attractions?
A) near the bottom
B) near the top
C) near the middle
D) Fractional distillation takes advantage of molecular weight.
E) Fractional distillation takes advantage of the number of isomers.
Answer:
The addition of salt to water affects its
A) crystal composition.
B) freezing point.
C) viscosity.
D) liquidity.
E) none of the above
Answer:
What is one thing that all monomers of addition polymers have in common?
A) The monomer has to have at least one double bond.
B) The monomer has to have at least two functional groups (though they can be the
same).
C) The monomer has to have at least two functional groups (though they must be the
different).
D) The monomer has to be very small.
E) The monomer has to have a number of polymer components.
Answer:
Life jackets help you float because
A) the jacket causes you to weigh less.
B) the jacket has the same density as an average human.
C) the jacket repels water.
D) if you sink, the jacket sinks.
E) the combined density of you and the jacket is less than your density alone.
Answer:
When liquid water freezes, it
A) loses energy.
B) gives off energy.
C) gains energy.
D) radiates energy.
Answer:
Which force field can increase a moving electron’s speed?
A) electric field
B) magnetic field
C) both of these
D) none of the above
Answer:
A hunter aims a rifle at an angle of 10 above the horizontal. The hunter fires a bullet
while simultaneously dropping another bullet from the side of the rifle. The bullet to hit
the ground first is
A) the dropped one.
B) the fired one.
C) both hit at the same time
Answer:
Most meteors seen as shooting stars are about the size of
A) grains of sand.
B) baseballs.
C) small buildings.
D) very large buildings.
E) small continents.
Answer:
Allowing water to cascade or bubble in a fountain during the purification process is an
example of
A) a gas dissolving in a liquid.
B) a chemical reaction.
C) ion exchange.
D) a solid dissolving in a liquid.
E) only a and b
Answer:
The change in momentum of an object is equal to the
A) force acting on it.
B) change in its velocity.
C) object’s mass times the force acting on it.
D) impulse that acts on it.
E) all of the above
Answer:
A projectile is launched straight upward at 50 m/s. Neglecting air resistance its speed
upon returning to its starting point is
A) less than 50 m/s.
B) 50 m/s.
C) more than 50 m/s.
Answer:
If the Sun collapsed to a black hole, the time required for the Earth to orbit the
collapsed Sun would
A) increase.
B) decrease.
C) stay the same.
Answer:
Sound waves cannot travel in
A) air.
B) water.
C) steel.
D) a vacuum.
Answer:
Which of the following molecules should have the same molecular shape and
approximate bond angles as ammonia, ?
A)
B)
C)
D)
E)
Answer:
Sediments deposited in an even, horizontal manner illustrate the principle of
A) superposition.
B) original horizontality.
C) succession.
D) conformity.
Answer:
A floating leaf oscillates up and down twice in 1 s as a water wave passes by. What is
the wave’s frequency?
A) 0.5 Hz
B) 1 Hz
C) 2 Hz
D) 3 Hz
E) 6 Hz
Answer:
While driving down the highway a lovebug spatters onto your windshield. Which
undergoes the greater change in momentum during the time of contact?
A) the lovebug
B) your car
C) both the same
Answer:
The cross-sectional area and shape of a stream is called
A) hydraulic gradient.
B) discharge.
C) channel dimension.
D) channel geometry.
Answer: