If a power plant is 30% efficient, and the transmission system that delivers power to
consumers is 60% efficient, then the overall efficiency is
A) 90%.
B) 60%.
C) 30%.
D) 18%.
E) none of the above
Answer:
The depositional landform at the farthest advance of a glacier is called a
A) lateral moraine.
B) medial moraine.
C) terminal moraine.
D) stratified moraine.
Answer:
Your bare feet feel warmer on a rug than on a tile floor because the rug
A) is usually warmer than tile.
B) is a better insulator than tile.
C) has more thermal energy than tile.
D) all of the above
E) none of the above
Answer:
Cosmology is the study of the overall structure and evolution of
A) the universe.
B) stars.
C) beauty.
D) galaxies.
Answer:
An object is placed exactly halfway between the Earth and the Moon. The object will
fall toward the
A) Earth.
B) Moon.
C) neither
Answer:
Which of the following solutions is the most acidic?
A) a solution with a pH = 14
B) a solution with a pH = 12
C) a solution with a pH = 7
D) a solution with a pH = 13
E) All of the solutions are basic.
Answer:
Which of these does not have an electrical charge?
A) proton
B) electron
C) neutron
D) all of the above
E) none of the above
Answer:
Oxygen, , is certainly good for you. Does it follow that if small amounts of oxygen
are good for you then large amounts of oxygen would be especially good for you?
A) Yes. This is the reason patients are given pure (100%) oxygen during medical
procedures.
B) Yes. Increased oxygenation of the bloodstream is good for you and can increase your
life span.
C) No. Breathing 100% oxygen for extended periods of time can be damaging to the
body.
D) No. Large amounts of oxygen will absorb hydrogen from the body and increase the
amount of water in the body causing an imbalance in electrolytes.
Answer:
Which air mass has greater air pressure?
A) warm air
B) cold air
C) adiabatic air
D) expanding air
Answer:
Which of the following statements best describes an anode?
A) the negatively charged electrode of a battery or electrochemical apparatus
B) the place where oxidation is taking place in a battery or electrochemical apparatus
C) the place from which electrons are flowing away from
D) all of the above
E) none of the above
Answer:
The silica content of magma greatly affects its viscosity. Magma with a high silica
content has a
A) high viscosity and flows quickly.
B) high viscosity and flows slowly.
C) low viscosity and flows quickly.
D) low viscosity and flows slowly.
Answer:
A wave travels an average distance of 6 m in 0.5 s. What is the wave’s average velocity?
A) less than 0.2 m/s
B) 1 m/s
C) 3 m/s
D) 6 m/s
E) more than 6 m/s
Answer:
Cold water will warm to room temperature faster in a
A) black pot.
B) silver pot.
C) depends on size, not color
Answer:
Compared to the mass of a proton, the mass of an electron is
A) very much less.
B) identical.
C) greater.
Answer:
The hang time of an athlete who moves horizontally 2.0 m during a 1.25-m-high jump
is
A) less than 1 s.
B) about 1 s.
C) more than 1 s.
Answer:
Which of the following are advantages offered by the thorium nuclear reactor?
A) operates at relatively low temperatures
B) produces isotopes of short radioactive half-lives
C) difficult to use for bomb making
D) All of the above.
Answer:
A tuning fork of frequency 200 hertz can resonate if an incident sound wave has a
frequency of
A) 100 hertz.
B) 200 hertz.
C) both of these
D) neither of these
Answer:
Refraction results from changes in light’s
A) frequency.
B) incident angles.
C) speed.
D) all of the above
E) none of the above
Answer:
In what sense can you truthfully say that you are a part of every person around you?
A) We all live on the same planet and share the same resources.
B) We are continually exchanging our atoms.
C) We all share the same genetic code.
D) There are more people alive now than have ever lived.
Answer:
The complementary color of blue is
A) red.
B) green.
C) yellow.
D) cyan.
E) magenta.
Answer:
How many grams of water can be produced by the combination of 8 grams of oxygen
and 8 grams of hydrogen?
A) 16 grams
B) 10 grams
C) 9 grams
D) 8 grams
Answer:
To achieve a high equivalent resistance for a pair of resistors, connect them in
A) series.
B) parallel.
C) either of these
Answer:
When an air mass passes from a maritime source region to a warmer continental region,
heating from the warmer land causes
A) frontal lifting.
B) orographic lifting.
C) convectional lifting.
D) adiabatic lifting.
Answer:
The equivalent resistance of resistors connected in series in a circuit is
A) often less than the resistance of the lowest resistor.
B) always less than the resistance of the lowest resistor.
C) usually half the value of the lowest resistor.
D) none of the above
Answer:
As water is withdrawn from a well, the water table around the well
A) subsides.
B) drops, making a cone of depression around the well.
C) dries up.
D) rises.
Answer:
As a wave-generating object moves through a medium, the waves behind
A) bunch up.
B) stretch out.
C) neither of these
Answer:
The core of the Moon is
A) solid.
B) liquid.
C) gaseous.
D) Not enough information is known for an answer.
Answer:
When a solid is changed to a liquid phase, the solid
A) releases energy.
B) absorbs energy.
C) neither of these
D) none of the above
Answer:
Why are noble gases infinitely soluble in noble gases?
A) The noble gases are attracted to each other by induced dipole-induced dipole
attractions, but there is only one attraction per molecule.
B) These are the smallest atoms on the periodic table.
C) The molecules do not interact with each other, excluding other molecules.
D) Noble gases can be mixed homogeneously in any proportion.
Answer:
Compared with the huge force that attracts an iron tack to a strong magnet, the force
that the tack exerts on the magnet is
A) relatively small.
B) equally huge.
C) not enough information
Answer:
When you stretch a rubber band, you are applying
A) compressional stress.
B) tensional stress.
C) shear stress.
D) simple stress.
Answer:
As air rises, it cools and clouds can form. The rate of cooling determines the elevation
of cloud formation and cloud thickness. From first to last, the rates of cooling are
A) dry adiabatic lapse ratecloud base; moist adiabatic lapse ratecloud thickness;
environmental lapse rateupper limit of cloud.
B) moist adiabatic lapse ratecloud base; dry adiabatic lapse ratecloud thickness;
environmental lapse rateupper limit of cloud.
C) environmental lapse ratecloud base; moist adiabatic lapse ratecloud thickness; dry
adiabatic lapse rateupper limit of cloud.
Answer:
If water at 4C slightly increases in temperature, the water
A) contracts.
B) expands.
C) neither of these
Answer:
Distinguish between anticlines and synclines.
Answer:
What types of changes occurred in land-dwelling animals during the Mesozoic?
Answer:
What is the Mohorovicic discontinuity?
Answer:
Distinguish between the concepts of velocity and acceleration, using a bowling ball’s
behavior as an example for each.
Answer:
How is a seismogram similar to an X-ray?
Answer:
A falling boulder experiences a force, which is responsible for its acceleration. What is
the reaction to this force? How can this question be better phrased?
Answer:
What is the cause of a magnetic field about a permanent magnet and about a
current-carrying wire?
Answer:
Does the rock cycle always follow a certain path? In other words, is it a one-way
process?
Answer:
Distinguish between an asteroid, a meteoroid, and a comet.
Answer:
How do caves and caverns form in limestone?
Answer:
What is the evidence for Earth’s central core being solid?
Answer:
The Earth and the Moon gravitationally attract each other. Does the more massive Earth
attract the Moon with a greater force, the same force, or less force than the Moon
attracts the Earth? What reasoning guides your answer?
Answer:
The amount of carbon dioxide emissions from fossil fuel combustion has increased with
population. Yet the amount of carbon dioxide emitted is greater than the amount found
in the atmosphere. Where does all the excess atmospheric carbon dioxide go?
Answer:
Why is ultraviolet light not transmitted by glass?
Answer:
A diesel locomotive coasting at 10 km/h has an inelastic collision with a stationary
flatcar. The locomotive weighs four times as much as the flatcar. How fast does the
locomotive-flatcar combination move when stuck together?
Answer: