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Very importantly, a hydraulic press can multiply
A) forces.
B) pressures.
C) energy.
D) all of the above
E) none of the above
Answer:
The acceleration of a Tesla that maintains a constant velocity of 120 km/h over a time
of one-half hour is
A) 60 km/h.
B) 120 km/h.
C) 240 km/h.
D) zero because of no change in velocity.
Answer:
A lunar month is about 28 days. If the Moon were closer to Earth than it is now, the
lunar month would be
A) more than 28 days.
B) unchanged at 28 days.
C) less than 28 days.
Answer:
The climate of northwestern Europe is greatly affected by the
A) Kuroshio current.
B) Gulf Stream.
C) trade winds.
D) jet stream.
Answer:
A car traveling along the highway brakes to a stop. A greater braking force is required
when the car has
A) more mass.
B) more momentum.
C) less stopping distance.
D) all of the above
E) none of the above
Answer:
What is a base?
A) anything that accepts a hydrogen ion
B) anything that accepts a hydroxide ion
C) anything that donates a hydroxide ion
D) anything that can be used to clean drains
E) anything with a bitter taste
Answer:
The theory of seafloor spreading is attributed to
A) Harry Hess.
B) Marie Tharp.
C) Alfred Wegener.
D) Richard Oldham.
Answer:
Because of refraction, a person standing waist deep in a swimming pool appears to have
A) shorter legs.
B) longer legs.
C) thinner legs.
D) none of the above
Answer:
The atomic symbol represents
A) the number of electrons in an atom of an element.
B) the name of the element.
C) the history of the element.
D) All of the above.
E) Only two of the above.
Answer:
Sand spits are formed from sand
A) carried along the coast by longshore transport.
B) swept up from the seafloor and heaped up along the shore by wave action.
C) swept up from the continental rise.
D) swept into a heap by tidal currents.
Answer:
Riding down a river in an old canoe, if the discharge of the river increases a little and
the width and the depth of the river stay the same, the speed of the river will
A) decrease.
B) increase.
C) stay the same.
D) become unpredictable.
Answer:
A crate is at rest on a horizontal floor, with nobody pushing. The friction force acting on
the crate is
A) zero.
B) equal to the weight of the crate.
C) between zero and the weight of the crate.
D) none of the above
Answer:
Surrounding every moving electron is
A) a magnetic field.
B) an electric field.
C) both of these
D) neither of these
Answer:
The color to which human eyes are most sensitive is
A) red.
B) yellow-green.
C) blue.
D) all the same
Answer:
Boiling and freezing can occur at the same time when water is subjected to
A) decreased temperatures.
B) decreased atmospheric pressure.
C) increased temperatures.
D) increased atmospheric pressure.
Answer:
Which of the following involves passion, talent, and intelligence?
A) art
B) literature
C) music
D) science
E) all of the above
Answer:
Identical waves superimposed in phase produce a wave of increased
A) amplitude.
B) frequency.
C) wavelength.
D) all of the above
E) none of the above
Answer:
As an air parcel moves up the side of a mountain, it
A) expands and cools.
B) expands and warms.
C) compresses and cools.
D) compresses and warms.
Answer:
As entropy in a system increases, energy within the system
A) becomes more ordered.
B) becomes less ordered.
C) reaches equilibrium.
D) moves toward destruction.
Answer:
Heavy rains in a desert environment can result in
A) flash floods.
B) cross-bedding.
C) intensified dune migration.
D) floodplains.
Answer:
If Earth's mass somehow decreased with no change in its radius, your weight would
A) decrease also.
B) increase.
C) remain the same.
Answer:
Which of the following professions would likely have the highest occupational
exposure to radiation per year?
A) airline pilot
B) quarterback for the Denver Broncos
C) center for the L.A. Lakers
D) deep sea diver
E) lifeguard
Answer:
In raising a 5000-N piano with a pulley system, for every 1 m of rope pulled down, the
piano rises 0.1 m. Ideally, this means the force needed to lift the piano is
A) 50 N.
B) 500 N.
C) 5000 N.
D) not enough information
Answer:
What subatomic particle by itself is least affected by electromagnetic radiation?
A) the electron
B) the proton
C) the neutron
D) the nucleus
Answer:
If the Sun suddenly became less massive, what would happen to Earth's orbit?
A) Spacetime around the Sun would become flatter, and the Earth, with its current
momentum, would exit its orbit around the Sun.
B) Spacetime around the Sun would become less flat, and the Earth would go plunging
into the Sun.
C) The Earth's orbital distance from the Sun would increase correspondingly.
D) The Earth's orbital distance from the Sun would decrease correspondingly.
Answer:
The Big Bang
A) took place within space.
B) marked the beginning of space and time.
C) occurred as a result of disturbances within the Large Magellenic cloud.
D) took place within time.
Answer:
Air temperature can increase by the process of
A) moisture condensation.
B) contact with cold surfaces.
C) moisture evaporation.
D) all of the above
Answer:
In a folded sequence of rocks we find younger rocks at the axis of the fold and older
rocks away from the fold axis. The fold is
A) called a syncline.
B) called an anticline.
C) plunging.
D) tilted.
Answer:
Both a radio wave and light wave have identical
A) speeds.
B) wavelengths.
C) frequencies.
D) all of the above
E) none of the above
Answer:
If a neutral element has the following chemical symbol, how many electrons does it
have?
O
A) 6
B) 18
C) 12
D) 24
E) none of the above
Answer:
Daylight and nighttime hours are equal
A) during the summer and winter solstices.
B) during the equinoxes.
C) in mid-June and mid-December.
D) during the equinoxesmid-September and mid-March.
Answer:
Magma that solidifies before reaching Earth's surface is called
A) intrusive igneous rock.
B) plutonic rock.
C) a pluton.
D) all of the above.
Answer:
The image below shows a beam of radiation passing between two electrically charged
plates.
Which of the following provides the minimum amount of protection you need to block
the following form of radiation?
beta
A) lead suit
B) suntan lotion
C) thick leather
D) T-shirt
E) none of the above
Answer:
