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Two lamps, a thick-filament one and a thin-filament one, are connected in parallel to a
battery. The current is greater in the lamp with the
A) thick filament.
B) thin filament.
C) same in each
Answer:
The force of air impact upon the sail of a boat is greater if the air
A) bounces upon impact.
B) encounters the sail head-on.
C) encounters the sail at a grazing angle.
Answer:
When an iron ring is heated, the hole becomes
A) smaller.
B) larger.
C) neither
Answer:
What property of alloys make them ideal for developing new materials?
A) The characteristics of the material change depending on how much of each
component is present.
B) Alloys are very rigid and are extremely resistant to chemical decomposition.
C) The size of the atoms involved is directly related the electrical conductivity.
D) all of the above
E) none of the above
Answer:
An electric razor in Europe completes 50 vibrations in 1 s. The frequency of these
vibrations is
A) 50 Hz with a period of 1/50 s.
B) 1/50 Hz with a period of 50 s.
C) 50 Hz with a period of 50 s.
D) 1/50 Hz with a period of 1/50 s.
Answer:
The Mohorovicic discontinuity marks the change in rock density elasticity between the
A) inner and outer core.
B) core and the mantle.
C) mantle and the crustal surface.
D) asthenosphere and lithosphere.
Answer:
The rate of evaporation over the very salty Mediterranean is
A) less than the rate of precipitation.
B) greater than the rate of precipitation.
C) equal to the rate of precipitation.
D) greater than the influx of fresh water from streams and rivers.
Answer:
Which statement best describes a compound?
A) a material that is made up of a combination of atoms bonded together
B) a mixture of more than one element
C) a mixture of atoms
D) a material that is made up of a single type of atom
E) none of the above
Answer:
Foliation in metamorphic rocks is due to directed stress, which causes elongated
minerals to orient themselves
A) in parallel planes with the face of each plane parallel to the direction of maximum
stress.
B) in alignment.
C) so that smaller crystals precede larger crystals.
D) in parallel planes perpendicular to the direction of maximum stress.
Answer:
Most of Earth's water is in the
A) oceans.
B) polar ice caps.
C) rivers, lakes, and stream.
D) ground.
Answer:
Which of the following is not a presumed cause of ice ages?
A) The arrangement of continents around the globe.
B) The amount of sunlight being reflected back into space.
C) The geometry of Earth's rotation on its axis and revolution around the Sun.
D) Volcanic eruptions blocking the sunlight with clouds.
Answer:
Boiling is the process of evaporation
A) beneath the water surface.
B) at its extreme.
C) that cools instead of warms.
Answer:
When the mineral assemblage of a rock changes due to high temperature and pressure,
the rock undergoes
A) crystal deformation.
B) secondary metamorphism.
C) recrystallization.
D) all of the above
Answer:
If a charging rhinoceros has momentum, it must also have
A) potential energy.
B) kinetic energy.
C) work.
D) all of the above
Answer:
The air that a scuba diver breathes is pressurized to counteract the pressure exerted by
the surrounding water. Under these conditions, excessive amounts of nitrogen dissolves
in bodily fluids, such as blood. If the diver ascends to the surface too rapidly, the
excessive nitrogen bubbles out of the bodily fluidsmuch like carbon dioxide bubbles out
of a soda immediately after its has been opened. This results in a painful and potentially
lethal medical condition known as the bends. Why does breathing a mixture of helium
and oxygen rather than air help divers to avoid getting the bends?
A) Oxygen and helium have stronger attractions for each other than they do for the
blood, so less helium will be dissolved in the blood and to cause the bends.
B) The helium is less soluble in the bodily fluids and so less dissolves for a given
pressure. Upon decompression, there is less helium to "bubble out" and cause potential
harm.
C) The nitrogen in the blood will bind to helium, and so will be exhaled rather than
being stuck in the blood.
D) Helium is a smaller molecule than nitrogen, so when it bubbles out of solution, it is
less painful and less harmful to the body.
Answer:
The idea of uniformitarianism suggests that
A) the natural laws that operate today are different than those that have operated in the
past.
B) sediments are laid down layer upon layer with younger layers always on the top.
C) the processes and natural laws that operate today have been valid throughout
geologic time.
D) all rocks layers are originally uniform.
Answer:
The rate at which energy is transferred is
A) power.
B) electromagnetic induction.
C) transformation.
D) none of the above
Answer:
Blow on your hand and you feel the warmth of your breath. Pucker your lips so your
breath expands as you blow and your breath is
A) still warm.
B) cool.
C) neither of these
Answer:
The theory of continental drift is supported by paleoclimatic data, the jig-saw fit of the
continents
A) paleontology, and paleomagnetic data.
B) and seafloor spreading.
C) transform boundaries, and paleontology.
D) at their continental margins, and paleontology.
Answer:
Similar to the crystallization of silicate minerals, the crystallization of evaporite
minerals occurs in a step-by-step process. The evaporite minerals that are the most
difficult to dissolve
A) precipitate last.
B) precipitate first followed by the minerals that dissolve more easily.
C) have the lowest solubility and are the last to precipitate.
D) have the highest solubility and are the first to precipitate.
Answer:
Cold damp weather along the eastern coast of the United States is most likely caused by
a
A) continental tropical air mass.
B) continental polar air mass.
C) maritime tropical air mass.
D) maritime polar air mass.
Answer:
What is the name of the following compound?
SF3
A) sulfur trifluoride
B) sulfur fluoride
C) trifluorosulphide
D) fluorine sulphide
E) none of the above
Answer:
Which of the following molecules is most likely to show a dipole-dipole interaction?
A) CH3OH
B) CH3SH
C) CH4
D) H-C C-H
E) A and B
Answer:
The electric field lines between a pair of equal and opposite charges are
A) directed from positive to negative.
B) more concentrated closer to the charges.
C) vectors, with patterns resulting from the inverse-square law.
D) all of the above
E) none of the above
Answer:
The magnetic field lines about a straight current-carrying wire are
A) circular.
B) radial.
C) elliptical.
D) spiral.
Answer:
Convection in Earth's mantle is attributed to
A) sinking cold oceanic crust.
B) gravity and heat flow.
C) conduction of heat from Earth's core.
D) temperature differences between continental and oceanic crust.
Answer:
An efficient step-up transformer increases
A) power.
B) energy.
C) both of these
D) none of the above
Answer:
The upper mantle can be divided into two portions, the
A) asthenosphere (lower zone of the upper mantle) and part of the lithosphere (the top
zone of the upper mantle).
B) asthenosphere (top zone of the upper mantle) and the lithosphere (the lower upper
mantle).
C) Moho and the lithosphere.
D) continental mantle and the oceanic mantle.
Answer:
It takes 10 J of work to push a charge into an electric field. Relative to its starting
position it has gained a potential energy of
A) less than 10 J.
B) 10 J.
C) more than 10 J.
D) none of the above
Answer:
The Andes and the Sierra Nevada Mountains began to form during the Mesozoic due to
A) the formation of the Atlantic Ocean.
B) subduction of Pacific oceanic crust beneath North and South American continental
crust.
C) rifting between North America and Africa.
D) meteorite bombardment in Mexico.
Answer:
Which of the following is not associated with a cold front?
A) thunderstorms
B) drop in air pressure
C) gradually rising warm air
D) clear skies behind the front
Answer:
