The volume of water displaced by a floating 20-ton boat is
A) 20 cubic meters.
B) the volume of 20 tons of water.
C) the volume of the boat.
D) depends on the shape of the ship’s hull.
E) none of the above
Answer:
An airplane flying overhead drops a care package directly over Mike at rest in his
Corvette. Neglecting air resistance, the package will land
A) behind Mike.
B) upon Mike and his Corvette.
C) well ahead of Mike and his Corvette.
Answer:
During osmosis
A) the water moves into the concentrated solution faster than it leaves.
B) the ions move into the concentrated solution faster than they leave.
C) the water moves more slowly into the concentrated solution than it leaves.
D) the ions move into the concentrated solution slower than they leave.
E) all of the above
Answer:
How many moles of sugar, C12H22O11, are there in 200. grams?
A) 0.585 moles
B) 68,400 moles
C) 1.71 moles
D) 0.684 moles
Answer:
The systematic names for water, ammonia, and methane are dihydrogen monoxide,
O; trihydrogen nitride, N ; and tetrahydrogen carbide, C . Why do most people,
including chemists, prefer to use the common names for these compounds?
A) The common names are shorter and easier to pronounce.
B) These compounds are encountered frequently.
C) The common names are more widely known.
D) all of the above
Answer:
Over withdrawal of groundwater causes ground subsidence in areas
A) of karst topography.
B) underlain by unconsolidated sediments.
C) underlain by consolidated sediments.
D) all of these
Answer:
If your automobile runs out of fuel while driving, the engine stops. You don’t come to
an abrupt stop because of
A) inertia.
B) gravity.
C) resistance.
D) the principle of continuation.
Answer:
More toll booths on a highway is analogous to a
A) series circuit.
B) parallel circuit.
C) complex combination of both of these
Answer:
The process of boiling water tends to
A) warm the water.
B) cool the water.
C) both of these
D) none of the above
Answer:
The density of a submarine cruising beneath the ocean surface has the same density as
A) a crab.
B) iron.
C) a floating submarine.
D) ocean water.
E) none of the above
Answer:
The most massive subatomic particle is the
A) electron.
B) proton.
C) neutron.
D) nucleus.
Answer:
The lower atmosphere is directly warmed
A) by incoming solar radiation.
B) by the emission of terrestrial radiation.
C) from the weight of the atmosphere above.
D) by the absorption of terrestrial radiation.
Answer:
A positive and a negative charge near each other are released. As they move, the force
on each particle
A) increases.
B) decreases.
C) stays the same.
Answer:
When sound travels faster higher in the air than it does closer to the ground, sound
bends
A) upward.
B) downward.
C) neither of these
Answer:
How many different elements are in the compound C6H12O6?
A) 3
B) 6
C) 24
D) All of the elements are the same.
Answer:
Glaciers lose mass by
A) crevassing.
B) calving.
C) melting and calving.
D) melting and crevassing.
Answer:
The average frequency of radiant energy is directly proportional to the
A) Celsius temperature of the emitter.
B) Fahrenheit temperature of the emitter.
C) kelvin temperature of the emitter.
D) all of the above
E) none of the above
Answer:
Which of the following did Alfred Wegener not use to support his theory of continental
drift?
A) paleoclimate data
B) similar fossils on widely separated continents
C) paleomagnetic data
D) similar rocks on widely separated continents
Answer:
An huge bear and a leaf fall from a tree through the air to the ground below. The force
of air resistance is greater on the
A) bear.
B) leaf.
C) same on each
Answer:
Heat energy is measured in units of
A) degrees.
B) joules.
C) calories.
D) both joules and calories.
Answer:
An individual carbon-oxygen bond is polar. Yet carbon dioxide, C , which has two
carbon-oxygen bonds, is nonpolar because
A) the molecule has an even number of electrons.
B) it has a greater symmetry.
C) the electron-pulls of the two oxygen atoms are equal and opposite.
D) Two of the above are reasonable.
Answer:
A bucket of cement is raised by a rope at constant speed at a construction site.
Compared with the force of gravity on the bucket, the upward force supplied by the
rope is
A) greater.
B) equal.
C) less.
Answer:
The outer core is thought to be molten because it
A) is denser than the inner core.
B) will not transmit P-waves.
C) is made of iron and nickel.
D) will not transmit S-waves.
Answer:
Each night you measure your height just before going to bed. When you arise each
morning, you measure your height again and consistently find that you are 1 inch taller
than you were the night before but only as tall as you were 24 hours ago! Is what
happens to your body in this instance best described as a physical change or a chemical
change?
A) chemical change because it involves your body
B) physical change because it readily reverses
C) chemical change because it involves changes in your bone structure
D) physical change because water expands as it freezes
Answer:
When a hydraulic press is properly used it is capable of multiplying force input.
A) true
B) false
C) true only in special cases, energy as well
Answer:
What event will eventually move an average star off the main sequence of the H-R
diagram?
A) running out of hydrogen, causing gravitational influx, resulting in core temperatures
high enough to begin fusing helium
B) surface cooling due to hydrogen loss
C) solar wind storms
D) its drift through space due to the gravitational attraction of neighboring giant stars
Answer:
The maximum sediment load of a stream depends on
A) average stream speed.
B) channel geometry.
C) stream gradient.
D) stream discharge.
Answer:
When a steaming-hot aluminum soda can is quickly inverted into a pan of water, the
can is dramatically crushed due to a rapid decrease in internal pressure caused by
A) contact with the cooler water.
B) sudden slowing of internal air and steam molecules.
C) condensation of steam inside.
D) reduced thermal energy.
E) rapid conduction of heat to the relatively cool water.
Answer:
Which is smaller?
A) a local group
B) a local supercluster
Answer:
A “weightless” astronaut in an orbiting space vehicle is
A) shielded from Earth’s gravitational effects.
B) beyond the pull of gravity.
C) without a support force.
D) all of the above
E) none of the above
Answer:
Deuterium oxide, O, and water, O, have the same chemical structure and differ
only in that O possesses the deuterium isotope of hydrogen, whereas water possesses
the protium isotope. Deuterium oxide, also known as “heavy water,” is 11 percent
heavier than water. Might you expect its boiling temperature also to be about 11 percent
greater? Why or why not?
A) The mass of the molecules has a far greater influence on the boiling temperature of
the substance than does the polarity of the molecules, so O boils at a higher
temperature.
B) Since they have the same chemical structures, there is a similar molecular attraction
between the molecules, so their boiling temperatures are similar.
C) Since deuterium is radioactive, it breaks down more easily, so it has a lower boiling
temperature than water.
D) Since boiling temperature is a measure of the speed of a molecule, the heavier
molecules move slower and thus have a higher boiling temperature.
Answer: