When an apple falls to the ground, momentum is transferred to the ground. The
momentum absorbed by the ground is
A) negligible compared to the momentum of the apple.
B) greater if the apple bounces.
C) greater than that of the apple whether or not bouncing occurs.
D) none of the above
Answer:
A greater gravitational field causes time to
A) speed up.
B) slow down.
C) fluctuate.
D) Gravity has no measurable effect on time.
Answer:
When you purchase a water pipe in a hardware store, water is not included. When you
purchase copper wire, electrons
A) must be supplied by you, just as water in a water pipe.
B) already exist in the wire.
C) may fall out, which is why wires are insulated.
D) none of the above
Answer:
At the end of 2 seconds an apple freely falling from rest has a speed of
A) 1 m/s.
B) 5 m/s.
C) 10 m/s.
D) more than 10 m/s.
Answer:
Walking along a dry river bed, you find a conglomerate rock. What can you say about
the rock’s relative age?
A) The rock formed in place, at the river bed.
B) The rock and mineral fragments that make up the rock are older than the actual rock.
C) The rock is relatively young since it contains lots of small rock fragments.
D) The rock and mineral fragments that make up the rock are younger than the actual
rock.
Answer:
On a floodplain, the sediment grains away from the main river channel are
A) coarse-grained sand and gravels.
B) fine-grained silts and clays.
C) well-sorted and well-rounded sand particles.
D) all of these
Answer:
The discovery of electromagnetic induction is credited to
A) Joseph Henry in America.
B) Michael Faraday in England.
C) both of these
D) none of the above
Answer:
If you walk toward a mirror at a certain speed, the relative speed between you and your
image is
A) half your speed.
B) your speed.
C) twice your speed.
D) none of the above
Answer:
On the H-R diagram our Sun is a
A) white dwarf.
B) star of average luminosity and temperature.
C) red supergiant.
D) relatively bright, blue star.
Answer:
What does the following element description actually mean?
hydrogen-2
A) a hydrogen with one neutron and one proton
B) a hydrogen with two neutrons
C) a hydrogen with two protons
D) a molecule of hydrogen gas
E) two hydrogen atoms
Answer:
In the Northern Hemisphere, cyclones rotate ________; whereas an anticyclone rotates
________.
A) counterclockwise around a low pressure center; clockwise around a high pressure
center
B) clockwise around a low pressure center; counterclockwise around a high pressure
center
C) counterclockwise around a high pressure center; clockwise around a low pressure
center
Answer:
When two light bulbs are connected in parallel to a battery, the electric resistance that
the battery senses is
A) greater than the resistance of either bulb.
B) less than the resistance of either bulb.
C) none of the above
Answer:
At 10C, which is more concentrateda saturated solution of sodium nitrate, NaN , or a
saturated solution of sodium chloride? (See figure shown above.)
A) At 20C a saturated solution of sodium nitrate, NaN , is more concentrated than a
saturated solution of sodium chloride, NaCl.
B) At 10C a saturated solution of sodium chloride, NaCl, is more concentrated than a
saturated solution of sodium nitrate, NaN .
C) At 10C a saturated solution of sodium nitrate, NaN , is more concentrated than a
saturated solution of sodium chloride, NaCl.
D) At 25C a saturated solution of sodium nitrate, NaN , is more concentrated than a
saturated solution of sodium chloride, NaCl.
Answer:
The shortest plane mirror in which you can see your entire image is
A) half your height.
B) 3/4 your height.
C) 1/3 your height.
D) equal to your height.
E) dependent on your distance from the mirror.
Answer:
Direct current is normally produced by a
A) battery.
B) generator.
C) both of these
D) neither of these
Answer:
When two bulbs are connected in series to a battery, the electric resistance that the
battery senses is
A) greater than the resistance of either bulb.
B) less than the resistance of either bulb.
C) none of the above
Answer:
Sodium hydroxide, NaOH, is a strong base, which means that it readily accepts
hydrogen ions. What products are formed when sodium hydroxide accepts a hydrogen
ion from a water molecule?
A) water and sodium hydroxide
B) sodium hydroxide and hydronium ions
C) sodium ions and hydronium ions
D) sodium ions and water
Answer:
A bird sitting on the limb of a tree is moving about 30 km/s with respect to the Sun. If
the bird takes 1 second to drop down to a worm below, the worm would be 30 km
downrange from the bird when it reached the ground. This faulty reasoning is best
countered with Newton’s
A) law of inertia.
B) law of gravity.
C) laws of motion.
D) none of the above
Answer:
A bubble of air released from the bottom of a lake
A) rises to the top at constant volume.
B) becomes smaller as it rises.
C) becomes larger as it rises.
D) alternately expands and contracts as it rises.
E) none of the above
Answer:
When the alignment of the Sun, the Moon, and Earth produce a solar eclipse, the body
between the other two is the
A) Sun.
B) Moon.
C) Earth.
Answer:
Define the Coriolis force and explain how each of the following influences it: (a)
rotation of the Earth; (b) wind speed; (c) latitude.
Answer:
Suppose at the surface of the Earth a person can do 20 pushups. In a spaceship far away
from any gravitational influence, accelerating at g, the same person could do
A) less than 20 pushups.
B) 20 pushups.
C) more than 20 pushups.
Answer:
A quick jerk on a sheet of paper beneath a box of cereal doesn’t topple the box, which
best illustrates that
A) the box has no acceleration.
B) there is an action-reaction pair of forces.
C) gravity tends to hold the box secure.
D) the box has inertia.
Answer:
A major source of chlorine gas, , is from the electrolysis of brine, which is
concentrated salt water, What is the sign of the electrode where the chlorine
gas is formed? Is it negative or positive?
A) Positive, since the chloride ions lose electrons to form chlorine molecules.
B) Negative, since the chlorine gas needs to deposit electrons to form chloride ions.
C) Neither, since chlorine gas is a neutral molecule, there is not electrode attraction.
D) Both, since the chloride ions from NaCl (aq) are attracted to the positive electrode to
form chlorine molecules while the produced chlorine gas molecules move to deposit
electrons at the negative electrode.
Answer:
How is it possible for an element to decay “forward in the periodic table”that is, to
decay to an element of higher atomic number?
A) When the decay is instigated by a collision with a proton.
B) As a beta particle is released, a neutron transforms into a proton.
C) This only occurs during nuclear fusion.
D) It is not possible. Radioactive decay always results in an isotope with the same or
lower atomic number.
Answer:
How many grams of gallium are there in a 145 gram sample of gallium arenside, GaAs?
A) 74.9 g
B) 69.7 g
C) 145 g
D) 6.02 1023 g
Answer:
Fresh water leaves the ocean by evaporation,
A) and seawater freezing.
B) precipitation, and runoff.
C) sublimation, seawater freezing.
D) and formation of ice.
Answer:
Clouds occur when moist air is cooled by
A) expansion when it rises.
B) compression when it rises.
C) expansion when it falls.
D) compression when it falls.
Answer:
The migration of humans from Asia to North America was aided by
A) herds of woolly mammoths.
B) the collision of the Pacific Plate with the North American Plate.
C) land bridges due to lowered sea level.
D) glacial moraines that extended across the Bering Strait.
Answer:
A certain bulb with a resistance of 95 ohms and labeled “150 W” is designated for use
in a
A) 120-V circuit.
B) 240-V circuit.
C) either
D) not enough information
Answer:
Orographic lifting occurs as
A) two air masses meet head on.
B) air moves over a warm ground surface.
C) an air mass moves into a rain shadow.
D) an air mass is pushed over a mountain range.
Answer:
Water being purified using aluminum salts and a base is an example of
A) a physical separation.
B) a chemical reaction.
C) an acid-base reaction.
D) a chemical separation.
E) none of the above
Answer:
An inverted empty jar is pushed downward into water so that trapped air inside can’t
escape. As it is pushed deeper, the buoyant force on the jar
A) increases.
B) decreases.
C) remains the same.
Answer:
Three resistors take the shape of a triangle, one resistor in each leg. Resistance in one
leg is 4 ohms, in a second leg is 6 ohms, and third leg is 10 ohms. A measurement of
resistance across the 10-ohm resistor will show the equivalent resistance to be
A) 1.4 ohms.
B) 5 ohms.
C) 6.7 ohms.
D) greater than 6.7 ohms.
Answer: