Our local group consists of
A) 1 major galaxy.
B) 2 major galaxies.
C) 3 major galaxies.
D) about a dozen major galaxies.
Answer:
The source of an atom’s electronegativity is the
A) repulsive force occurring among electrons within the same shell.
B) repulsive force occurring between electrons within neighboring shells.
C) positively charged atomic nucleus.
D) kinetic energy electrons have orbiting the nucleus.
Answer:
Whirl a rock at the end of a string and it follows a circular path. If the string breaks, the
rock tends at first to
A) continue in a circular path.
B) follow a straight-line path.
C) spiral inward.
D) fall straight downward.
Answer:
A flask half filled with water is on a weighing scale. If you suspend a stone by a string
into the water the scale reading will be
A) less.
B) the same.
C) greater.
Answer:
Which atom is largest?
A) Rb
B) K
C) Na
D) Li
E) H
Answer:
A strong temperature gradient contributes to steep pressure gradients and this can create
very strong
A) latitudes.
B) winds.
C) doldrums.
D) frictional force.
Answer:
One of the results of wave refraction is that
A) wave energy is concentrated at headlands that project into the water.
B) wave energy is concentrated in the recessed parts of the coast between headlands.
C) sediment is deposited in the vicinity of headlands, making them larger.
D) wave energy is dissipated before the waves reach the shoreline.
Answer:
How would connecting iron with a wire to a piece of metal like copper, which
undergoes reduction very easily, affect the rate at which the iron corrodes?
A) It would increase the rate of corrosion.
B) It would decrease the rate of corrosion.
C) The rate would stay the same.
D) Rates are only affected by temperature.
E) none of the above
Answer:
Food in boiling water cooks slower in high-altitude locations. If you increase the stove
temperature under the pot the food will cook
A) faster.
B) slower.
C) neither of these
Answer:
A balloon will stick to a wooden wall if the balloon is charged
A) negatively.
B) positively.
C) either of these
D) none of the above
Answer:
Boron has primarily two isotopes, one with an atomic mass of 11 amu and another with
an atomic mass of 10 amu. If the abundance of the boron atom with a mass of 11 amu is
18.9 percent and the abundance of the other isotope is 81.1 percent, what would be the
average mass of the boron atom?
A) 10.19 amu
B) 11 amu
C) 10 amu
D) 10.81 amu
E) not enough information given
Answer:
If glass expanded more than mercury in a thermometer, then with rising temperature the
column of mercury would
A) rise.
B) not change.
C) fall.
Answer:
Which of the following elements will most likely not form an ion at all?
A) Na
B) O
C) Ar
D) Mg
E) Br
Answer:
When air gains speed in sweeping across a rooftop its internal pressure is
A) reduced.
B) unaffected.
C) increased.
Answer:
The sky is the deepest blue
A) just before a rainstorm.
B) during a rainstorm.
C) just after a rainstorm.
D) when the air is humid.
E) just before sunset.
Answer:
The following set of redox reactions takes place as shown.
Container A Container B
Fe → Fe+2 + 2e- Cu+2 + 2e- → Cu
If you had two containers filled with the ion solution described above with a wire
connecting a piece of iron (in container A) and a piece of copper (in container B) and a
salt-bridge connecting the two containers, describe what happens.
A) A little bit of iron is converted into iron ions and a little bit of copper ion is
converted into copper metal.
B) All of the iron is transformed into iron ions and all of the copper is transformed into
copper ions.
C) All of the iron is transformed into iron ions and all of the copper ions are
transformed into copper metal.
D) All of the iron ions are transformed into iron metal and all of the copper is
transformed into copper ions.
E) All of the iron ions are transformed into iron metal and all of the copper is
transformed into copper metal.
Answer:
Why was it so important to survey the ocean floors?
A) People had a general curiosity of our planet.
B) To get a better understanding of polar wandering.
C) To know the topography and possible hiding places for submarines.
D) To find pirate treasure.
Answer:
During the peak of a total annular eclipse, the image of the Sun cast onto some white
paper is
A) a circle.
B) a crescent.
C) a large white spot.
D) not going to be seen.
Answer:
Metals are both good heat and electrical conductors due to
A) similar thermal and electrical conductive properties.
B) looseness of outer electrons in metal atoms.
C) relatively high densities of metals.
D) high elasticity of metals.
E) ability of metals to transfer energy easily.
Answer:
If all the molecules of a body remained part of that body, would the body have any
odor?
A) Yes, but only if that body is sweating.
B) No, because there would be no molecules traveling to our nose.
C) Yes, because it would still release photons.
D) No, because it would no longer be what it was.
Answer:
An air mass with circulatory motion is called
A) convectional.
B) orographic.
C) adiabatic.
D) frontal.
Answer:
The most common rock forming minerals are composed of predominantly eight
elements. These minerals are the
A) silicates, carbonates, oxides, sulfides, and sulfates.
B) silicates, sulfides, and oxides.
C) silicons, borates, oxides, sulfides, and carbonates.
D) sulfates, oxides, and carbonates.
Answer:
All of the following occur during metamorphism except
A) melting.
B) recrystallization.
C) interaction with chemical fluids.
D) changes in composition.
Answer:
Which of the following solutions is the most concentrated?
A) 0.5 L of a 3 molar solution
B) 3.0 L of a 0.5 molar solution
C) 2.0 L of a 1 molar solution
D) 0.5 L of a 1 molar solution
E) 2.0 L of a 2 molar solution
Answer:
The rapid change of a magnetic field induces
A) an electric field.
B) a stronger magnetic field.
C) both of these
D) none of the above
Answer:
The wind blows in response to
A) pressure differences.
B) Earth’s rotation.
C) temperature differences.
D) pressure and temperature differences.
Answer:
The birth of the San Andreas Fault corresponds to the collision of
A) the Pacific Plate and the Hawaiian islands.
B) the Pacific ridge system and North America.
C) the movement of the Pacific Plate over a turbulent zone.
D) India and Eurasia.
Answer:
If a ball rolls down an inclined plane and gains 4 m/s each second it rolls, its
acceleration is
A) one half of 4 m/s.
B) one half of 4 m/s2.
C) 4 m/s2.
D) 10 m/s2.
Answer:
How many moles of H2 bonds are broken if you react nitrogen with hydrogen according
to the following reaction?
N2 + 3H2 → 2 NH3
A) 6
B) 2
C) 3
D) 1
E) 8
Answer:
Treating water with chlorine or ozone during water purification is an example of
A) a physical change.
B) a chemical reaction.
C) ion exchange.
D) a solid dissolving in a liquid.
E) only a and b
Answer:
How necessary is soap for removing salt from your hands?
A) Soap is necessary because it has both a polar and nonpolar end to interact with the
positive and negative ions in the salt.
B) Soap is necessary because it creates a film on the surface of your skin, shielding it
from interacting with the ionic charges of the salt.
C) Soap is not at all necessary for removing salt from your hands. The strong ion-dipole
interactions between fresh water and the salt are most sufficient to lift the salt away
from your hands.
D) Soap is not necessary because there are no electrical charges on the skin of your
hands for the salt to interact with.
Answer: