What is the name for the following polyatomic ion?
PO4
-3
A) phosphate
B) phosphorus oxide
C) phosphinate
D) trioxo phosphoride
E) potassium
Answer:
The white light from the Sun is a
A) compliment of the surrounding blue sky.
B) composite of light of all the visible frequencies.
C) mixture of selected frequencies of light.
Answer:
During the Cretaceous period, Earth experienced a worldwide rise in sea level caused
by
A) melting of glacial ice.
B) the thermal expansion of the crustal surface and the breakup of Pangaea.
C) subduction of the seafloor.
D) subduction of continental land masses.
Answer:
How is electrolysis different from what is going on chemically inside a battery?
A) They are the same process, just reversed.
B) Electrolysis does not use electrons.
C) Electrolysis only uses electrons from a cathode.
D) You cannot make pure compounds with electrolysis.
E) You do not produce a chemical change in electrolysis.
Answer:
A planetary nebula arises from
A) the remains of a solar atmosphere.
B) planetary accretion.
C) a black hole.
D) the gravitational attraction of interstellar dust.
Answer:
If water at 20C slightly increases in temperature, the water
A) expands.
B) contracts.
C) remains the same.
Answer:
A baseball weighs 1.5 N on Earth. Another type of ball weighs 1.5 N on the Moon. The
ball with the greater mass is the
A) baseball.
B) other type of ball.
C) same for each.
D) not enough information
Answer:
Voltage is most similar to
A) pressure.
B) current.
C) resistance.
D) all of the above
E) none of the above
Answer:
Why can’t the elements of a compound be separated from one another by physical
means?
A) They are too homogeneous when found within a compound.
B) Their atoms are too tightly bound to one another.
C) Elements found within a compound tend to be inert.
D) Elements tend not to be soluble in water.
Answer:
Voltage produced by a generator alternates because
A) it produces pulses of current.
B) the magnetic field that produces it alternates.
C) alternations in the mechanical energy input.
D) effectively it is an ac motor in reverse.
E) the current it produces alternates.
Answer:
According to the following balanced chemical equation, if you want to generate two
moles of H2O, how many moles of O2 do you need?
2 H2 + O2 → 2 H2O
A) 1
B) 2
C) 1/2
D) 4
E) 6.022 1023
Answer:
The numerical dates associated with events on the geologic time scale were determined
by
A) relative dating.
B) superposition.
C) radiometric dating.
D) fossil assemblages through time.
Answer:
A radio signal emitted from Earth would take about
A) 4 years to leave our galaxy.
B) 20,000 years to leave our galaxy.
C) 80,000 years to leave our galaxy.
D) 100,000 years to leave our galaxy.
Answer:
In the above diagram, which atom is oxidized, the darker colored atom or the lighter
colored atom?
A) Both of the atoms are oxidized.
B) Neither of the atoms is oxidized.
C) Only the darker colored atom is oxidized.
D) Only the lighter colored atom is oxidized.
Answer:
Of the three agents of erosionwater, wind and icethe one with the ability to move only
the smallest particles is
A) ice.
B) water.
C) turbulent water.
D) wind.
Answer:
In a battery, the following oxidation-reduction reactions are taking place:
Mn2O3 + ZnO → 2 MnO2 + Zn
What is being formed at the cathode?
A) Zn
B) ZnO
C) MnO2
D) Mn2O3
E) none of the above
Answer:
Most of Earth’s fresh water is located in
A) polar ice caps and glaciers.
B) groundwater.
C) rivers, lakes, and streams.
D) the atmosphere.
Answer:
How would you describe the volume of the following object?
the amount of water in a swimming pool
A) microscopic
B) macroscopic
C) submicroscopic
D) all of the above
E) none of the above
Answer:
Which of the following is a scientific statement?
A) the Moon is made of green cheese
B) matter is filled with undetectable particles
C) there are parts of the universe that will never be found by humans
D) none of the above
Answer:
A circus diver drops from a high pole into water far below. When he is half-way down
A) his potential energy is halved.
B) he has gained an amount of kinetic energy equal to half his initial potential energy.
C) his kinetic and potential energies are equal.
D) all of the above
E) none of the above
Answer:
A star’s color tells us
A) how much energy a star produces.
B) its surface temperature.
C) its rotational speed.
D) both how much energy it produces and its surface temperature.
Answer:
The atmospheric condition at a particular location at a particular moment in time is
called
A) weather.
B) climate.
C) average temperature.
D) average precipitation level.
Answer:
If you eat metallic sodium or inhale chlorine gas, you stand a strong chance of dying.
Let these two elements react with each other, however, and you can safely sprinkle the
compound on your popcorn for better taste. What is going on?
A) After these two elements react they lose the potential energy to cause harm.
B) All elements are inherently dangerous.
C) Sodium and chlorine from the elemental form is more concentrated than the sodium
and chlorine we get from sodium chloride.
D) Sodium chloride has nothing in common with sodium and chlorine.
Answer:
Which of the following might best describe the product obtained from soap and hard
water (i.e., soap scum)?
A) a
B) b
C) c
D) d
E) none of the above
Answer:
The net force on any object moving at constant velocity is
A) zero.
B) 10 meters per second squared.
C) equal to its weight.
D) about half its weight.
Answer:
What is the mass of a water molecule, O, in grams?
A) 18 grams
B) 1.661 grams
C) 2.99 10-23 grams
D) none of the above
Answer:
The direction of ice flow can be determined by
A) striations, roches moutonnes, and drumlins.
B) striations, roches moutonnes, and drumsticks.
C) moraines, drift, and till.
D) sled tracks, igloos, and drumsticks.
Answer:
We say we are looking back in time when we are looking at the stars because
A) we see stars as they once were when their light reaches us.
B) space curves, we are actually looking at the past when we look in the night sky.
C) stars are emitting immense radiation, we are seeing processes that have already
happened.
D) Earth’s atmosphere bends and distorts their light.
Answer:
Which of the above molecules contains a carbonyl group?
A) a
B) all but a
C) all but b
D) c
E) all but d
Answer:
Electric potential is the ratio of electric energy to the amount of electric
A) current.
B) resistance.
C) charge.
D) voltage.
E) none of the above
Answer:
A bar magnet that holds a chain of nails illustrates
A) magnetic field displacement.
B) magnetic induction.
C) electromagnetic induction.
Answer:
Warm air aloft is associated with
A) low air pressure aloft.
B) warm summer nights.
C) high surface pressure.
D) high air pressure aloft.
Answer: