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Near our planet Earth are
A) cosmic rays.
B) magnetic fields.
C) both of these
D) none of the above
Answer:
The isotope lithium-7 has a mass of 7.0160 atomic mass units, and the isotope lithium-6
has a mass of 6.0151 atomic mass units. Given the information that 92.58 percent of all
lithium atoms found in nature are lithium-7 and 7.42 percent are lithium-6, calculate the
atomic mass of lithium, Li (atomic number 3).
A) 7.0160 amu
B) 6.942 amu
C) 6.495 amu
D) 13.031 amu
Answer:
Bree dips a pair of prongs onto a water surface and produces waves. When she dips
more frequently the resulting waves
A) have shorter wavelengths.
B) remain the same in wavelength.
C) have longer wavelengths.
D) move faster.
E) none of the above
Answer:
Which of the following rocks would be the first to weather in a humid climate? Which
would be the last? Defend your answers. (a) granite (b) sandstone (c) limestone (d)
halite
Answer:
Earth pulls on the Moon. Similarly the Moon pulls on Earth, evidence that
A) Earth and Moon pull on each other.
B) Earth's and Moon's pulls comprise an action-reaction pair.
C) both of the above
D) none of the above
Answer:
The orbital motion of a wave is greatest (has the largest "diameter") at
A) the wave base.
B) about one-half the depth of the wave base.
C) a depth of one-half the wavelength.
D) the surface.
Answer:
Which of the following is a property of light?
A) It is a wave.
B) It is a particle.
C) Its energy comes in packets of uniform size.
D) all of the above
E) none of the above
Answer:
Which of the following elements will most likely form an ion with a -1 charge?
A) Na
B) S
C) Ne
D) Mg
E) Cl
Answer:
If you are learning to juggle it would be good to slow the ball's acceleration. You can do
this by using
A) lighter balls.
B) heavier balls.
C) more balls.
D) none of the above
Answer:
The air in your cousin's room has
A) mass.
B) weight.
C) energy.
D) all of the above
E) none of the above
Answer:
What is the cause of Jupiter's extremely high-energy radiation belts?
A) an enormous magnetic field that captures high energy particles
B) the capture of a high number of metallic asteroids
C) tidal forces due to the interaction between Jupiter and its moons
D) the remnants of a massive collision between Jupiter and another large body
Answer:
The electric field between oppositely-charged parallel plates is
A) uniform.
B) stronger at the ends.
C) composed of field lines curved in opposite directions.
D) none of the above
Answer:
When an air mass is pushed upward over an obstacle, it undergoes
A) convectional lifting.
B) orographic lifting.
C) adiabatic lifting.
D) frontal lifting.
Answer:
What might the relationship be between an element's electronegativity and its ability to
behave as an oxidizing agent?
A) As the electronegativity goes up the ability of an element to act as an oxidant
increases.
B) As the electronegativity goes up the ability of an element to act as an oxidant
decreases.
C) As the electronegativity goes up the ability of an element to act as an oxidant stays
the same.
D) As the electronegativity increases the element has a tendency to undergo oxidation.
E) none of the above
Answer:
Why aren't solar stills used in more large urban areas?
A) They take up too much space.
B) They do not produce enough water.
C) They require too much sunlight.
D) They are not as efficient are reverse osmosis.
E) all of the above
Answer:
Which of the following statements best describes the concept of structural
conformation?
A) rearranging the shape of a molecule by rotating around bonds
B) rearranging the shape of a molecule by changing the arrangement of bonds
C) changing the structure by adding or subtracting bonds
D) arranging the atom into the best conformation for the given structure
E) changing the conformation to generate a new molecule with different chemical
properties
Answer:
Which of the following is not involved in cave formation in limestone?
A) mildly acidic groundwater
B) dissolution of carbonate rocks
C) land subsidence
D) a dropping water table
Answer:
Which of the following molecules is not a straight-chain hydrocarbon?
A) a
B) b
C) c
D) All of the above are straight-chain hydrocarbons.
E) None of the above are straight-chain hydrocarbons.
Answer:
The region above the zone of saturation is called the
A) water table.
B) zone of aeration.
C) aquifer zone.
D) none of the above.
Answer:
Lifting a 100-N load with 50 N of force lifts it
A) half as high.
B) as high.
C) twice as high.
Answer:
The oldest rocks are found
A) at convergent boundaries.
B) at divergent boundaries.
C) in the ocean basins.
D) on continental land.
Answer:
Which of the above images represents a solution of the strongest acid (HA)?
A) A
B) B
C) C
D) All of the above are strong acids.
E) None of the above are strong acids.
Answer:
Because of refraction, the Sun near sunset appears
A) higher in the sky.
B) lower in the sky.
C) farther away.
Answer:
Most surface ocean currents are due to
A) melting polar glaciers.
B) river flow into the ocean.
C) winds.
D) density differences in the vertical profile of the ocean.
Answer:
When the input piston of a hydraulic press is depressed 20 cm, the output piston is
observed to move 1 cm. An input force of 1 N can raise no more than
A) 1 N.
B) 10 N.
C) 20 N.
D) 21 N.
Answer:
If a battleship sinks in a canal lock, the water level in the lock
A) rises.
B) falls.
C) remains unchanged.
Answer:
Small samples of oxygen gas needed in the laboratory can be generated by any number
of simple chemical reactions, such as
2 KCl (s) → 2 KCl (s) + 3 (g)
What mass of oxygen (in grams) is produced when 122.6 g of KCl (formula mass =
122.6 amu) takes part in this reaction?
A) 32.00 grams
B) 48.00 grams
C) 96.00 grams
D) More information is needed.
Answer:
After rolling half-way down an incline, a marble's kinetic energy is
A) less than its potential energy.
B) greater than its potential energy.
C) the same as its potential energy.
Answer:
A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that
bounces backward upon impact. The boat
A) moves in the direction of the wind impact force.
B) does not move by this wind impact.
C) moves, but in the opposite direction of the wind impact force.
Answer:
The most noteworthy highlight of the Mesozoic era was the
A) break-up of Pangaea.
B) emergence of humans.
C) Pleistocene extinction.
D) ice age.
Answer:
In a battery, the following two oxidation-reduction reactions are taking place:
rxn A: Zn → Zn+2 + 2e-
rxn B: 2 NH4
+ + 2e- → 2 NH3 + H2
Which reaction is taking place at the anode?
A) rxn A
B) rxn B
C) Both reactions are happening at both the anode and cathode.
D) Both reactions are happening at the electrode.
E) The reaction takes place at the electrode, not the anode.
Answer:
