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The electric force between charges is strongest when the charges are
A) close together.
B) far apart.
C) either of these
Answer:
According to the following balanced chemical equation, if you want to generate two
moles of H2O how many grams of O2 do you need?
2 H2 + O2 → 2 H2O
A) 32
B) 16
C) 8
D) 4
E) 6.022 1023
Answer:
Heat is thermal energy that matter
A) contains.
B) transfers.
C) both of these
D) none of the above
Answer:
The whiteness of clouds is due mainly to
A) scattering.
B) reflection.
C) polarization.
D) water prisms.
Answer:
What do astronomers expect will be left at the center of our solar system once the Sun
has gone through all its life stages?
A) a planet sized diamond
B) a red giant
C) a black hole
D) a wormhole
Answer:
In discussing atmospheric moisture, the term most used by meteorologist is
A) relative humidity.
B) specific humidity.
C) water vapor capacity.
D) temperature.
Answer:
Which contracts more when the temperature is decreased? Equal volumes of
A) iron.
B) wood.
C) water.
D) helium.
E) all contract the same
Answer:
When snow falls, the surrounding air is normally
A) cooled.
B) warmed.
C) both of these
D) none of the above
Answer:
The atmosphere is divided into several layers. The troposphere is the
A) lowest and thickest layer, where Earth's weather occurs.
B) lowest and thinnest layer, where Earth's weather occurs.
C) atmosphere's third and thickest layer.
D) lowest and least dense layer in the atmosphere, where Earth's weather occurs.
Answer:
Which of the following is a saturated molecule?
A) a
B) b
C) c
D) d
E) none of the above
Answer:
To achieve a low equivalent resistance for a pair of resistors, connect them in
A) series.
B) parallel.
C) either of these
Answer:
The San Andreas fault is still active today as the northwest moving
A) North American Plate grinds against the southwest moving Pacific Plate.
B) Pacific Plate grinds against the southwest moving North American Plate.
Answer:
To say that an object is electrically polarized is to say
A) it is electrically charged.
B) its charges have been rearranged.
C) its internal electric field is zero.
D) it is only partially conducting.
E) it is to some degree magnetic.
Answer:
If the same quantity of heat is added to both a 1-liter and a 2-liter container of water, the
temperature change in the 1-liter container will be
A) less.
B) the same.
C) greater.
Answer:
Which has more atoms: a 1-gram sample of carbon-12 or a 1-gram sample of
carbon-13?
A) More information is needed.
B) a 1-gram sample of carbon-12
C) a 1-gram sample of carbon-13
D) They have the same number of atoms.
Answer:
If you jump vertically while inside a fast-moving train that is slowing down, you land
A) a bit ahead of your original position.
B) at your original position.
C) a bit behind your original position.
Answer:
Which will stay cooler for a longer time in a picnic cooler on a hot summer day?
A) sandwiches
B) salami
C) Jello
Answer:
Which of the following is not a nonmetal?
A) titanium (atomic no. = 22)
B) sulfur (atomic no. = 16)
C) selenium (atomic no. = 34)
D) xenon (atomic no. = 54)
E) helium (atomic no. = 2)
Answer:
How might electrolysis be used to raise the hull of a sunken ship?
A) An electric current passed through the hull of the ship would produce electrolysis
and the gases trapped in the compartments of the vessel would push it upwards.
B) The electrolysis of the water beneath the hull of the ship would boil the water and
create upward pressure, thus buoying the ship upward.
C) The gaseous products of the electrolysis of water could be collected with large bags
attached to the hull of the ship. As the bags inflate with the gas they are buoyed upward
pulling the ship also upward.
D) Electrolysis could only be used to raise the hull of a ship if the ship were made of
iron. If so, the electrolysis of the iron metal might produce enough gas to lift the ship.
Answer:
Because a refrigerator operates by a motor, leaving the refrigerator door open for hours
in a closed room
A) increases room temperature.
B) decreases room temperature.
C) doesn't affect room temperature.
Answer:
At divergent boundaries the dominant rock type is
A) basalt.
B) granite.
C) andesite.
D) basalt, granite, and andesite.
Answer:
Evidence to support the fact that Earth's central core is solid can be attributed to
A) a decrease in S-wave velocity as they encounter and move through the inner core.
B) an increase in P-wave velocity as they encounter and move through the inner core.
C) a decrease in P-wave velocity as they encounter and move through the inner core.
D) an increase in S-wave velocity as they encounter and move through the inner core.
Answer:
The "Big Bang" refers to the
A) point in time in which the known (and perhaps knowable) universe came into being.
B) phenomenon of rapid chain reaction supernovae during the first 100 seconds of the
universe.
C) time when our Sun will become a nova, rendering Earth into molten lava.
D) end of the universe when simultaneous supernovae will transform the universe into a
supergiant black hole.
Answer:
You throw a golf ball at a massive bowling ball at rest and the golf ball bounces
backward from it. After the bounce, compared with the golf ball, the bowling ball has
more
A) momentum, but less kinetic energy.
B) kinetic energy, but less momentum.
C) momentum and more kinetic energy.
D) less momentum and less kinetic energy.
E) not enough information
Answer:
Compared with oceanic crust, continental crust is very buoyant because it is
A) composed of basaltic rock that contains air bubbles from successive lava flows.
B) composed of granitic rocks whereas oceanic crust is composed of basaltic rocks.
C) thinner and forms a thin upper skin on the oceanic crust below.
D) very young and fresh.
Answer:
There is a legend of a Dutch boy who bravely held back the Atlantic Ocean by plugging
a leak near the top of a dike with his finger until help arrived. Which of the following is
most likely?
A) The huge size of the Atlantic Ocean makes this impossible.
B) The force on his finger would be huge but the pressure small enough.
C) The force on his finger would have been less than 1 N.
D) Both the force and pressure on his finger would have been huge.
E) none of the above
Answer:
Which of the following does not describe ionic compounds?
A) They have a tendency to melt easily.
B) They consist of positive and negative ions.
C) They are held together by electrostatic attraction.
D) They are usually very ordered.
E) none of the above
Answer:
Some reactions are more sluggish than others. To speed up these reactions and save
energy a(n) ________ is sometimes added.
A) catalyst
B) activator
C) heat source
D) exotherm
E) reaction profile
Answer:
Rocks from the Carboniferous period are significant because they
A) contain diamonds.
B) provide gold and silver deposits.
C) have large deposits of coal and oil.
D) are a source of cement.
Answer:
In a sequence of sedimentary rocks, the bottom layer is the youngest and the top layer is
the oldest. This type of sequence suggests that the
A) principles of original horizontality and superposition are flawed.
B) beds must have been overturned by some structural disturbance.
C) dates for these rocks must be in error.
D) principles of original horizontality and superposition hold true.
Answer:
During the late Cenozoic, sea level was
A) low-water was tied up in the glaciers that covered the land surface.
B) high as melt water from glaciers was released due to warm ocean floors.
C) relatively high as ocean floors stood higher and seawater covered the continents.
D) relatively low due to rifting activity in the final phase of Pangaea's break-up.
Answer:
