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The frequency of an electromagnetic wave and the frequency of the vibrating electrons
that produce it are
A) nearly the same.
B) the same.
C) quite different.
Answer:
Dark Matter is matter that
A) cannot be seen, felt, or measured.
B) cannot be seen or felt, but can be measured through its gravitational effects.
C) is Dark Energy's complement.
D) is found within a black hole.
Answer:
The headwater flow of a mountain stream is generally characterized as
A) laminar.
B) turbulent.
C) meandering.
D) all of these
Answer:
Copper atoms have a greater tendency to be reduced than iron atoms do. Was this good
news or bad news for the Statue of Liberty, whose copper exterior was originally held
together by steel rivets?
A) This was good news since the steel rivets prevented the copper from eroding.
B) Electrons will preferentially flow from the iron to the copper and then onto oxygen.
Corrosion is thus accelerated around the interface of these two metals.
C) This combination of metals have no effect on each other and that is why engineers
chose to use them together.
D) This combination of metals caused the copper to oxidize and turn green.
Answer:
Clouds denoted by the prefix "alto" are
A) high clouds that form about 6000 meters above the ground.
B) middle clouds that form 2000 to 6000 meters above the ground.
C) low clouds that form 1000 to 2000 meters above the ground.
Answer:
A 0.5-kg blob of clay moving at 2.0 m/s slams into a 4.0-kg blob of clay at rest. The
speed of the two blobs stuck together after colliding is about
A) 1.1 m/s.
B) 1.5 m/s.
C) 2.5 m/s.
D) none of the above
Answer:
If carbonic acid (H2CO3) were to undergo ionization, what would one of the products
be?
A) H-
B) CO2
C) H2O
D) CO3
-1
E) CO3
-2
Answer:
How might you separate a mixture of sand and salt?
A) with tweezers and a magnifying glass
B) just add water
C) heat the mixture until one of the components melts
D) Two of the above answers are reasonable.
Answer:
Behind a warm front, the air is
A) cool and wet.
B) warm and sunny.
C) warm and wet.
D) cool and dry.
Answer:
In a 1-g gravitational field, in 1 s, a light beam will curve beneath a perfectly straight
line by
A) much less than 4.9 m.
B) about 4.9 m.
C) much more than 4.9 m.
Answer:
As air rises, it expands. It expands because it moves to
A) a region of higher air pressure.
B) a region of lower air pressure.
C) an area of greater humidity.
D) an area of cooler air temperature.
Answer:
What is a reaction rate?
A) It is the speed at which reactants are consumed or product is formed.
B) It is the balanced chemical formula that relates the number of product molecules to
reactant molecules.
C) It is the ratio of the masses of products and reactants.
D) It is the ratio of the molecular masses of the elements in a given compound.
E) none of the above
Answer:
The San Andreas fault
A) stretches from the Gulf of California to Cape Mendocino, California, and separates
the Pacific Plate from the North American Plate.
B) accommodates all the motion between the Pacific Plate and the North American
Plate.
C) is presently inactive.
D) all of the above
Answer:
For the following acid-base reaction, identify which salt is formed.
HCl + NaOH ???? + H⇌2O
A) NaCl
B) H3OCl
C) NaOH2
D) NaOH2Cl
E) none of the above
Answer:
Which of the following properties most clearly reflects the internal arrangement of
atoms in a crystalline material?
A) color
B) cleavage
C) luster
D) density
Answer:
Compared with the speed of light in a vacuum, the speed of light in the empty space
between molecules in glass is
A) more.
B) the same.
C) less.
Answer:
Continental crust extends farther down into the mantle than oceanic crust because
A) it is thicker than oceanic crust.
B) oceanic crust is buoyant and rides atop the mantle.
C) it is heavier than oceanic crust.
D) it sinks into the mantle and asthenosphere.
Answer:
Warm, moist air blowing over cold water can result in
A) adiabatic cooling.
B) a dry adiabatic rate.
C) fog.
D) orographic lifting.
Answer:
Consider two planets in space that gravitationally attract each other. If the masses of
both planets are doubled, and the distance between them doesn't change, then the force
between them is
A) one-quarter.
B) half as much.
C) twice as much.
D) four times as much.
E) none of the above
Answer:
While a car travels around a circular track at constant speed, its
A) acceleration is zero.
B) velocity is zero.
C) both of these
D) none of the above
Answer:
When a contracting hot ball of stellar gas spins into a disk shape, it cools faster due to
A) increased convection currents.
B) increased radiation transfer.
C) decreased insulation.
D) increased surface area to volume.
E) eddy currents.
Answer:
The range of human hearing is about
A) 10 Hz - 10,000 Hz.
B) 20 Hz - 20,000 Hz.
C) 40 Hz - 40,000 Hz.
D) all of the above, depending on the person
Answer:
Convectional lifting is caused by
A) circulatory movement deep in Earth's interior.
B) contact of an air mass with warm ground surfaces.
C) the movement of cumulus clouds.
D) humid air rising through the atmosphere.
Answer:
When air contains as much water vapor as it can possibly hold for a given temperature,
the air is at
A) capacity.
B) optimum threshold.
C) its evaporation point.
D) sublimation point.
Answer:
Glass in a florist's greenhouse acts as a one-way valve by
A) blocking the flow of light energy.
B) blocking unwanted radiation.
C) being transparent only to lower-frequency waves.
D) allowing high-frequency waves to enter and blocking low-frequency waves from
exiting.
Answer:
The yellow clothes of a stage performer appear black when illuminated by light that is
A) red.
B) green.
C) blue.
D) all the above combined
E) none of the above
Answer:
Hydrocarbons release a lot of energy when ignited. Where does this energy ultimately
come from?
A) the breaking of chemical bonds
B) the formation of chemical bonds
C) photosynthesis
D) nuclear fusion in the sun
Answer:
To steadily (constantly) increase the velocity of something requires a
A) steadily increasing force.
B) constant net force.
C) decreasing force.
D) none of the above
Answer:
Which of the following statements about ozone is true?
A) Ozone in the stratosphere is beneficial.
B) Ozone in the troposphere is a pollutant.
C) Ozone is generated from photochemical reactions of hydrocarbons.
D) none of the above
E) both a and b
Answer:
The Earth's largest ocean is the
A) Atlantic.
B) Pacific.
C) Arctic.
D) World Oceanthere is one big ocean taking up three-quarters of the world!
Answer:
Complete the following nuclear equation:
?? → At + e
A) Ra
B) At
C) Po
D) Rn
E) none of the above
Answer:
If you do work on an object in half the time, your power output is
A) half.
B) the same.
C) twice.
Answer:
The three colors that comprise the image on a TV screen are
A) red, blue, and yellow.
B) red, blue, and green.
C) yellow, blue, and green.
D) magenta, cyan, and yellow.
E) red, green, and yellow.
Answer:
