Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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A student
wants to incorporate a scanned photograph into her lab report. The photograph must be reduced to fit
within the margins of the text. What computer application could she use to accomplish this
task? a. | Graphics
software | c. | Word-processing
program | b. | Electronic spreadsheet | d. | Help menu | | | | |
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A researcher
is studying the effects of climate on freshwater life. She sets up an experiment wherein she will
count the number of microscopic organisms, called Paramecium, that survive at a given
temperature. Her results are shown in the graph below.
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2.
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What can you
infer from the data? a. | Paramecium die at cold temperatures. | b. | Paramecium
thrive at moderate temperatures. | c. | Paramecium thrive at high
temperatures. | d. | Paramecium are not affected by temperature
changes. | | |
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3.
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Which of the
following is an example of a product? a. | A meal | c. | An airplane flight | b. | A
bicycle | d. | A karate
class | | | | |
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4.
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How
much liquid is in the cylinder shown in the figure? a. | 78
mL | c. | 80
mL | b. | 79
mL | d. | 81
mL | | | | |
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5.
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What
property of a wave is represented by Y in the diagram? a. | frequency | c. | wavelength | b. | speed | d. | amplitude | | | | |
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6.
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Which
of the following is directly related to the amplitude of a wave? a. | the energy of
the wave | b. | the speed of the wave | c. | the wavelength
of the wave | d. | the medium in which the wave is
produced | | |
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7.
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When
a tuning fork is struck by a mallet, the tuning fork vibrates ____. a. | as a standing
wave | b. | at its natural
frequency of vibration | c. | until it falls apart | d. | at different
frequencies depending on how it is struck | | |
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8.
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Geologists make extensive use of radioactivity to establish the geologic history of
Earth. One technique employs the ratio of U-235 atoms to Pb-207 atoms. U-235 atoms form Pb-207 atoms
through a series of decays with essentially the half-life of U-235, which is 704 million years. That
is, the amount of U-235 in a sample of rock decays to one-half its original amount in 704 million
years.
A sample of rock is found to contain 1/4 of the U-235
atoms present when the rock was formed. What is the approximate age of the rock? a. | 1.4 billion
years | c. | 352 million
years | b. | 704 million years | d. | 2.8 billion years | | | | |
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9.
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What
is the mass of the object being measured in the figure?
a. | 47.52 g | c. | 407.52 g | b. | 147.52
g | d. | 527.40
g | | | | |
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10.
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Examine the figure shown. Which of the following statements explains why a steel ship
will float on water but a bar of steel will sink.
a. | Because of the
air in the hull, the overall density of the ship is less than the density of
water. | b. | The buoyant force on the ship is greater than the weight of the
ship. | c. | The densest part of the ship is the part that is out of the
water. | d. | When rolled into a sheet, steel is less dense than
water. | | |
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11.
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A
group of students collected samples of equal volume of several different liquids, such as dish
detergent, vinegar, molasses, and shampoo. They placed the liquids in identical graduated cylinders
and measured the amount of time it took for a marble to drop from the top of the liquid to the
bottom. What were the students measuring? a. | buoyancy | c. | state of matter | b. | pressure | d. | viscosity | | | | |
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12.
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What
type of circuit does the drawing represent? a. | a parallel circuit | c. | a combined series/parallel circuit | b. | a 240-volt
circuit | d. | a series
circuit | | | | |
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13.
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Sequence the following atoms from greatest to least tendency to gain an electron.
Refer to a copy of the periodic table. Atoms: Ca, Cl, Ga, Rb, S. a. | Cl, S, Ga, Ca,
Rb | c. | S, Ca, Cl, Ga,
Rb | b. | Rb, Ca, Ga, S,
Cl | d. | S, Rb, Ga, Cl,
Ca | | | | |
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14.
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The
diagram shows an example of which of the following?
a. | element | c. | heterogeneous
mixture | b. | compound | d. | homogeneous mixture | | | | |
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15.
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Which
of the following is NOT an acceleration? a. | Slowing your bike so you can make it up a
hill | b. | Stopping your
bike at an intersection | c. | Riding your bike faster when you head down a
hill | d. | Riding your bike
straight down the street at a constant speed | | |
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16.
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Freezing point decreases as the number of particles dissolved in the solution
increases. Which of the following compounds would be most effective in melting ice on the
road? a. | C12H22O11 | c. | KBr | b. | CaCl2 | d. | NaCl | | | | |
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17.
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The
pH of an HC2H3O2 solution is 4. What is a possible pH of an HCl
solution of the same concentration?
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18.
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Which
of the following statements is true regarding the effect of thermal pollution on the organisms living
in a lake? a. | More dissolved
oxygen will be present because an increase in temperature will increase the solubility of oxygen in
the water. | b. | The lake will be able to support more organisms because
organisms grow better in warm water. | c. | The water in the warmer lake will contain less dissolved
oxygen, so fewer organisms that require oxygen will be able to live there. | d. | Thermal
pollution has no effect on the organisms involved. | | |
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19.
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Which
of the following factors affects the solubility of a solid dissolved in a liquid but not its rate of
solution? a. | Increase in
surface area | c. | Temperature | b. | Nature of the solute and
solvent | d. | Stirring | | | | |
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20.
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Which
of the following statements is true regarding the relationship between temperature and solubility in
water? a. | All solids
become more soluble as temperature increases. | b. | An increase in
temperature of the water usually results in more solid solute dissolving. | c. | Gases become
more soluble as temperature increases. | d. | The effect of temperature on the solubility of both gases and
solids is the same. | | |
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21.
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If
there is a clear chemical on your table during a lab, how should you identify it? a. | Ask your
instructor what it is. | c. | Smell the
chemical. | b. | Taste the chemical. | d. | Rub the chemical between your
fingers. | | | | |
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22.
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You
launch a toy rocket into the air. When it runs out of fuel, it nose dives and crashes into the
ground. What acceleration describes the crash from the point at which it starts to nose
dive? a. | Increases
rapidly to a constant high speed | b. | Decreases slowly to a constant low
speed | c. | Decreases slowly then suddenly becomes
zero | d. | Increases
rapidly then suddenly becomes zero | | |
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23.
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If
the force exerted in the direction of arrow 3 is 20 N, what is the force exerted in the direction of
arrow 1?
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24.
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A pot
of boiling water is sitting on an electric range. Which process of thermal energy transfer occurs
between the burner and the pot? a. | convection | c. | radiation | b. | conduction | d. | currents | | | | |
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25.
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In
order for convection to occur, density of heated materials must decrease. Which of the following
would cause a decrease in density if the equation for density is r = m/V,
where m is mass and V is volume? a. | m and V remain
constant | c. | V
decreases while m is constant | b. | m increases while V is
constant | d. | V
increases while m is constant | | | | |
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