Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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An investigator is performing a controlled experiment to determine how the
length of a wire affects the flow of electricity through the wire, using wires of varying lengths and
observing the effect, if any, on the electrical current in the wire. What is (are) the
dependent variable(s) in this experiment?
a. | electrical current in the wire | b. | wire length | c. | all of the
above | d. | none of the above |
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2.
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Which of the following could be classified as a quantitative observation?
a. | odour | b. | texture | c. | mass | d. | state of matter |
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3.
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A type of scientific inquiry in which the investigator changes one variable and
then observes what change, if any, occurs in the other variable, is called a(n)
a. | correlational study | b. | observational study | c. | controlled
experiment | d. | none of the above |
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4.
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An investigator wants to determine how the concentration of reactants affects
the rate of a chemical reaction, by changing the concentration and observing the effect, if any, on
the reaction rate. Identify the independent variable(s) in this experiment.
a. | reaction rate | b. | concentration of reactants | c. | all of the
above | d. | none of the above |
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5.
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A scientist wants to determine how long it takes the planet Mars to orbit the
Sun. Which method of scientific inquiry could best be used to answer this question?
a. | correlational study | b. | observational study | c. | controlled
experiment | d. | none of the above |
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6.
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Which of the following could be classified as a qualitative observation?
a. | mass | b. | length | c. | population
count | d. | texture |
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7.
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An investigator wants to determine how plant growth is affected by the amount of
fertilizer used. What type of scientific inquiry could best be used to answer this
question?
a. | controlled experiment | b. | observational study | c. | correlational
study | d. | none of the above |
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8.
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To prompt a scientific investigation, a question must
a. | require the investigator to analyze quantitative data only | b. | require the
investigator to analyze qualitative data only | c. | be testable | d. | already have been
tested |
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9.
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All of the following statements regarding a hypothesis are true,
except
a. | It is a tentative answer to a scientific question. | b. | It is based on
existing scientific knowledge. | c. | It suggests a relationship between a dependent
variable and an independent variable. | d. | It predicts the outcome of an investigation,
without an explanation. |
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10.
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All of the following statements are true regarding a prediction,
except
a. | It is a statement that provides a possible outcome for a controlled
experiment. | b. | It always includes an explanation. | c. | It is based on prior knowledge and logical
reasoning. | d. | It can be part of a hypothesis. |
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11.
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The planning stage of an investigation includes all of the following,
except
a. | identifying the independent and dependent variables | b. | determining how the
changes in the variables will be measured | c. | performing the investigative
procedure | d. | deciding on a format for recording observations |
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12.
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Which of the following steps is performed during the performing and recording
stage of a scientific investigation?
a. | Graphs are plotted based on the quantitative data. | b. | A report is written
to summarize findings. | c. | The investigator makes accurate observations at
regular intervals. | d. | The investigator decides on a format for
recording observations. |
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13.
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All of the following steps are performed during the analyzing and evaluating
stage of a scientific investigation, except
a. | Data is carefully studied. | b. | Graphs are plotted to show patterns and
trends. | c. | Errors in measurement are observed. | d. | A report is written to summarize
findings. |
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14.
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All of the following statements are true regarding scientific literacy,
except
a. | It enables people to understand and evaluate information relating to science and
technology in the world. | b. | It allows us to make informed decisions and be
informed citizens. | c. | It helps to develop knowledge and skills that
apply to a wide range of careers. | d. | It is important only to those who choose a
scientific career. |
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15.
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Scientific literacy would be necessary for which of the following
careers?
a. | environmental science | b. | art | c. | plumbing | d. | all of the
above |
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16.
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An investigator wants to determine if a motor turns faster when the voltage is
increased. What type of scientific inquiry could be used?
a. | controlled experiment | b. | observational study | c. | all of the
above | d. | none of the above |
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17.
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An investigator wants to determine how long it takes an apple to
decompose. What type of scientific inquiry could be used?
a. | controlled experiment | b. | observational study | c. | all of the
above | d. | none of the above |
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18.
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All of the following are stages of a scientific investigation,
except
a. | initiating | b. | practising | c. | performing | d. | communicating |
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19.
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All scientific investigations begin with a
a. | hypothesis | b. | prediction | c. | testable
question | d. | set of quantitative data |
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20.
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Which of the following statements accurately describes a qualitative
observation?
a. | It is based on measurements or counting. | b. | Examples include
length, mass, and temperature. | c. | It describes the qualities of objects or
events. | d. | It is numerical. |
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