Modified True/False
Indicate whether the sentence or statement is
true or false. If false, change the identified word or phrase to make the sentence or statement
true.
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1.
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The diverse ways in which scientists study the natural world is known as
scientific inquiry. _________________________
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2.
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The number of bears in a park is an example of scientific data.
_________________________
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3.
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A variable is a possible explanation for a set of observations or answer
to a scientific question. _________________________
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4.
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A scientist changes the manipulated, or independent, variable during a
controlled experiment. _________________________
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5.
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A responding, or dependent, variable changes as a result of changes to
the manipulated variable. _________________________
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6.
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A theory tells if the data support the hypothesis.
_________________________
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7.
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A scientific theory is a well-tested idea that explains and connects a
wide range of observations. _________________________
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Multiple Choice
Identify the letter of the choice that best
completes the statement or answers the question.
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8.
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What skill is a scientist using when she listens to the sounds that whales
make?
a. | interpreting data | b. | developing hypotheses | c. | making
observations | d. | drawing conclusions |
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9.
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Measurements of the heights of various plants in an experiment are called
a. | data. | b. | inquiries. | c. | theories. | d. | inferences. |
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10.
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Your friends return from a canoe trip on the lake and they are dripping wet.
What inference might you make?
a. | Their clothes are wet. | b. | They are tired. | c. | Their canoe tipped
over. | d. | They are skillful at canoeing. |
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11.
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A possible explanation for a set of observations is known as a (n)
a. | variable. | b. | hypothesis. | c. | theory. | d. | conclusion. |
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12.
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A scientist hypothesizes that the temperature at which an alligator's egg
is incubated will determine whether the alligator will be a male or female. If the scientist conducts
a controlled experiment, temperature would be called
a. | the responding variable. | b. | the conclusion. | c. | the dependent
variable. | d. | the manipulated variable. |
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13.
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A scientist conducted an experiment to determine how the amount of salt in a
body of water affects the number of plants that can live in the water. In the experiment, the
responding variable is
a. | the amount of salt in the water. | b. | the temperature of the
water. | c. | the depth of the water. | d. | the number of plants in the
water. |
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14.
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When you analyze a table of measurements taken during an experiment, you
are
a. | posing questions. | b. | interpreting data. | c. | making
inferences. | d. | manipulating variables. |
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15.
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When you decide whether or not the data support the original hypothesis, you
are
a. | making an inference. | b. | making an observation. | c. | drawing a
conclusion. | d. | posing a question. |
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16.
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When a scientist shares his or her findings with other scientists, the scientist
is
a. | communicating. | b. | experimenting. | c. | hypothesizing. | d. | theorizing. |
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17.
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What is a well-tested concept that explains a wide range of observations?
a. | scientific observation | b. | scientific inquiry | c. | scientific
theory | d. | scientific inference |
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18.
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What is the most important skill in any experiment?
a. | making measurements | b. | communicating ideas | c. | making
observations | d. | practicing safe laboratory practices |
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19.
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Your teacher hands out a copy of a laboratory experiment. What is the first
thing you should do to conduct the experiment safely?
a. | Obtain and open any materials described in the experiment. | b. | Begin heating any
materials that will need to be hot. | c. | Mix your materials with those of another group
to save time. | d. | Read every step of the procedure to make sure you understand
it. |
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Short Answer
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20.
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Identify the manipulated variable in the experimental setup shown in the
diagram.
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