A farmer wants to test the affects of a pesticide on his peach crop yield, so he sprays an orchard with the pesticide treatment. A second orchard does not receive the pesticide. In the fall, the number of peaches harvested from each orchard is counted. Which of the following is the independent (manipulated) variable in the experiment?(1 point)
Responses
the pesticide
the pesticide
the second orchard
the second orchard
the first orchard
the first orchard
the number of peaches
The independent (manipulated) variable in the experiment is the pesticide.
A theory(1 point)
Responses
is always true.
is always true.
may be revised or replaced.
may be revised or replaced.
is a problem to be solved.
is a problem to be solved.
is the opening statement of an experiment.
A theory may be revised or replaced.
Which of the following is not included in the design of an laboratory experiment?(1 point)
Responses
Materials used
Materials used
Problem statement
Problem statement
Procedure
Procedure
Conclusion
Problem statement is not typically included in the design of a laboratory experiment. The design of an experiment usually includes materials used, procedure, and conclusion.
Scientists form hypotheses from which of the following?(1 point)
Responses
prior knowledge.
prior knowledge.
logical inferences.
logical inferences.
informed, creative imagination.
informed, creative imagination.
all of the above
all of the above
Scientists form hypotheses from all of the above- prior knowledge, logical inferences, and informed, creative imagination.
scientist finds that her hypothesis is not supported by the data she gathered as a result of her experiment. What conclusion can she reach?(1 point)
Responses
The data are incorrect.
The data are incorrect.
The hypothesis is wrong.
The hypothesis is wrong.
The data do not support the hypothesis.
The data do not support the hypothesis.
Her observations were biased.
The conclusion that can be reached is that the data do not support the hypothesis.
[This iYou suggest that the absence of water could slow the growth of mold on bread slices. This is a(an)
s the stem.](1 point)
Responses
experiment.
experiment.
hypothesis.
hypothesis.
conclusion.
conclusion.
analysis.