in the scientific method experiment, pillbugs were added to a choice chamber with two sides connected by a…

in the scientific method experiment, pillbugs were added to a choice chamber with two sides connected by a channel that allowed the pillbugs to move to either side. one side of the container was lined with sand (no nutrients) and the other side was lined with cornstarch which contained nutrients. based on your understanding of the experiment and its variables, select the incorrect statement below. \na controlled experiment is often conducted in multiple trials. \nexperiments are typically conducted with one type of variable such as an independent, dependent, or standardized variable. \na controlled experiment allows comparison between a control group and a test (experimental) group that has been exposed to an experimental factor (the variable). \na controlled experiment allows scientists to test hypotheses and to draw conclusions based on reproducible results.

in the scientific method experiment, pillbugs were added to a choice chamber with two sides connected by a channel that allowed the pillbugs to move to either side. one side of the container was lined with sand (no nutrients) and the other side was lined with cornstarch which contained nutrients. based on your understanding of the experiment and its variables, select the incorrect statement below. \na controlled experiment is often conducted in multiple trials. \nexperiments are typically conducted with one type of variable such as an independent, dependent, or standardized variable. \na controlled experiment allows comparison between a control group and a test (experimental) group that has been exposed to an experimental factor (the variable). \na controlled experiment allows scientists to test hypotheses and to draw conclusions based on reproducible results.

Answer

Brief Explanations:

  • Option A: Controlled experiments often have multiple trials for reliability, so this is correct.
  • Option B: Experiments do involve variables (independent, dependent, standardized), so this is correct.
  • Option C: A controlled experiment compares a control group (not exposed to the variable) and an experimental group (exposed to the variable). The statement here says the control group is exposed, which is incorrect.
  • Option D: Controlled experiments help test hypotheses with reproducible results, so this is correct.

Answer: C. A controlled experiment allows comparison between a control group and a test (experimental) group that has been exposed to an experimental factor (the variable).