You have effectively discussed the hypothesis for this diffusion experiment by expertly noting that the increase in temperature increases the rate of diffusion

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BRP1 — BRP TASK 1
NATURAL SCIENCE LAB — C683
PRFA — BRP1
TASK OVERVIEWSUBMISSIONSEVALUATION REPORT
SELECT EVALUATION
Attempt 1
Attempt 1
EVALUATION REPORT — ATTEMPT 1 — REVISION NEEDED
Overall Evaluator Comments
EVALUATOR COMMENTS
You have effectively discussed the hypothesis for this diffusion experiment by expertly noting that the increase in temperature increases the rate of diffusion. You also capably represented the collected data on the diffusion time by adeptly providing the data table showing the hotter water sample taking the least time to diffuse. Please see the comments below regarding the aspects that need further revision.
Criteria For Submission.
Competent
A. References
Competent
B. Hypothesis
Competent
C. Justification of Hypothesis
Competent
D. Independent Variable
Approaching Competence
Approaching CompetenceThe descriiption incorrectly identifies the independent variable(s). The descriiption of independent variable(s) manipulation lacks the clarity needed by a reader to replicate the experiment, or the manipulation is unsuitable for the variable. If applicable, the descriiption incorrectly includes how experimental conditions differ.
EVALUATOR COMMENTS: ATTEMPT 1
The red stamp ink is clearly identified as the independent variable. This variable is not the accurate independent variable for the experiment. For instruction on manipulating an independent variable, quantifying a dependent variable, and controlling confounding variables, please visit the study plan for this course by clicking on the link located to the right of this rubric item’s name, “Dependent Variable.” Navigate to “Module 3 – Testable Hypotheses”and view the video entitled “Variables” on page 9.
E. Dependent Variable
Approaching Competence
Approaching CompetenceThe descriiption incorrectly identifies the dependent variable(s). The descriiption of how the dependent variable(s) will be quantified and recorded does not include units of measure or lacks the clarity needed by a reader to replicate the experiment. The quantification of the variable, the units of measure, or how the variable will be recorded is unsuitable for the variable.
EVALUATOR COMMENTS: ATTEMPT 1
The temperature is clearly identified as the dependent variable. This variable is not the quantifiable dependent variable for the experiment.
F. Confounding Variables
Not Evident
Not EvidentNo confounding variables are described.
EVALUATOR COMMENTS: ATTEMPT 1
The report capably notes that the time it takes for the color to spread is measured using the stopwatch. A confounding variable, how it could impact the experimental manipulation, and how controlling this variable would effectively mitigate any confounding effect on the observed results could not be found.
G. Materials
Competent
H. Experimental Procedure
Competent
I. Descriiption of Results
Competent
J. Visual Representation
Competent
K. Hypothesis Discussion
Competent
L. Uncontrolled Confounding Variables
Not Evident
Not EvidentA descriiption of uncontrolled confounding variables is not provided.
EVALUATOR COMMENTS: ATTEMPT 1
The report adeptly notes that the experiment conclusively indicated that increase in temperature of a fluid increases the rate of diffusion. A descriiption of the uncontrolled confounding variables is not provided. For instruction on discussing whether the hypothesis was confirmed, refuted, or partially confirmed, please visit the study plan for this course by clicking on the link located to the right of this rubric item’s name, “Hypothesis Discussion.” Navigate to “Module 5 – Data and Conclusion” and view the video entitled “Conclusions” on page 13.
M. Relation of Results to Literature
Competent
N. Sources
Approaching Competence
Approaching CompetenceThe submission includes in-text citations for sources that are quoted, paraphrased, or summarized, and a reference list; however, the citations or reference list is incomplete or inaccurate.
EVALUATOR COMMENTS: ATTEMPT 1
In-text citation for the source from the STEM research article is clearly provided. In-text citation for the second source as well as complete references for the two sources could not be found.
Professional Communication.
Competent

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