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Published byEverett Willis Modified over 8 years ago

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The Properties of Pennies

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Science Labs Begin with a Question Do all groups of pennies have the same physical properties?

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Form Your Hypothesis Your hypothesis should be a testable answer to the question or a testable explanation. Hypothesis: All groups of pennies (have or don’t have) the same physical properties.

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Independent Variable The Independent Variable is the factor in an experiment that you change purposefully. Independent Variable: The mint date of the pennies.

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Levels of the Independent Variable The levels are the different experiments we will conduct. Levels of the Independent Variable: Group A Pennies and Group B Pennies (observe the dates on the pennies to find the date range for the group.)

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Control The control is the standard for comparison in the experiment. Since we can compare the pennies in the B group to the pennies in the A group, we will call group A the control group. Control: group A pennies

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Repeated trials help to make the experiment valid. How many repeated trials will be performed? Each lab group will perform the experiment and so can count as a trial. Repeated Trials: 6

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Dependent Variable The Dependent Variable is the responding variable. What are the factors we will be observing and measuring? Dependent Variable: The physical properties of the pennies (color, luster, mass, volume, and density)

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Constants The constants are the factors in the experiment that are kept the same. Constants: 10 pennies in each group.

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Procedure Diagram Sketch a diagram to help explain how you will conduct the experiment.

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Create a Data Table The first column holds the independent variable and the dependent variable goes to the right. Mint Date ColorLuster Other properties Mass (g) Volume (cm3) Density (g/cm3)

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Display the Data as a Graph Determine the best type of graph for your data. A bar graph can compare two quantities like the densities of the groups of pennies.

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Conclusion – Summarize the Results Summarize your results in a paragraph. Describe any trends or patterns you notice in your table and graph. Make comparisons of the experimental groups. Use statistics like the mean or range.

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Conclusion - Analyze the Results Analyze the results in terms of the lab question. Write a paragraph in which you analyze the results. Include how the results either support or disprove your hypothesis. Explain whether you can answer the lab question.

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Conclusion – Apply what you have learned Relate science concepts from class to the results of the experiment. In a paragraph, provide information about concepts in class that relate to this lab. Explain how these concepts help you make sense of your lab results.

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