Instructions for Measurement Lab ---- Experiment No. 1 Lab Report

Your lab report will consist of four sections: Introduction, Results, Discussion and Questions. The lab report must be typed using a 12 point font. Cursive or ornate fonts are not acceptable. Be careful with spelling and grammar. Poor spelling and grammar detract from a reader’s overall impression of the report.

Your report will be graded out of thirty points possible as follows:

Introduction. (3 points) The introduction should include a clearly stated purpose. The introduction should also contain some background information on the metric system and/or measurement. This should be about a paragraph of 7 to eight sentences.

Results. (7 points) This section should include your results from the all the mini-labs that we did.

1. Create a table for the penny data. Include in the table the mean. .Also, calculate the standard deviation (use the function in Excel)

2. Prepare a graph of mass versus volume. Place mass on the vertical axis (y) and volume on the horizontal axis (x). Determine a line of best fit using instructions given on the web site for using the spreadsheet program Excel. Show equation for the line (especially slope) somewhere on your graph (use trend line option if using Excel). Graph must also include units.

3. Show how you calculated the volume of the straw using a ruler. Compare that result from the volume calculated using the mass of water.

4. Finally you should have a scale drawing (1:50 or 2 cm = 1.0 m or 1:100 or 1.0 m = 1.0 cm) of the classroom to include as a minimum the four walls of the classroom. Diagram must include units. Use a ruler for your drawing.

5. Prepare a graph of the Fahrenheit (y) and Celcius (x) temperatures that you determined. Prepare a slope and an intercept from your data. (do this in Excel) How does your determination compare to the actual conversion factor for Fahrenheit and Celcius temperatures.

Discussion (7 points):

1. Discuss difference in two sets of pennies. Are the differences significant? Suggest possible reasons for difference.

2. Theoretically 1.0 mL of water had a mass of 1.0 g. Does your data support this relationship. Explain. Discuss any variations in your data or possible sources of error.

3. Theoretically the relationship between the circumference and the diameter is C = BD whereas there is not necessarily a relationship between height and diameter. Do your data support this? Explain fully. . Discuss any variations in your data or possible sources of error.

4. Are there any possible sources of error in your room diagram? Explain.

Questions. (10 points – 2 points per question) Answer the five questions at the end of the lab handout.

Appearance, Spelling and Grammar (3 points) More than one spelling error and you will lose a point. For major grammar errors (sentence fragments, run-on sentences, comma splices, etc.), you will lose a point.