Title: Measurement Lab
Title: Measurement Lab
Purpose:
▪ To measure the dimensions of several objects
▪ To practice using the metric system of measurement
▪ To review using significant digits
Materials: metric rulers , wood blocks, lab notebook, and Physics textbook
Procedure:
1. Measure and record in Table 1 the dimensions (in cm) of several wood blocks.
a. Read to nearest mm and estimate to 0.1mm
(Your measurements should have 2 decimal places!)
b. Calculate the volume of each block (using significant figures rules!)
c. Determine percent error….get actual value (A) from teacher after you do the volume calculation!
2. Repeat with lab notebook and Physics textbook.
3. Using the metric ruler, estimate the thickness of 1 page of your lab notebook and record in Table 2.
4. Using the metric ruler, estimate the thicknesses of 25, 50, 75, 100, and 200 pages in the lab notebook and your textbook and determine the average thickness of a single page.
Results:
|Data Table 1: Dimensions of Wood Blocks and |
|Object |Length (cm) |Width (cm) |Height (cm) |Volume (cm3) |Percent Error Calculation [pic] |
|Wood block 1 | | | | | |
|Wood block 2 | | | | | |
|Wood block 3 | | | | | |
|Wood block 4 | | | | | |
|Lab Notebook | | | | | |
|Textbook | | | | | |
| |
| |
|Data Table 2: Page Thickness of Lab Notebook and Textbook |
|Lab Notebook | |Textbook |
|# Pages |Total Thickness |Average Thickness| |# Pages |Total Thickness |Average Thickness|
| |(mm) |(mm) | | |(mm) |(mm) |
|1 | | | |1 | | |
|25 | | | |25 | | |
|50 | | | |50 | | |
|75 | | | |75 | | |
|100 | | | |100 | | |
|200 | | | |200 | | |
Discussion: Answer the following questions:
1. Define the terms precise and accurate.
2. Of the measurements above, which are most precise and which are most accurate? Why? Explain using information from your data tables.
3. List 5 sources of error.
4. In a high school physics lab, is accuracy or precision more important? Explain!
Conclusion: None required!
Reflection: Personal Statement
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