09/20/2010 Unit 1:  Measurements

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bulletUnit Objectives:
bulletto understand the fundamental and derived units of the metric system
bulletto master metric unit conversions using the factor-label method and dimensional (unit) analysis
bulletto understand experimental errors:
bulletto distinguish between random and systematic errors
bulletto understand the effect random and systematic errors on experimental results
bulletto understand how to reduce the effects of errors on experimental results
bulletto distinguish between experimental errors and mistakes (i.e. computational mistakes, transferring incorrect raw data to analysis, etc.)
bulletto distinguish between precision and accuracy of a set of data
bulletto understand significant figures:
bulletto understand what is meant by the precision of a tool
bulletto determine an appropriate precision in a calculated answer
bulletTo demonstrate mastery at the skill of proper measuring and recording of experimental data

bulletUnit Activities
bullet"What is Physics?" Exploration Stations
bulletLab:  Precision/Accuracy--4-sided meter stick and marble drop
bulletmini-lab:  Use of a Vernier Caliper and micrometer
bulletLab:  density of aluminum

 

bulletKey Terms and Equations
bulletfundamental unit
bulletderived unit
bulletfactor-label method
bulletSI units
bulletaccuracy
bulletprecision of a measurement
bulletprecision of a data set
bulletrandom error
bulletsystematic error
bulletVernier caliper
bulletMicrometer
bulletsignificant figures
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bulletUnit Notes
bulletIntro to physics:  graphic organizer assignment
bulletMetrics:  units, uses, and conversions ~~notes from 9/7/10
bulletCaliper and Micrometer Lab Analysis Questions--technical difficulties...can't post them at the moment.  I'll have copies available in class tomorrow.
bulletCaliper and Micrometer Lab:  Hair Thickness and Coin Diameters Class Data tables

 

 

bulletHelpful Links
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Metric Units

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  - Fundamental and base units--definition

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  - Fundamental and Derived units--examples

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  - conversions-factor-label rules and examples:     (#1)     (#2)

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  - Rules-- be aware of and use these!

 
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Reading a Vernier Caliper
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more practice with the Vernier caliper

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simulation of reading Vernier caliper (note:  this is for practice...the calipers we use are more precise than this simulation, but it'll still get you used to it.)

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Reading a micrometer
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simulation of reading a micrometer

 

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Random vs. Systematic Errors

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Accuracy vs. Precision

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Random errors

 
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Scientific Notation
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Instructions

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Practice exercises #1

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Practice exercises #2

 

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Significant Figures
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Instructions and Practice

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Rules

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Practice #2

 

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