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Physics Chapter 1, Section 2
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Transcript of Physics Chapter 1, Section 2
PHYSICS CHAPTER 1, SECTION 2
Measurement: Errors, Accuracy, and Precision
August 13, 2010HW: Physics to Go (PTG)-pg. 32, #6-9
Do Now (NB pg. 6) Turn in Current Event WDYS & WDYT-
TB pg 22
Success Criteria Calibrate the length of a
stride Measure a distance by pacing
it off and by using a meter stick
Identify sources of error in measurement
Evaluate estimates of measurements as reasonable or unreasonable
Complete various metric conversions
Agenda: Collect CE Do Now 1.2 Measurement:
Errors, Accuracy, and Precision
Physics Talk Metric Mania Quiz 1.2 Homework:
PTG, pg. 32, #6-9
Investigate pg. 23-24
August 17, 2010HW: Finish PTG #6-9
Do Now (below data for 1.2 in notebook): What is the difference
between a systematic error and a random (human) error?
In your groups answer #9 on TB pg. 24 in your notebooks, be prepared to share out You may use a
computer, meter stick or tape measure to help you with the conversions
Agenda: Do Now Success Criteria 1.2 Measurement: Errors, Accuracy, and
Precision Physics Talk Metric Mania Quiz 1.2
Homework: PTG, pg. 32, #6-9
Success Criteria Calibrate the length of a stride Measure a distance by pacing it off and
by using a meter stick Identify sources of error in measurement Evaluate estimates of measurements as
reasonable or unreasonable Complete various metric conversions
Physics Talk
What are Random Errors?
Produced by measuring tools and human mistakes
Cannot be corrected by calculations
Can never be eliminated
Physics Talk
What are Systematic Errors?
Can be avoided Corrected by
calculations Example: If I
accidentally measured in inches, when I was supposed to measure in centimeters, I could convert to get the right numbers
Physics Talk
What is accuracy?
What is precision?
How close to an accepted value
Example: Shooting on goal in soccer
Frequency of results Always hit close to the
same spot Example: Always missing
wide right when shooting the ball in soccer
Metric Conversions Ladder Method
T. Trimpe 2008 http://sciencespot.net/
Metric Conversions Ladder Method
T. Trimpe 2008 http://sciencespot.net/
August 18, 2010HW:PTG pg. 32 #6-9
Do Now: In your notebook (below notes) answer the following: WDYTN? TB Pg. 30 Reflecting on the Section Challenge:
TB pg. 31 How will what you learned in 1.2 help you
with your chapter challenge (pg. 3)
Success Criteria Calibrate the length of a stride Measure a distance by pacing it off
and by using a meter stick Identify sources of error in
measurement Evaluate estimates of measurements
as reasonable or unreasonable Complete various metric conversions
Agenda: Collect Metric
Mania Do Now Success Criteria 1.2 Quiz PTG pg. 32 #6-9
Quiz 1.2