
Episode 2: Uncertainty and Error
Authored by scott kozak
Physics
10th - 12th Grade
Used 42+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What best describes the collection of data points shown on the target, where the bulls-eye represents the desired results.
Accurate and Precise
Precise but not Accurate
Accurate but not Precise
Not Precise or Accurate
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A student measures the length of their desk with a meterstick multiple times. They get 1.21 m, 1.215 m, 1.22 m, 1.205 m. Which best describes this range of results?
systematic error
random error
low accuracy measurements
low precision measurements
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
While measuring the time it takes a toy car to travel a meter a student starts her watch when back of the car passes the starting line and stops the watch when the front of the car meets the finish line. She records 2.1s, 2.2s, 2.05s, 2.15s. What is the largest source of error in this experiment?
Systematic Error
Random Error
Human Error
The Toy Car
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A student is calculating the acceleration of a falling object. She records a distance of 20.56m and a time of 2.05s. She calculates the acceleration to be 9.784651 . What value should she record using the proper significant figures?
9.8
9.78
9.785
9.784651
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A student measures the acceleration due to gravity to be 10.0 . The accepted value is 9.81 . What is the percent error?
1.90%
1.94%
0.019%
2.02%
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