
Understanding Uncertainties in Physics Experiments
Interactive Video
•
Physics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the absolute uncertainty when using a millimeter ruler?
0.5 millimeters
1 millimeter
2 millimeters
0.1 millimeters
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the absolute uncertainty indicated in digital instruments?
By the decimal point
By the middle digit
By the last digit
By the first digit
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate percentage uncertainty?
Absolute uncertainty divided by experimental value, times 100
Absolute uncertainty times experimental value, divided by 100
Experimental value divided by absolute uncertainty, times 100
Experimental value times absolute uncertainty, divided by 100
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percentage uncertainty of a measurement with an absolute uncertainty of 0.01 and a value of 5.46?
18%
0.018%
1.8%
0.18%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When adding two quantities, how do you determine the total absolute uncertainty?
Divide the absolute uncertainties
Subtract the absolute uncertainties
Multiply the absolute uncertainties
Add the absolute uncertainties
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you have two voltages, 5.0 ± 0.1 V and 4.0 ± 0.2 V, what is the total voltage?
8.0 ± 0.2 V
8.0 ± 0.3 V
9.0 ± 0.3 V
9.0 ± 0.2 V
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you combine uncertainties when multiplying two quantities?
Add the percentage uncertainties
Subtract the percentage uncertainties
Multiply the absolute uncertainties
Add the absolute uncertainties
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