Uncertainty

Question 1

What is uncertainty?

Answer 1

-The amount of error in the measurement
-The range in which the value lies

Question 2

What is uncertainty represented by?

Answer 2

-Represented by a ± symbol
-Is always half of the smallest interval
Example:
-A reading of 3.2N, has a smallest interval of 0.1N, half of which is 0.05, meaning the uncertainty 3.2±0.05N

Question 3

How is percentage uncertainty reduced?

Answer 3

-By taking larger measurements
-By using instruments with greater resolution

Question 4

What is percentage uncertainty?

Answer 4

-It is the percentage of the result which is an uncertain value
-The smaller the percentage uncertainty, the better and more accurate the value is to the true value

Question 5

How do you calculate percentage uncertainty?

Answer 5

(Absolute Uncertainty x 100)/measurement