1. & 11. Measuring

Question 1

Accuracy v precision

Answer 1

Accuracy: Close to target
Precision: trials close to each other
(think of a dark board)

Question 2

Absolute uncertainty (AU)

Answer 2

Half the smallest increment on the measuring device.

Added when adding or subtracting

Question 3

Relative/percentage uncertainty (PU=RU)

Answer 3

AU/reading.

Added when multiplying or dividing

Question 4

Working method for calculating whether or not the result is successful

Answer 4

1. Calculate the uncertainty (AU or PU=RU)
2. Calculate the percentage error (PE)
   See if the uncertainty is larger than the PE

Question 5

Percentage error

Answer 5

(|table value - experimental value|) / table value