A3 Measurements and Uncertainties Flashcards
1
Q
What is a zero error ?
A
When an measuring instrument doesn’t read zero when it should
2
Q
How are uncertainties combined when 2 or more measurements are multiplied or divided by each other
A
The percentage uncertainties are added together
3
Q
How are uncertainties combined when 2 or more measurements are added or subtracted
A
The absolute uncertainties are added together
4
Q
How can the uncertainty in the gradient of a straight line graph be found
A
By finding the biggest difference between the gradient of the best fit line and the gradient of a worst acceptable line
