A3 Measurements and Uncertainties Flashcards

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1
Q

What is a zero error ?

A

When an measuring instrument doesn’t read zero when it should

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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

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3
Q

How are uncertainties combined when 2 or more measurements are added or subtracted

A

The absolute uncertainties are added together

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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

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