Uncertainty

Which of these measuring devices will have the most precise results?

• Graduated cylinder

• Beaker

• Biuret

What is the average and uncertainty value of the data set below?

• Average =

  15.35 ±0.10

• Average =

  15.35 ±0.03

• Average =

  15.35 ±0.33

• Average =

  15.35 ±0.01

Which type of error would give the results shown here?

• Random

• Systematic

• No errors seen

Determine the percent uncertainty of the digital pH meter

• 0.01%

• 0.1%

• 7%

• 99%

Determine the percent uncertainty of the graduated cylinder

• 0.8%

• 0.1%

• 7%

• 99%

Which shows a precise but not accurate aim?

• Exp I

• Exp II

• Exp III

• Exp IV

Tags

NGSS.MS-PS3-1

How many certain digits should the measurement of the pink bar have?

• 3

• 2

• 1

• 0

How many uncertain digits should the measurement of the pink bar have?

• 3

• 2

• 1

• 0

What is the principle of uncertainty in quantum mechanics known as?

• Heisenberg Uncertainty Principle

• Pauli Exclusion Principle

• Schrödinger's Cat

• Planck's Constant

Which of the following measurements has the greatest uncertainty?

• 12.3 ± 0.1

• 12.3 ± 0.01

• 12.3 ± 0.001

• 12.3 ± 0.0001