Measurement Uncertainty

Question 1

Which of the following measurement tools has greater measurement uncertainty: a meter stick that measures to the nearest centimeter (1 cm = 0.01 m) or a ruler that measures to the nearest millimeter (1 mm = 0.001 m)?

Answer 1

meter stick

Question 2

Which of the following measurement tools has greater measurement uncertainty: a beaker that measures to the nearest 10 mL or a graduated cylinder that measures to the nearest 0.5 mL?

Answer 2

beaker

Question 3

Which statement(s) is/are TRUE about measurement uncertainty?

a
All measurements have some uncertainty in them.

b
Highly accurate measurements are obtained from measuring devices with high uncertainty.

c
It is possible to remove all uncertainty by designing very high quality measuring devices.

d
Uncertainty makes measurements less accurate.

Answer 3

All measurements have some uncertainty in them.

Uncertainty makes measurements less accurate.

Question 4

Which of the following measurement tools has greater measurement uncertainty: an analytical balance that measures to the nearest 0.0001 g or scale that measures to the nearest 0.1 g?

Answer 4

scale

Question 5

Which statement best describes the relationship between uncertainty and accuracy of measurements?

Answer 5

The greater the uncertainty, the less accurate the measurement.

Question 6

The level of possible variation in the measurement is known as uncertainty in measurements.

Answer 6

True