Measurement Uncertainty, Accuracy, and Precision

Question 1

Uncertainty

Answer 1

An estimate of how much a measured or calculated value differs from a true value

Question 2

Significant Figures

Answer 2

All digits that can be known precisely in a measurement, plus a last estimated digit

Question 3

Rounding

Answer 3

Expressing a number to the nearest whole number, tenth, hundredth, thousandth, and so on

Question 4

Precision

Answer 4

Consistent but not close to true value

Question 5

Accuracy

Answer 5

Inconsistent but closer to the true value

Question 6

Dimensional Analysis

Answer 6

A mathematical technique that allows you to use units to solve problems involving measurements

Question 7

Unit Conversion Factor

Answer 7

A ratio of two equivalent quantities expressed with different measurement units

Question 8

Temperature

Answer 8

A measure of how hot or cold something is

Question 9

Fahrenheit

Answer 9

A unit of temperature; water freezes at 32 degrees Fahrenheit, and boils at 212 degrees Fahrenheit