What is Metrology

The study of weather patterns

The science of measurements

The art of manufacturing

The process of chemical reactions

Is 3 feet tall

Is made of wood

Weighs 100 pounds

Smells like oak

Is deep brown

Has 15 books on it

Has golden knobs

Weighs 100 pounds

Calibration

Accuracy

Hypothesis

Precision

Units define measurements and give numbers value.

Units are only used for length.

Units are not necessary for scientific measurements.

Units are only used in the SI system.

Values close to the true value but scattered.

Values far from the true value but close together.

Values close to the true value and close together.

Values far from the true value and scattered.

Using standards with known masses

Removing the units from any values

Ignoring external standards

Estimating the values

1 dimension is length; 2 dimensions are length and width; 3 dimensions are length, width, and height.

1 dimension is width; 2 dimensions are width and height; 3 dimensions are width, height, and depth.

1 dimension is area; 2 dimensions are volume; 3 dimensions are mass.

1 dimension is height; 2 dimensions are height and depth; 3 dimensions are height, depth, and mass.

Gross (blunders)

Random

Systematic

Density

Ruler (a)

Ruler (b)

Both rulers give the same certainty

Neither ruler gives certainty