Experiment No. 1

Metric System

This is the basic system used in the country. It derives its name from the basic unit, the meter.

meter-kilogram-second system

Today, scientists of all nations use the metric, centimeter, gram, second (c. g. s), system, in which the centimeter is the unit of length, the gram is the unit of mass, and the second is the unit of time.

Precision

The ______ of a numerical value means the agreement between such value and another obtained by duplicate measurements under similar conditions.

Accuracy

The _______ of numerical result means the degree of agreement between it and true value.

Volume

refers to the amount of space an object occupies.

Weight

It is the force exerted on an object due to gravity.

Density

It is how much mass is packed into a certain volume.

Temperature

It is a measure of how hot or cold something is.

Mass

It is the amount of matter in an object.

Because the spilled liquid can affect the accuracy of the measurement.

Why is there any need to wipe-off any spilled liquid from the side of the cylinder before weighing?