Physical Science Chapter 3 Test BJU

Instruments are designed to help humans observe the world around them.

• True

• False

By definition, a unit always has a value of 1.

• True

• False

Measured data consists of a number and a dimensional unit.

• True

• False

All SI units are based on physical standards stored in the International Bureau of Weights and Measures in Sevres, France.

• True

• False

The first country to standardize measurements was England.

• True

• False

The SI system has over 50 base units.

• True

• False

Metric prefixes are based on powers of 10.

• True

• False

Measurements usually do not fall directly on a scale marking.

• True

• False

Every scientific measurement contains some error.

• True

• False

If measurement is precise, it is always accurate.

• True

• False