Chapter 3Lessons 1 and 2

Vocabulary Quiz

Measure of the force of gravity acting on an object.

•weight

A way to determine how accurate an experimental value is.

•percent error

Numerical average of a set of data.

•mean

The middle number in a set of data.

•median

Number that appears most often in a list of numbers.

•mode

The difference between the greatest value and the least value in a set of numbers.

•range

Curved upper surface of a liquid in a column of liquid.

•meniscus

System of units used by scientists to measure the properties of matter(another name for the metric system).

•SI (International System of Units)

How close a measurement is to the true or accepted value.

•accuracy

Amount of space an object or substance takes up.

•volume

Data that do not fit with the rest of the data set.

•anomalous data

Measurement system based on the number 10.

•metric system

Include all digits measured exactly, plus one estimated value.

•significant figures

Approximation of a number based on reasonable assumptions.

•estimate

Measure of how much mass is contained in a given volume.

•density

Measure of the amount of matter in an object.

•mass

How close a group of measurements are to each other.

•precision