Chapter 1: The Nature of Science

Prefixes

________ are used with the names of the units to indicate what multiple of ten should be used with the units.

Model

________: represents an idea, event, or object to help people better understand it.

SI System

The ________ is easy to use because it is based on multiples of ten.

Zero

________ on the Kelvin scale (0 K) is the coldest possible temperature, also known as absolute ________.

Bar Graph

A(n) ________ is useful for comparing information collected by counting.

Mass

________: a measurement of the quantity of matter in an object.

Hypothesis

________: a possible explanation for a problem using what you know and what you observe.

Density

________: the mass per unit volume of a material.

Conversion Factor

A(n) ________ is a ratio that is equal to one and is used to change one unit to another.

Graphs

________ make it easier to understand complex pat- terns by displaying data in a visual manner.

Scientific Law

________: a statement about what happens in nature and that seems to be true all the time.

Bias

________: occurs when what the scientist expects changes how the results are viewed.

Scientific Method

________: An organized set of investigation procedures.

Line Graphs

________ often show how a relationship between variables changes over time.

Circle Graph

A(n) ________, or pie graph, is used to show how some fixed quantity is broken down into parts.

Technology

________: the application of science to help people.

Standard

________: an exact quantity that people agree to use to compare measurements.

y axis

The ________ always is used for the dependent variable.

Theory

________: an explanation of things or events based on knowledge gained from many observations and investigations.

Volume

________: The amount of space occupied by an object.

Graphs

________ are useful for displaying numerical information in business, science, sports, advertising, and many everyday situations.

Graph

________: a visual display of information or data.

Dependent Variable

value changes according to the changes in the other variables

Independent Variable

variable you change to see how it will affect the dependent variable

Constant

A factor that does not change when other variables change

Control

the standard by which the test results can be compared