Ch. 1 The Nature of Science

Volume

________- the amount of space occupied by an object.

Life Science

Living Things

Earth Science

Investigating Earth and Space

Physical Science

Matter and Energy

Scientific Method

an organized set of investigation procedures

Hypothesis

a possible explanation for a problem using what you know and what you observe

Experiment

test the effect of one thing on another using controlled conditions

Variable

a quantity that can have more than a single value

Dependent Variable

one thats value changes according to the changes in the other variables

Independent Variable

is one that 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

Bias

occurs when what the scientists expect changes how the results are viewed

Model

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

Scientific Theory

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

Scientific Law

a statement about what happens in nature that seems to be true all the time

Technology

is the application of science to help people

SI

International System of Units

Volume

the amount of space occupied by an object

For example, cubic meters

m3

Mass

measurement of the quantity of matter in an object

Freezing point of water

0°C

Boiling point of water

100°C

Graph

visual display of information or data

The most commonly used SI units include

length-meter, volume-liter, mass-kilogram, and time-second