Chapter 1 Vocabulary Cards
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bias
When what the scientist expects changes how the results are viewed.
constant
A factor that does not change when other variables change.
control
The standard by which the test results can be compared.
density
The mass per unit volume of a material.
dependent variable
Factor that changes as a result of changes in the other variables.
experiment
Organized procedures for testing a hypothesis; test the effect of one thing on another under controlled conditions.
independent variable
Factor that, as it changes, affects the measure of another variable.
mass
A measurement of the quantity of matter in an object.
model
Represents and idea, event, or object
Scientific law
A statement about what happens in nature and that seems to be true all the time.
Scientific method
A organized set of investigation procedures
SI
The improved, universally accepted version of the metric system on multiples of tens and includes meter, liter , and kilogram
standard
A exact quantity that people agree to use to compare measurements.
technology
Application of science to help people.
theory
A explanation of things or events based on knowledge gained from many observations and investigations.
variable
A quantity that can have more than a single value.
volume
volume
graph
a visual display of data.
hypothesis
An educated guess about the likely solution to a problem.