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What are the 3 categories of science ?
life, earth, & physical
Organized set of investigation procedures
scientific method
educated guess based on knowledge and observation
hypothesis
changes value as other variables change
dependent variable
changed to determine how it will affect the dependent variable
independent variable
A variable that does not change when other variables change
constant
the standard to which test results can be compared
control
represent ideas, events, or objects and can be physical or computerized
models
an explanation based on many observations and investigations
theory
statement about something that always seems to be true
scientific law
exact quantity that people agree to use for comparison
Standard
describes how closely measurements are to each other and how carefully they were made
Precision
compares a measurement to the real or accepted value
Accuracy
an improved version of the metric system used and understood by scientists worldwide
SI
measured using a unit appropriate for the distance between two points
length
the amount of space an object occupies
volume
