Chapter 1 Vocabulary Cards Flashcards
when what the scientist expects changes how the results are viewed
bias
A factor that does not change when other variables change
constant
the standard by which the test results can be compared
control
the mass per unit volume of a material
density
value changes according to changes in other variables
dependent variable
tests the effect of one thing on another using controlled conditions
experiment
a visual display of information or data
graph
a possible explanation for a problem using what you know and what you observe
hypothesis
the variable you change to see how it will affect the dependent variable
independent variable
a measurement of the quantity of matter in an object
mass
represents an idea , event, or object to help people better understand it
model
a statement about what happens in nature and that seems to be true all the time
scientific law
an organized set of investigation procedures
scientific method
International system of units
SI
an exact quantity that people agree to use to compare measurements
standard
