Chapter 1 Vocabulary Cards Flashcards
bias
Occurs 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
It’s the mass per unit volume of a material
dependent variable
Its value changes according to the changes in the other variables
experiment
test the effect of one thing on another using controlled conditions
graph
A visual display of information or data
hypothesis
a possible explanation for a problem using what you know and what you observe
independent variable
The variable you change to see how it will affect the dependent variable
mass
A measurement of the quantity of matter in an object
Model
represents an idea, event, or object to help people better understand it
scientific law
A statement about what happens in nature and that seems to be true all the time
Scientific method
An organized set of investigation procedures
SI
standards are universally accepted and understood by scientists throughout the world
standard
an exact quantity that people agree to use to compare measurements
