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
The mass per unit volume of a material.
Dependent Variable
A factor that changes as a result of changes in the other variables.
Experiment
Tests 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
International System of Units. The standard that is universally accepted and understood by scientists all over the world.
Standard
An exact quantity that people agree to use to compare measurements.
