occurs when a scientist's expectations change how the results of an experiment are viewed.
in an experiment, a variable that doesn't change when other variables change.
standard used for comparison of test results in an experiment.
mass per unit volume of a material
factor that changes, as a result of changes, in the other variables.
organized procedure for testing a hypothesis; tests the effect of one thing on another under controlled conditions.
visual display of informational data that can provide a quick way to communicate a lot of information and allow scientists to observe patterns.
educated guess; using what you know and what you observe.
factor that, as it changes, affects the measure of another variable.
amount of matter in an object.
can be used to represent an idea, object, or event that is too small, too complex, or too dangerous to observe or test directly.
statement about what happens in nature that seems to be true all the time; does not explain how or why something happens.
organized set of investigation procedures that can include stating a problem, forming a hypothesis, researching and gathering information, testing a hypothesis, analyzing data, and drawing a conclusion.
SI (International System of Units)
the improved, universally excepted version of the metric system that is based on multiples of ten and include meter(m), liter (L), and kilogram (kg).
exact, agreed-upon quantity used for comparison.
application of science to people.
explanations of things or events that is based on knowledge gained from many observations and investigations.
factor that can cause a change in the results of an expirement.
amount of space occupied by an object.