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PS Ch 1

vocab

TermDefinition
Scientific Method 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 conclusions.(page 7)
hypothesis educated guess using what you know and what you observe. (page 8)
experiment organized procedure for testing a hypothesis; tests the effect of one thing on another under controlled conditions. (page 8)
variable factor that can cause a change in the results of an experiment. (page 9)
dependent variable factor that changes as a result of changes in other variables. (page 9)
independent variable factor that, as it changes, affects the measure of another variable. (page 9)
constant in an experiment, a variable that does not change when other variables change. (page 9)
control standard used for comparison of test results in an experiment. (page 9)
bias occurs when a scientist's expectations change how the results of an experiment are viewed. (page 10)
model can be used to represent an idea, object, or event that is too big, too small, too complex, or too dangerous to observe or test directly. (page 11)
theory explanation of things or events that is based on knowledge gained from many observations and investigations. (page 12)
scientific law statement about what happens in nature that seems to be true all the time; does not explain why or how something happens. (page 12)
technology application of science to help people. (page 13)
Created by: mariannareyes