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SCIENTIFIC METHOD / EXPERIMENTAL DESIGN

Terms in this set (15)

Scientific Method
A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
Hypothesis
A possible explanation that is testable. Usually in the form of an "If...then..." statement.
Problem Statement
Defines purpose of research/guides your investigation
Research
Gather information on the problem using scientific publications; use the information to form a hypothesis
Controlled Experiment
An experiment in which only one variable is manipulated at a time.
Experiment
A set up where you change one variable at a time (independent variable) to see how it affects another variable that is measured (dependent variable).
Controlled Variable
A variable that is not changed during an experiment (Kept the same).
Independent Variable
The experimental factor that is changed; the variable whose effect is being studied
Dependent Variable
The experimental factor that is being measured; the variable that may change in response to manipulations of the independent variable
Data
Any pieces of information or values (numbers) acquired through observation or experimentation.
Conclusion
A summary that states if your hypothesis was correct or incorrect and what the investigation showed, based on observations and data.
Trial
A single repeat of an experiment or test.
Experimental Control
Making sure that only the independent variable changes between groups or trials of an experiment.
Scientific Theory
A scientific explanation of how the natural world works based on repeated support from experimentation.
Scientific Law
A "rule" that describes a pattern in nature or how the natural world works.
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