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LC Bio Chapter 1

Scientific Method

Biology The study of life.
Scientific method A process of investigation carried out in order to explain observations made in the natural world.
Observation The taking in of information received about the natural world.
Hypothesis An educated guess or an idea based on an observation.
Experiment A test to determine the validity of hypothesis.
Data The results of measurements or observations.
Conclusion An explanation of the results.
Theory A comprehensive explanation of an important aspect of nature supported by results gathered over a long period of time.
Law/Principle A definite, factual explanation of an important aspect of nature.
Variable A factor that is changed in the course of an experiment.
Control A factor in an experiment that provides a standard with which the results of the experiment may be compared.
Random selection The process of choosing, without method or conscious choice, subjects or items to be scientifically tested
Replicate A repeat of an experiment.
Double-blind testing An experiment where neither the tester nor the patient knows what treatment is being given.
Placebo A substance with no active medication used as a control in an experiment.
Created by: gomahony