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Scientific Method
Term | Definition |
---|---|
Observational Investigation | an experiment that is used to discover information about objects or events by using one or more of our 5 senses |
Experimental Investigation | an experiment that tests a hypothesis to see if changes in the independent variable affect the outcome (the dependent variable) |
Variables | things in an experiment that change or can be changed |
Independent Variable | the variable that I, the experimenter, change on purpose at the beginning of the experiment to see if it will affect anything |
Dependent Variable | the variable that changes or responds to what the scientist did |
Hypotheses | a prediction of how the IV will affect the DV |
Constants | parts of the experiment that do not change |
Control | An experiment is done without testing the IV to see what the normal outcome is. |
Repeated Trials | the number of times you do the experiment or the number of objects or organisms that are tested. |
Purebreed | Both alleles are the same (either two dominant or to recessive) |
hybrid | Two different alleles for a trait (one dominant and once recessive) |