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science
Question | Answer |
---|---|
Observational investigation | an experiment that is used to discover info about objects or events,by using one or more of your 5 sences |
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 |
IV | the variable that I, the experimenter, change on purpose at the beginning of the experiment to see if it will affect anything |
DV | 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 does 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. |