observation

the act of noticing and describing events or processes in a careful , orderly way

inference

logical interpretation based on observations

hypothesis

possible explanation for a set of observations or possible answer to a scientific question

controlled experiment

an experiment in which only one variable is manipulated at a time

independent variable

The experimental factor that is manipulated; the variable whose effect is being studied

dependent variable

variable that changes as a result of a change in the independent variable

control group

the group that does not receive the experimental treatment.

data

information gathered from observations

conclusions

a decision about the hypothesis based on the results of the experiment

theory

an explanation using an integrated set of principles that organizes observations and predicts behaviors or events

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