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Scientific Method
Parts of the Scientific Method
| Term | Definition |
|---|---|
| dependent variable | measured to show the relationship between variables |
| independent variable | experimenter changes or manipulates |
| control group | group that does not receive any treatment; it stays the same throughout the experiment |
| experimental group | group that receives the treatment throughout the experiment |
| hypothesis | educated guess based on observations; must be testable |
| analysis | representation of the data collected in the form of graphs, charts and/or tables |
| experiment | tests the hypothesis, produces data |
| observations | based on your senses; can be qualitative (descriptions) or qualitative (using numbers) |
| control variable | variable that does not change throughout the experiment |
| how to write a hypothesis | if...then statement; if the independent variable increases then the dependent variable increases/decreases |
| conclusion | summary / judgement based on the results of the experiment; states whether the hypothesis is supported or rejected |
| problem | written in the form of a question; it is what you want to solve or answer through the experiment |
| experiment | series of steps that tests your hypothesis |
| how to write a conclusion | As the independent variable...the dependent variable... |
| Science is a cycle | it is always changing, never ending; it is a fluid process that is repeatable |
| how to write a problem | How does the independent variable affect the dependent variable? |
| Example of an observation | The road is wet |
| Example of an inference | It must have rained |
| inference | an explanation of an observation |