Scientific Method Notes

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# Scientific Method Notes - PowerPoint PPT Presentation

Scientific Method Notes. 8 th Science 2012. Scientific Method Steps. PROBLEM – Puts focus on the purpose of the experiment RESEARCH – Can use formal research methods (book, internet, research or observational study, etc.) or sometimes, only prior knowledge.

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### Scientific Method Notes

8th Science 2012

Scientific Method Steps
• PROBLEM – Puts focus on the purpose of the experiment
• RESEARCH – Can use formal research methods (book, internet, research or observational study, etc.) or sometimes, only prior knowledge.
3. HYPOTHESIS – Can be in statement form or placed in “IF – THEN” format to accentuate the independent and dependent variables. It is a statement that you THINK is the answer to the problem. This statement MUST be testable.
4. EXPERIMENT – Process of data collection; collected data is put into tables or charts. Should be a controlled experiment when possible.
• Control – The part of the experiment that does NOT change… NOT being tested.
• Variable – the part of the experiment that changes.
Experiment continued…
• Independent Variable – The variable the scientist controls…time intervals, when data is collected, scientists’ actions, etc.
• Dependent Variable – The TESTED variable that responds to the scientist’s manipulation…what is being measured.
5. ANALYSIS – Scientist discovers whether or not the data supports the hypothesis.

Graphs are used to make calculating and observing data easier to see (Bar, Line, and Pie)

Dry Mix Graphing Method
• X Axis – Independent Variable (one scientist controls)
• Y Axis – Dependent Variable (one we measured)
6. CONCLUSION – A final decision made about whether or not your hypothesis is supported by data.

Options: Test again; not enough information to decide; need more research; hypothesis was correct; or hypothesis incorrect. In all circumstances, the scientist has learned SOMETHING about the problem.

7. COMMUNICATE – This allows the scientist to share information and duplicate results or find new information about the same problem.