The scientific method is an organized way to solve a problem

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The scientific method is an organized way to solve a problem
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The scientific method is an organized way to solve a problem

Steps of the Scientific Method B2 State the ___________________ Formulate a question that needs to be answered 2. Propose a hypothesis A hypothesis is an educated guess about what the solution to the problem is. 3. ____________the hypothesis. Testing is done through experimentation. All experiments should contain a variable or a condition which can be changed. Experiments also include a control in which no change is made. The control serves as the reference.

Steps of the Scientific Method B3 4. Observations and _________. The results of the experiment are recorded as data. Observations are made with our sense and instruments 5. Analysis & Conclusions The data from the experiment needs to be looked at and analyzed. After this is done, a conclusion or answer to the problem 6. _________________ Conclusions must be reported so that other scientists can repeat the experiments

Laws & Theories B4 When a hypothesis has been put through the steps over and over again, it may become scientific theory (ex. Theory of Evolution, Theory of Relativity) A __________is a theory that has been proved so thoroughly over a long period of time that it is considered a fact or truth (ex. Law of Gravity)

Example of the Scientific Method B5 Example of the Scientific Method: Problem: Does the green plant need sunlight to survive? Hypothesis: A green plant will wilt and die if kept in the dark. Test of hypothesis (experiment): Take two plants of the same type, size and in the same soil. place one in sunlight (the control) place the other in complete darkness (variable) water each plant at the same time every day with the same water Make Observations: Record in writing the differences you observe between the two plants. Conclusion: Analyze the observations and draw your conclusions. Repeat the Experiment: Do another experiment to assure the same results.

Independent & Dependent Variables ________________ Variable: A variable that is controlled by the experimenter; the ONLY one over which YOU have direct control. ______________Variable: The thing that you measure in the experiment (Ex. Height of plant) Conventionally the independent variable is plotted on the horizontal axis (also known as the x-axis) and the dependent variable on the vertical axis (or the y-axis)

Independent & Dependent Variables