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Scientific Method

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Ashley Randolph

on 31 August 2016

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Transcript of Scientific Method

The Scientific Method
Scientific Method
What is the scientific method?
A series of steps used to solve a problem.
The scientific method helps us to expand our knowledge. The more we observe, question, and experiment the more we learn about the world around us.

Step #1: Make an observation
After making an observation, define the problem and make sure only one problem is being studied
Step #2: Ask a question
-Research the problem
-Use all available resources to collect data on the subject being covered
-What are some good, reliable resources?



Step #3: Form a hypothesis
-Make it a short definitive statement
-It should be formatted as an “If…, then…” statement
If….(what you will do/test), then…(what you expect to happen as a result)
-Your hypothesis can be changed if the results do not support it

Step #4: Do a test or experiment
-
A controlled experiment only contains one experimental variable
- What is a variable?
A word for a quantity or condition that can change

Step #5: Analyze the data and draw a conclusion
-Use tables and graphs to organize your data so that you can determine if your hypothesis is supported or not
-In your conclusion,
summarize what you did in the experiment and your results
state if your hypothesis is supported or not (do your results agree?)

Example:

Observation: Your toaster stops working
Question/Research: What is wrong with the toaster? (read the owner’s manual)
Hypothesis: If the toaster is plugged in but not working, then I will try it in a different outlet and it will work.
Experiment: I tried plugging the toaster in two other outlets and it did not work. :(
Conclusion: In conclusion, my hypothesis is supported and it is possible that something is wrong with the first outlet.

Reliable Resources:
Library, internet, books, magazines, interviews, articles, research papers

Use good judgement and common sense!
Types of Variables
- Independent variable: the thing that is being tested, what "I" as the scientist change
- Dependent variable: the variable that you observe or measure, you have no control over the outcome
The goal of conducting an experiment is to see what happens to the dependent variable when you change the independent variable
- Controlled variables: is the one that you keep the same for all of the conditions of your experiment
Full transcript