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# Scientific Method

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### Scientific Method

1. 1. Scientific MethodScientific Method
2. 2. Scientific MethodScientific Method •Steps used to gather information and solve problems
3. 3. Scientific MethodScientific Method 1. Identify a problem or question that could be tested 2. Research to find out what is already known
4. 4. Scientific MethodScientific Method 3. Form a hypothesis
5. 5. Scientific MethodScientific Method 4. Test the hypothesis (experiment)
6. 6. Scientific MethodScientific Method 5. Record and study the data 6. Form a conclusion
7. 7. Scientific MethodScientific Method 7. Communicate the results
8. 8. Key TermsKey Terms • Hypothesis- testable question • Usually an “if” “then” statement • Example:
9. 9. Key TermsKey Terms • Problem – to reduce the number of students arriving late to class • If there is a warning bell 30 sec. before each class, then • more students will arrive on time
10. 10. Key TermsKey Terms • Control- the group or subject that has all normal or standard conditions • Control group is necessary to compare the experimental groups to
11. 11. Key TermsKey Terms • Variable- a condition that could be different • Independent Variable- the only condition that is changed for the experiment • The variable that “I” change as the experimenter
12. 12. Key TermsKey Terms • An experiment should have only one independent variable • Example:
13. 13. Key TermsKey Terms • Mrs. C. wanted to test the effect of different food coloring in food chosen by students • She prepared mashed potato servings exactly the same except for the color
14. 14. Key TermsKey Terms • The dependent variable is the condition that might change as a result of the independent variable • Example:
15. 15. Key TermsKey Terms • Mrs. C. wanted to test the effect of different food coloring in food chosen by students • The dependent variable that she could observe is which potatoes the students chose
16. 16. Key TermsKey Terms •Constant- condition(s) that is/are the same for trials