planning investigation unit 1.1

planning investigation unit 1.1

1. hypothesis

   • is an educated guess based on evidence and prior knowledge.

2. Experimental variables

   • A variable is a factor that can change (or vary) and may affect the result of the experiment.
     • three things an experiment must contain
       • hypothesis
       • research question
       • independent and dependent variables
   • Types of variabels
     • Independent
       • independent variables are the variables that the experimenter changes to test their dependent variable.
     • Dependent
       • what you observe (the effect of the change)
     • controlled
       • kept the same in all tests that are part of the experiment.

3. hypothesis checklist

   • Is the hypothesis based on information contained in the question?
   • does the hypothesis include the independent and dependent variables?
   • Can the independent variable change?

4. obervation

   • closely monitoring something or someone

5. experiment

   • Testing out hypothesis under controlled conditions to examine its validity

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