Physical Science Day 3

Chapter 1 Introduction to Science Section 2 The Way Science Works p. 12

Know the steps to the scientific method Objectives Know the steps to the scientific method Discern the importance of technology Analyze the procedures of experimental design

I. Science Skills A. Critical thinking- making observations and using logic to arrive at conclusions B. Scientific Method- series of steps followed to solve problems (not rigid rules, but a guideline) 1. Identify a problem(ask a question!) 2. Hypothesis- if/then format (If IV, then DV) 3. Experiment (See point C)

4. Collect Data (both quantitative and qualitative) Draw Conclusions 5. Theory (can be more formal, repeated experiments can lead to this) 6. RETEST- only a valid experiment if results can be repeated

Physical Science Day 3

Chapter 1 Introduction to Science Section 2 The Way Science Works p. 12

C. Testing Hypotheses/Experimental Design 1. Control Group-do nothing for comparison 2. Controlled experiment- one in which only one variable can be changed at a time a. Variable- part of an experiment that can be changed b. Constant- a variable that is not changed in an experiment 3. Independent Variable (IV)- factor that you change in the experiment 4. Dependent Variable (DV)- the change that occurs because of the IV

5. Confounding Factor- variable that changed the experiment that you did not intend 6. Document results and procedures

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