1 Chapter 1 Key Terms Hypothesis Controlled Experiment

1 Chapter 1 Key Terms Hypothesis Controlled Experiment Variable Experimental Group Control Group Theory Laws Universal Statements Value Judgments Qualitative Data Quantitative Data Scientific Method

2 Chapter 2 THE SCIENTIFIC METHOD

3 Scientific Method A systematic way of solving problems using observations Form a question/problem Conduct initial research State hypothesis Collect data Analyze data Draw conclusions Publish results

4 Controlled Experiment Attempts to look at just one factor/variable that could help answer the problem Variable: factor that is deliberately changed or altered Control: factor that experiences no change Control Group: Group that experiences no change in variable Experimental group: Group that experiences the independent variable

5 Controlled Experiment Independent variable The 1 factor that is different between the 2 groups Dependent The Variable difference in outcomes for both groups Data Information Qualitative: obtained from the experiment describes event or condition Quantitative: measurable or numerical data

6 Theories and Laws Theory Partially verified idea that ties together a number of different observations Law Describe nature consistent patterns of phenomena in

7 Limitations of Science 1. Must deal with observable, physical phenomena 2. Cannot establish truth 3. Limited by persons who practice it 4. Cannot prove a universal statement 5. Cannot make value judgments Decision based on the rightness, beauty, or worth of something

8 Graphs Bar Graph Line Pie Graph Chart