NAS 2 TCC Study Guide Questions and Answers

NAS 2 TCC Study Guide Questions and Answers What is the purpose of the scientific method? - Answer-The scientific method is an organized way to study the natural world and find out how it works. What are the steps of the scientific method? - Answer-Ask a Question. Do Background Research. Construct a Hypothesis. Test Your Hypothesis by Doing an Experiment. Analyze Your Data and Draw a Conclusion. Communicate Your Results. Distinguish between independent and dependent variables - Answer-An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment. Distinguish between control and experimental groups - Answer-An experimental group is the group in an experiment that receives the variable being tested. One variable is tested at a time. The experimental group is compared to a control group, which does not receive the test variable. Distinguish between hypothesis and theory. - Answer-A hypothesis is an attempt to explain phenomena. It is a proposal, a guess used to understand and/or predict something. A theory is the result of testing a hypothesis and developing an explanation that is assumed to be true about something.