1. 1.3 Scientific Thinking and Processes KEY CONCEPT Science is a way of thinking, questioning, and gathering evidence.

2. 1.3 Scientific Thinking and Processes 1.3 Objectives Students will be able to identify the different elements to scientific inquiry. Students will be able to differentiate between theories and hypotheses.

3. 1.3 Scientific Thinking and Processes 1.3 Vocabulary Observation Data Hypothesis Experiment Independent Variable Dependent Variable Constant Theory

4. 1.3 Scientific Thinking and Processes Like all science, biology is a process of inquiry. Scientists make careful and systematic observations. Scientists test their hypotheses and analyze their data. Scientists form a hypothesis as a possible answer to a question. Scientists record observations as data.

5. 1.3 Scientific Thinking and Processes Biologists use experiments to test hypotheses. Observational studies allow scientists to describe a phenomenon.

6. 1.3 Scientific Thinking and Processes Experimentals allow scientists to determine what causes a phenomenon.

7. 1.3 Scientific Thinking and Processes –Independent variables are manipulated. –Constants are conditions that are kept the same. Experimental studies allow scientists to determine what causes a phenomenon. –Dependent variables are observed and measured.

8. 1.3 Scientific Thinking and Processes A theory explains a wide range of observations. Theories explain a wide range of observations and experimental results. A theory is supported by a wide range of scientific evidence. Theories can change based on new evidence.

9. 1.3 Scientific Thinking and Processes 1.3 Review 1. What role do hypotheses play in scientific inquiry? 2. What is the difference between an independent variable and a dependent variable? 3. How is the meaning of theory in science different from the everyday use of the term? 4. How are hypotheses and theories related? 5. Give examples of different ways in which observatinos are used in scientific theory. 6. Why is the statement “All life is made of cells” an example of a theory? Explain