2. Three Scientists, Three Individuals  Carl Sagan-Astronomer, Pulitzer Prize winning author  Enriqueta Barrera-Geologist, Paleontologist  Evan B. Forde-National Oceanic and Atmospheric Administration Researcher

3. Different Lives, Common Goals  Scientists have in common the scientist’s mind  A way of looking at the world with both logic and a sense of wonder

4. Qualities of Scientific Thinking  Scientists are observant  Scientists are creative  Scientists are skeptical  Evidence- material or data that can be measured to verify or test a prediction  Hypothesis-tentative explanation for an observation  Technology-Application of science to meet human needs

5. Scientific Methods of Inquiry  Creativity and logic play a large role in science

6. How Scientists Approach Questions  Some questions are answered by experimentation  Some questions are answered by observation  Scientific inquiry generally involves  Observing  Asking questions  Forming a hypothesis,  Gathering data  Testing the hypothesis  Sharing results

7.  Scientific inquiry generally involves, observing, asking questions, forming a hypothesis, gathering data, testing the hypothesis, and sharing what has been learned.  Not every question can best be answered by doing an experiment.

8.  The best way to figure out what was going on was to collect data.  A look at the approach taken by one scientists can illustrate how scientists approach questions.

9. Applying Scientific Inquiry  Observe- wells going dry  Question- was the new subdivision the cause  Experiment- by measuring the water table over time  Hypothesis-water table was recharged by spring runoff  Test hypothesis measuring water from mountain stream to river  Share results

10. Scientific journals differ from magazines because of peer review. Several ideas have been advanced and disproved.

11. Scientists need to be willing to ask questions and experiment. Scientists need to be willing to ask questions and experiment. Also, they need to be willing to change their minds about their hypothesis if the evidence they gather does not support it. Also, they need to be willing to change their minds about their hypothesis if the evidence they gather does not support it.

12. A theory is an explanation for observable events or facts for which no exception has been found. A theory is an explanation for observable events or facts for which no exception has been found. Scientific laws are different from theories. Scientific laws are different from theories. They are generalizations about how the natural world behaves under certain conditions. They are generalizations about how the natural world behaves under certain conditions.

13. Science has a lot of impact on your daily life. Learning can be easier when you’re younger, and that’s part of the reason your parents turn to you for help with technological devices around your house. The rate of technological development isn’t likely to slow down.

14. Scientists use a variety of tools in their inquiries. For example, computers, and satellites, are complex and may cost billions of dollars.

15. ► In geology, which is the scientific study to Earth’s structure, a simple rock hammer is an important tool. ► In the laboratory, geologists may use a crusher to pulverize a specimen for chemical analysis. ► Geologists also use laser range finders for measuring distance, clinometers, magnetometers, and gravimeters.

16. In the scientific study of weather and climate, meteorology, scientists use a variety of instruments. In the scientific study of weather and climate, meteorology, scientists use a variety of instruments. Astronomy is the scientific study of the universe. Astronomy is the scientific study of the universe.

17.  Not all of the earth scientist’s tools were developed for purely scientific reasons.  Two tools in particular have revolutionized earth science: the computer and the satellite.  Like computers, satellites are useful to earth scientists in all fields.