1. Chapter 1 continued

2.  Observation- something noted with one of the five senses

3.  2. Hypothesis- a proposed explanation to a scientific question  3. Prediction- a statement that explains what would happen in an experiment if the hypothesis were true (If…then…)  4. Experiment- used to test a hypothesis  5. Analyze data  6. Conclusion

4.  Data and conclusions are communicated to scientific peers and to the public  Why?

5.  So others can verify, reject, or modify the researcher’s conclusions

6.  1)by publishing in scientific journals  2) by presenting to peers (peer review)

7.  Sharing finding allows others to verify findings or to continue work on results that have already been produced.

8.  When scientists who are experts in the field read and critique the work of other scientists

9.  Control group  Provides a normal standard against which a scientist can compare results Experimental group One factor is different than in the control group; that factor is called the… Independent variable or manipulated variable

10.  Another factor in the experimental group is the dependent variable or the responding variable The dependent variable can be measured.

11.  Data measured in numbers Ex. The density of water is 1 g/mL

12.  Scientists are continually revising information  They also make inferences- conclusions made on the basis of facts and previous knowledge rather than on direct observations

13.  Observation?  Inference?

14.  A theory is a highly tested, generally accepted principle based on a set of related, confirmed hypotheses.