1. Bellringer 9/9 How do you conduct scientific research?

2. Study of living things The goal of science is to understand the world around us.

3. 3 UNIT 1 PART 1: THE SCIENTIFIC METHOD The SCIENTIFIC METHOD uses a series of steps to solve problems. All scientists try to solve problems in the same way. This allows experiments to be repeated and verified. If your experiment can’t be repeated with the same results, it is not valid.

4. Characteristics of Living Things ---highly organized ---1 or more cells ---use energy ---definite form + limited size ---limited life span ---grow ---respond to changes in the environment ---reproduce ---groups of living things change overtime

5. 5 DESIGNING AN EXPERIMENT 1.Form a hypothesis 2.Define the variables 3.Describe the materials and conditions Perform the experiment 4. Collect data 5. Interpret the data 6. Draw a conclusion

8. 1.) Define the Problem ---questionHow does fertilizer affect tulips? ---look up info about the topic 2.) HypothesisAn increase in the amount fertilizer the larger the ---educated guessplant. ---can be wrong

9. 3.) Experiment ---step by step listed ---can only change 1 thing at a time Control---part of the experiment that has not changed ---can be used to compare Variable--- the part of the experiment that has the change

10. Plant 145 g. soil 50 mL H2O SunMed. Pot 0 Fert Plant 245 g. soil 50 mL H2O SunMed. Pot 2mL Fert Plant 345 g. soil 50 mL H2O SunMed. Pot 5mL Fert Plant 445 g. soil 50 mL H2O SunMed. Pot 7mL Fert

11. 4.) Observations and Analysis ----organize information ---- Data Tables and Graphs Day 0Day 1Day 2Day 3 Plant 1 3 cm3.3 cm 3.5 cm 3.7 cm Plant 2 3 cm3.2 cm 3.6 cm 3.8 cm Plant 3 3 cm3.4 cm 3.7 cm 3.9 cm Plant 4 3 cm3.4 cm 3.8 cm 4.1 cm

12. 5.) Conclusion --- summary of if the hypothesis was correct and why --- describe if anything went wrong during the experiment --- New hypothesis and new experiment ideas 6.) Repeat the work

13. Bellringer 9/9 I want to see how a new pain medicine works compared with Advil. I have 500 people with lower back pain who volunteered to be in my study. Half of them are given the new drug and half are given Advil. What are 3 things that should be controlled for in both groups?

14. Dependent variable: the data (info) you measure (take)------ height of tulip Independent variable the part that causes the change-----amount of Fertilizer What I changed in the experiment DEPENDENT INDEPENDENT

15. Theories: Explanations that apply to a broad range of phenomena and are supported by experimental evidence Attempts to explain everything about a phenomenon including its cause –Cell Theory Law does not explain how or why something happens only that it does –Law of Gravity THEORIES AND LAWS CAN CHANGE