Presentation on theme: "C2: Engaging in Science Processes"— Presentation transcript:
1 C2: Engaging in Science Processes What kinds of things do scientists do as they engage in their work?Question!Research/Collect information!Observe!Hypothesize/Predict/Infer!Test/Experiment!Collect/Analyze Data!Conclude!MANY OTHERS!!!
2 C3: Engaging in Inquiry—Designing & Conducting Experiments Science solves problems in 2 ways:By a process called the SCIENTIFIC METHODBy luck, serendipity, a “hunch”, etc.When using the scientific process (Scientific Method), experiments must be performed according to specific RULESFollowing these rules allows the scientists to be confident that the evidence/results found clearly SUPPORTS or DOES NOT SUPPORT the hypothesis
3 The Scientific Method: A Systematic way of Problem Solving To remember the scientific methodREMEMBER THE FOLLOWING SENTENCE:Paul = PROBLEM (in the form of a question)Ran = RESEARCH (observe, read, learn about the problem)Home = HYPOTHESIS (make an educated guess based on the research)To = TEST by doing an experiementDrink = DATA (collect and analyze data)Cool = CONCLUSION (was your hypothesis right or not?)Rootbeer = REPEAT (repeat the experiment to be sure of your results)
4 THE RULES (of experimentation): There must be 2 set-ups:1 will be the “experimental set-up”1 will be the “control set-up”Everything EXCEPT for the factor being tested (“variable”) must be EXACTLY THE SAME (“constant”)!This allows scientists to be confident that whatever results are produced are produced BECAUSE OF THE VARIABLE
5 Ex. ) Experiment in your text…p. A18-A24 (Freezing points of fresh vs Ex.) Experiment in your text…p. A18-A24 (Freezing points of fresh vs. salt water)Using the textbook example…1) State the problem (always in the form of a question!)2) State the hypothesisNow examine the experiment… (use picture on p. A21 to help!)3) Name 4 “constants” within the experiment (things that are the same for both the experimental set-up AND the control set-up)4) Name the variable (the ONE factor being tested; the ONLY thing that is different between the experimental set-up AND the control set-up)
6 SUMMARIZE!Using what you have learned, tell why it is important to only have ONE VARIABLE in the experiment.
7 Using the Laboratory Investigation in your text p. A34……….. 1) State the problem (always in the form of a question!)2) MAKE a hypothesis3) Name the ONE VARIABLE4) Name at least 3 CONSTANTS5) When/How would you observe & collect data on this experiment? (How often will you observe? How will you measure?)
8 DESIGNING AN EXPERIMENT: Problem Solving p. A25 (turtle eggs) Now that we’ve learned a little bit about the rules of experimentation…let’s try planning an experiment on our own!PROBLEM: Does the temperature (variable) of turtle eggs affect whether the eggs become male or female?HYPOTHESIS: Turtle eggs develop into male turtles in cold temperatures and into female turtles in warm temperatures.Design a simple experiment to show if the hypothesis is or is not correct. Make sure your experiment has an experimental setup AND a control setup!
9 MY Turtle Egg EXPERIMENT: 1) “Variable” being tested2) “Constants” between experimental set-up & control set-upName at least 2!3) How/When are you going to collect your data?4) How will you measure?
10 Summarize:3 – Tell 3 steps in the scientific method 2 – Tell 2 important rules you learned about setting up an experiment 1- Tell 1 thing you are confused about or would like to review again