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C2: Engaging in Science Processes What kinds of things do scientists do as they engage in their work? – Question! – Research/Collect information! – Observe!

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Presentation on theme: "C2: Engaging in Science Processes What kinds of things do scientists do as they engage in their work? – Question! – Research/Collect information! – Observe!"— 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 METHOD – By luck, serendipity, a hunch, etc. When using the scientific process (Scientific Method), experiments must be performed according to specific RULES – Following 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 method............ REMEMBER 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 experiement Drink = 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. salt water) Using the textbook example… – 1) State the problem (always in the form of a question!) – 2) State the hypothesis Now 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 hypothesis 3) Name the ONE VARIABLE 4) Name at least 3 CONSTANTS 5) 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 weve learned a little bit about the rules of experimentation…lets 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 tested 2) Constants between experimental set-up & control set-up Name at least 2! 3) How/When are you going to collect your data? 4) How will you measure?

10 Summarize: 3-2-1 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


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