Practicing Good Science Physics August 31(A)/September 1(B)

Objectives identify parts of the scientific method evaluate why scientist use the scientific method and the international system of units

Why is it important to know the rules?

Some of the Rules Topic International system of units Facts SI units Allow for a universal measurement system MeasurementSymbolDefinitionSI units DistancedHow long something is How far something is How high something is m, cm, km TimetHow long something takes to do s, h MassmHow much inertia or matter something has g, kg

More about SI units Topic How to convert between units? What is bigger or smaller? Facts Base = no prefix Kilo = 1000 bigger than base Centi = 1/100 smaller than base Milli- 1/1000 smaller than base MeasurementBaseKilo-Centi-Milli- Distance 1 Meter 1 m km100 cm1000 mm Mass1 gram 1 g kg100 cg1000 mg

Let’s Practice Convert the following 500 g = _____ 5 km = _____m 100 cm = _____ m Fill in the blank with greater than, less than, or equal to. 25 m ____ 2.5 km 1000 kg _____ 1 g 1 mm _____ 1 cm _____m _____ km

Some of the Rules Topic Scientific method Facts 1.Ask questions 2.Make a prediction- hypothesis 3.Experiment Collect data 4.State conclusion based on results 5.Apply, publish, and share work

Some of the Rules Topic How do we record our work as we explore the scientific method? Facts 1.Title 2.Experimental Question/Problem 3.Hypothesis 4.Materials 5.Procedure (with lab safety, dependent and independent variables) 6.Data 7.Analysis 8.Conclusion 9.Discussion

Let’s Apply these ideas Complete at least one of the lab exercises, and record the information in your lab notebook. This will be a model for how to complete future lab exercises.

Closing What is the value of the scientific method? Why make a hypothesis? Why should one consider the independent, dependent and control variables? How did everyone’s results compare? What would you have to do in order for the conclusion to be accepted by the larger science community?

Homework Review the lab safety contract and basic measurement for a quiz next class. You must pass the quiz with an 80% or higher before participating in the next lab Due Sep 7- Part I Read the article and post a response to the blog on the website Due Sep 9- Part II Respond to one post