Scientific Method I got 99 problems But whats

Scientific Method I got 99 problems…. But what’s the best way to solve them?

Why should we care? • Science is used by humans in an attempt to ___________________________ • Our world is very diverse and complex, and we have always been curious about how it works.

• Our curiosity causes us to ask many questions about our surroundings. The Nature of Science • Science allows us to answer these questions by studying our world using a series of steps known as the _____________

• A multi step process used to solve scientific problems as well as everyday problems. The Scientific Method: Main Idea

• Two types of observations: 1. Qualitative Observations • Def • Examples: Step 1: Observations Making Observations 2. Quantitative • Def • Examples:

Name the type of observation

• What do you want to know? • What problem(s) are you trying to solve? • These questions will be answered later using the scientific method. Step 2: Ask Questions

Step 3: Make Predictions • Choose one of your questions and predict the answer. Examples: A college student is studying hard for their final exam really one might predict they will get an A on it. A child has a fever and a sore throat, one might predict the child has strep throat.

• Def • Written as a statement given in terms of variables (Dependent & Independent) Step 3: Form a Hypothesis • When developing a hypothesis think about any observations or previous knowledge you know about the variables. • Use ______ format when writing a hypothesis

If-then format: I do this will happen. ” “If ____________, then _____ If my variables are sunlight and plant growth, a possible hypothesis might be: I increase the amount of available sunlight “If _______________________, more plant growth then ____________ will occur.

• Needs two groups to be compared 1. Control Group • Not exposed to the variable • Produces known results 2. Experimental Group Exposed to the variable you predicted be the answer to your question Step • 4: Design/Perform anto. Experiment • Produces unknown results • Only _______ variable is tested at a time while everything else stays the same

• Variables • Def. = anything that can be measured and can have multiple values • Two types Independent: Step 4: Design/Perform an Experiment Dependent: • Constants- things that stay the same in the experiment

• Make tables and/or graphs • Decide what trends are seen 160 140 120 Step 5: Analyze Data Pulse Rate in Beats Per Minute 100 80 60 40 20 0 1 2 3 Mabel - 36 year old office worker 4 Albert - 26 year old former college athlete 5

160 1. Whose pulse rate is more consistent over the exercise period? 140 120 Pulse Rate in Beats Per Minute 100 80 2. Do you think this is a good graph? Please explain why or why not. Analyzing Data 60 40 20 0 1 2 3 4 Mabel - 36 year old office worker Albert - 26 year old former college athlete 5

• Decide if your hypothesis was _______ or _______ • Is it okay for your hypothesis to be not supported? Step 6: Make a Conclusion

�Science is done to benefit society! …. �Society can’t benefit if they don’t hear about it! Step 7: Communicate Results � �Publish your findings wherever you can Share with people you work with �Put them online for anyone to read �Publish in an established journal