*phone and backpack behind my desk SCIENTIFIC METHOD Good morning! *phone and backpack behind my desk *all you need is your notebook and pen/pencil

Bellringer (write on the left hand side) Write the instruction for making a peanut butter and jelly sandwich on a sheet of paper

Tada! The Five Steps of the Scientific Method Everyday Science Scientific Method in everyday life Car will not start =____________ Out of gas? = _________________ Adding gas and seeing if car starts = ___________________________ Car doesn’t start = _____________ It wasn’t out of gas = _____________________________ (disproves hypothesis this time) Tada! The Five Steps of the Scientific Method

Tada! The Five Steps of the Scientific Method Everyday Science Scientific Method in everyday life Car will not start =____________ Out of gas? = _________________ Adding gas and seeing if car starts = ___________________________ Car doesn’t start = _____________ It wasn’t out of gas = _____________________________ (disproves hypothesis this time) Tada! The Five Steps of the Scientific Method what you see (OBSERVATION) an idea, explanation (HYPOTHESIS) testing your idea (EXPERIMENT) what happened, results (DATA) what you learned (ANALYZE DATA TO MAKE CONCLUSION)

NOTE TO STUDENT ANY NOTE YOU COPY FROM THE BOARD GOES ON THE LEFT HAND SIDE OF YOUR NOTEBOOK!!!! Glue in your notes on the left side of your notebook

Scientific Method 1. Observation: Notice there is a problem or question to be answered 2. Hypothesis: Scientific Explanation (an If...Then… statement) 3. Experiment: Test your hypothesis 4. Data: Collect information -5. Analyze Data 6. Modify if needed or Communicate Results

Experiment Control: used to compare experimental results. Does not receive any experimental treatment/changes Variable: Factor changed during experiment Independent Variable: What is changed. Will affect the outcome of the experiment Dependent Variable: Results of the experiment

Data X axis: Independent Variable Y axis: Dependent Variable

Qualitative vs Quantitative Data Quantitative → Quantity Quantitative: Deals with numbers. Data which can be measured. Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc. Qualitative → Quality Qualitative: Deals with descriptions. Data can be observed but not measured. Colors, textures, smells, tastes, appearance, beauty, etc.

Analyze Results What does your data mean? Was your hypothesis supported? If results are support hypothesis, communicate and publish results. 2. If results are not consistent with hypothesis, modify experiment.

Conclusion 1. Experiment must be repeatable. 2. Theory versus Law -Theory is subject to change as more knowledge is gained. “Theory of Evolution” -Laws are universally accepted to be true. “Law of Gravity”

Law vs Theory Law- Well supported explanations/principle that appears to be without exception at the time it is made. Ex.: Law of Gravity Theory- A scientific theory summarizes a hypothesis or group of hypotheses that have been supported with repeated testing. Law of conservation of energy Law of conservation of mass Theories: no one was actually there to observe it happen (the big bang), or you cannot test every single living thing (cell theory) Ex.: The Big Bang Theory The Cell theory

Everyday Science Scientific Method in everyday Car will not start =Observation Out of gas? = Hypothesis Adding gas and seeing if car starts = Experiment Car doesn’t start = Data/Results It wasn’t out of gas =Conclusion/ Revise (disproves hypothesis this time)

Vocabulary A hypothesis is a tentative explanation of a phenomenon; Independent or manipulated variable – what is changed during the experiment Dependent or responding variable – what is measured Constant or fixed variables –parts in the experiment that are kept constant. Experimental group – group exposed to the independent variable. Control group – used to compare against the experimental group

WE DO: Alka-Seltzer Experiment

Independent Practice Finish working on your lab report by yourself. You must do so quietly and independently. You may use your notes to help you. This activity will count as a grade.

EXIT TICKET PUT EVERYTHING AWAY WORK QUIETLY ON THE EXIT TICKET