the scientific method. steps of the scientific method the scientific method is used by all...
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The Scientific Method
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Steps of the Scientific Method
The Scientific Method is used by all Scientists
The Scientific Method is made up of many parts called “steps”
The Scientific Method can be described as having anywhere from 5-8 steps which are sometimes given different names
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Steps of the Scientific Method
Remember these 6 steps: Identify the Problem Collect Information Form a Hypothesis Design and Carry Out an
Experiment Analyze Data Draw Conclusions
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STEP 1: Identify the Problem
What problem needs to be solved? What question needs to be answered?
The PROBLEM is always stated in the form of a question.
Example: Which type of soda will help radish seeds grow best?
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STEP 2: Collect Information Your textbook or other resources
can provide you with information before you make a hypothesis Example: Look on the back of the
radish seed packet to get information, look online to find what type of growing conditions radishes prefer, or buy a gardening book
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STEP 3: Form a Hypothesis
Use your prior knowledge and any new information you have collected
A HYPOTHESIS is a prediction or statement that can be tested Example: IF radish seeds are grown
in Hawaiian Punch, THEN they will grow tallest.
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STEP 4: Design and Carry Out Experiment
Variables are what are tested in an experiment (dependent & independent)
Only one variable is changed at a time. Independent Variable: the variable that is
changed. AKA-manipulated variable; X-axis Example: The type of liquid (diet coke, sprite, etc.)
Dependent Variable: the factor being measured.AKA-responding variable; Y-axis
Example: The height of the radish plant.
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STEP 4: Design and Carry Out Experiment (continued)
Constants: the variables that stay the same Example: same amount of liquid, same
amount of light, same number of seeds, etc.
Control: a sample that is treated exactly like the other experimental groups except that the independent variable is not applied to it It is under normal conditions
Example: The radish plant given water
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STEP 4: Design and Carry Out Experiment (continued)
Number of Trials: to make sure that you are getting valid results, you will need to repeat the experiment several times
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STEP 5: Analyze Data
Organize data by putting it into graphs, tables, and charts
Type of Liquid Plant Height (in cm)
Diet Coke 5 cm
Sprite 0 cm
Hawaiian Punch 10 cm
Water 15 cm
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STEP 6: Draw Conclusions Does your data support your
hypothesis? If the data supports the hypothesis,
repeat the experiment to verify. If the data does not support the
hypothesis, change your hypothesis and try again.
Why did you get these results? What might have happened that
could affect your results?
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STEP 6: Draw Conclusions
REMEMBER - There are no wrong hypothesis! There are only results that
don’t support your hypothesis
Sample Conclusion: Hawaiian Punch is the best liquid for radish growth
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