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Do Now• Copy the following two definitions:• Qualitative Data:
– Deals with descriptions.– Data can be observed but not measured.– Colors, textures, smells, tastes, appearance,
beauty, etc.• Quantitative Data:
– Deals with numbers.– Data which can be measured.– Length, height, area, volume, weight, speed,
time, temperature, humidity, sound levels, cost, members, ages, etc.
Physical Science February 3rd 2011
SWBAT identify the six steps of the Scientific Method
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Qualitative VS. Quantitative
• Qualitative: Think ‘L’ for LANGUAGE
• Quantitative: Think ‘N’ for NUMBERS
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The Scientific Method involves a series of steps that
are used to investigate a
natural occurrence.
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We shall take a closer look at
these steps and the terminology you will need to
understand before you start a
science project.
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Problem/Question
Observation/Research
Formulate a Hypothesis
Experiment
Collect and Analyze Results
Conclusion
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Steps of the Scientific Method
1. Problem/QuestionProblem/Question: Develop a question or problem that can
be solved through experimentation.
Key Words/Phrases: “Wondered”, “Wanted to”,
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Steps of the Scientific Method
2. Observation/ResearchObservation/Research: Make observations and research
your topic of interest.
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Do you remember the Do you remember the next step?next step?
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Steps of the Scientific Method
3. Formulate a HypothesisFormulate a Hypothesis: Predict a possible answer to
the problem or question.
Example: If soil temperatures rise, then plant growth will
increase.
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Steps of the Scientific Method
4. ExperimentExperiment: Develop and follow a procedure.
Include a detailed materials list.
The outcome must be measurable (quantifiable).
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Steps of the Scientific Method
5. Collect and Analyze ResultsCollect and Analyze Results: Modify the procedure if
needed.
Confirm the results by retesting.
Include tables, graphs, and photographs.
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Steps of the Scientific Method
6. ConclusionConclusion: Include a statement that accepts or
rejects the hypothesis.Make recommendations for
further study and possible improvements to the
procedure.
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Think you can name all Think you can name all six steps?six steps?
Problem/QuestionProblem/QuestionObservation/ResearchObservation/ResearchFormulate a HypothesisFormulate a HypothesisExperimentExperimentCollect and Analyze ResultsCollect and Analyze ResultsConclusionConclusion
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Work on Part I of the Scientific Method Worksheet
• Try to determine for each of the 12 situations what part of the Scientific Method is being described. – A. Recognizing the Problem– B. Forming the Hypothesis– C. Testing the Hypothesis– Drawing Conclusions
Spend 10 minutes attempting this section of the worksheet!
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Lamar predicted that seeds would start to grow faster if an electric current traveled through
the soil in which they were planted.
• B. form a hypothesis
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Susan said, “If I fertilize my geranium plants, they will
blossom.”
• B. form a hypothesis
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Jonathan’s data showed that ants moved away from
cucumber slices.
• D. draw conclusions
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Rene grew bacteria from the mouth on special plates in the
laboratory. She placed drops of different mouthwash on bacteria
on each plate.• C. test the hypothesis (experiment)
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Kathy used a survey to determine how many of her
classmates were left-handed and how many
were right-handed.• C. test the hypothesis (experiment)
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Dana wanted to know how synthetic fibers were different
from natural fibers.
• A. recognize a problem
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Edward saw bats catching insects after dark. He asked,
“How do bats find the insects after
dark?”• A. recognize a problem
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Justin wondered if dyes could be taken out of plants leaves,
flowers, and stems.• A. recognize a problem
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Davon noticed that his cactus plant wilted the day after he
watered it. • A. recognize a problem
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James discovered that when he gave his fish two different types
of food they fought with each other less
• D. draw conclusions
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Chelsea was curious about how light effects plant growth, she put one plant in the closet and
another near the window. • C. test the hypothesis (experiment)
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Sherrell told her friends that she believed if she gave herself an extra hour of sleep each night then she would be less tired in
school. • B. form a hypothesis
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For the remainder of class• Complete Scientific Method Worksheet• Go through textbook and copy ALL highlighted definitions
from Section 2 in textbook AND summary (Pages 12 19)• Begin homework
– Section Review on Page 11• Copy the Summary • Complete ALL questions in notebook
• If you finished HW yesterday, you could work on Monday’s assignment– Section Review on Page 19
• Complete questions 1 7