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What is Science?
Scientific Inquiry
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Scientific Inquiry
• The diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather.
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Scientific Inquiry
• The process of finding answers to problems by means of asking questions.
• The first step in getting the scientific method process started.
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The SCIENTIFIC METHOD is a problem solving method used to find answers to scientific questions.
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There are 6 steps to the scientific method:
1. State the question/problem.2. Collect information.3. Make a hypothesis.4. Perform an experiment.5. Record and study data.6. Draw a conclusion.
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•Every good scientist knows that they mustREPEAT THEIR WORK in order to be sure that the results of their experiment are preciseand accurate.
•What scientific attitude must a scientist possess in order to develop questions to study?
CURIOUSITY
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Hypothesis
• A possible explanation for a set of observations or answer to a scientific question.
• An EDUCATED guess.
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A hypothesis must be testable. What does this mean?
Researchers must be able to carry out investigationsand gather evidence that will either support ordisprove the hypothesis.
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Independent/Manipulated Variable
• The one variable that is purposely changed to test the hypothesis.
• Researcher is in control of this variable.
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Independent variable is on the x-axis of a graph.
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What was the independent variable in the rose lab?
The type of water in which the rose was placed. (sugar, neutral, or salt)
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Dependent/Responding Variable
• The factor that may change in response to the manipulated variable.
• Cannot be controlled by the researcher.
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Dependent Variable is found on the y-axis.
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What is the dependent variable in the rose lab?
The condition of the roses!
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Controlled Experiment
• An experiment in which only one variable is manipulated at a time.
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Was the rose lab a controlled experiment?
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YES!!!!
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Operational Definitions
• A statement that describes how to measure a particular variable or define a particular term.
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Data
• Facts, figures, and other evidence gathered through observations.
• Can be displayed in charts, tables, and graphs.
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Re-write the class data collected about favorite candy bars.
Snickers
Milky Way
3 Musketeers
Hershey’s
Reese’s Peanut Butter Cup
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Communicating
• The sharing of ideas and experimental findings with others through writing and speaking.
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What are 3 ways scientists can communicate with one
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Scientific journalsand articles
Scientific meetings
Internet
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Scientific Theory
• A well-tested explanation for a wide range of observations.
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Modern Atomic Theory
Big Bang Theory
Plate Tectonic Theory
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Scientific Law
• A statement that describes what scientists expect to happen every time under a particular set of conditions.
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Newtons’ Laws of Motion
Gravity
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How do scientific theories and scientific laws differ?
Unlike a theory, a scientific law describes an observed pattern in nature without attempting to explain it!
See example of gravity on next slide…
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Are there any questions?
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