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How do we define science?
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Systematic gathering of knowledge by observation and measurement *must be publicly observable
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How do scientists systematically gather knowledge?
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Scientific method
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What is the difference between and observation and an explanation
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Observation is the pattern and what you seeexplantation is what makes it happen, how it happened, and why it happened
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What are the steps of the scientific method (7 steps)
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1. observation2. question3. hypothesis4. design experiments5. gather data6. interpret results7. communication
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Observations consist of what
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Reading, previous work, direct observation, anecdotal data
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Hypothesis consists of what
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It must lead to a testable predictionit must be rationale, falsifiable
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Designing an experiment consists of what
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It must have a dependent variable, independent variable, and a controlled variable. it must be able to replicated
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What are the dependent, independent, and controlled variables in an experiment
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Dependent - is what changesindependent - investigated influencecontrolled - unwanted influence
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Interpreting results consist of what
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Falsify or not falsify hypothesis
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Why is it important that science is self-correcting
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Science is progressiveit allows us to go back and see what the study was testing for
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What is a hypothesis
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Statement of knowledge before experimental work has been performed*testable, measurable, falsible
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What is a theory
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Body of connected statements to explain an observationbased on accumulated evidence and reasoning (explanation)
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What are examples of important theories
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Atomic theory: matter is composed of atomsgerm theory: microorganisms that cause many diseasesevolution theory: change in the frequency of inherited traits passed between generations
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What is a law
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Something that is always observed to happen (observation)
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What are some examples of laws
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Newton's law of motionthermodynamics: heat move from high to low placesgravity: little mass moves to big massmendelian inheritance: genes come from parents
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