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Published byJanis Fisher Modified over 9 years ago
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Scientific Method Biology
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What is Science? The goal of science is to investigate and understand the natural world, to explain events in the natural world, and to use those explanations to make useful predictions. In other words…science is an organized way of using evidence to learn about the natural world.
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Thinking like a Scientist: Observation: Process of gathering information. Data: The information gathered from the observation. Inference: Logical interpretation based on prior knowledge or experience. AKA: educated guess. Hypothesis: Proposed scientific explanation of observations.
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Thinking like a Scientist (cont.) Test: Set up an experiment to test your hypothesis. Analyze: Think about your observation and draw a conclusion.
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Hypothesis If…then… statement. Examples: If you drink coffee before going to bed, then it will take longer to fall asleep. If you cover a wound with a bandage, then it will heal with less scarring. If I chose not to participate in Mr. MacDonald’s class…then I will receive a bad grade.
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Other Key Terms: VARIABLE: A Variable is a logical set of attributes such as measurable quantities, categories such as gender, numbers, or words. INDEPENDENT VARIABLES: or manipulated variable, is a factor that’s intentionally varied by the experimenter. The researcher changes this variable, it is under their control. E.g. changing temperature, water quantities, etc.
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Other Key Terms (cont.): DEPENDENT VARIABLES: or responding variable (responds to the independent variable – “dependent” on the independent), is the factor that may change as a result of changes made in the independent variable. E.g. Plant growth, cell growth etc. CONTROL GROUP: In a scientific experiment, the control is the group that serves as the standard of comparison. The control group may be a “no treatment" or an “experimenter selected” group.
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MythBusters Modern Day Scientists “I reject your reality and substitute my own.” –Adam Savage
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Example experiment: Flying Penny
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Scientific Method Song If you have trouble remembering the scientific method…just sing this song. https://www.youtube.com/watch?v=2sKX 20WhKS4 https://www.youtube.com/watch?v=2sKX 20WhKS4
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