Scientific Models
5th Grade Science · 5 lessons
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Lessons
- 1Scientific ModelsModels help scientists represent complex systems. Physical models (like a globe), mathematical models (like equations), and computer models all simplify reality to make it easier to study.Lesson
- 2Using Models to PredictA model simplifies something too big, too small or too slow to study directly. Its value is that it makes a prediction you can check. Every model is wrong in some way; a useful one is wrong in ways that do not matter for the question asked.Experiment
- 3Renewable Energy in PracticeSolar and wind generate cleanly but only when the sun shines or the wind blows. Matching supply to demand needs storage, interconnection or backup generation, which is why the engineering problem is a whole-system one, not a single-device one.Experiment
- 4Building a Model of a SystemA model does not have to look like the real thing; it has to behave like it. A jar of soil, plants and water models a whole water cycle well enough to predict what a greenhouse will do, even though it is nothing like a sky.Experiment
- 5When Models Get It WrongEvery model leaves something out, and the thing it leaves out is where its predictions fail. A flat map of the world is useful for finding countries and useless for comparing their sizes, because flattening a sphere always distorts area.Experiment
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