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Model: A representation of an object or system. Using Models in Science. Uses for models: to describe or explain certain characteristics of things for making predictions - for explaining observations. Examples of models: model rocket model of matter, molecules, or atoms

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## Using Models in Science

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**Model: A representation of an object or system.**Using Models in Science**Uses for models:**• to describe or explain certain • characteristics of things • for making predictions • - for explaining observations**Examples of models:**• model rocket • model of matter, molecules, or atoms • model of a cell • - model of a building**Models Help You Visualize Information**• - Objects as models • - similar characteristics • - Ideas as models • - use an idea to create a model • – use your imagination**Models Are Just the Right Size**• - smaller model to represent a large thing • - model of solar system • - larger model to represent a small thing • - model of an atom**Models Help Build Scientific Knowledge**• testing hypotheses • - illustrating ideas**Models Can Save Time & Money**• small models cost less, take less time to build • small models can be destroyed in • testing**REVIEW**1. Purpose of a model:**1. Purpose of a model:**• to represent concepts or characteristics of objects that are difficult to see or hard to explain • to be used as a tool for testing & illustrating theories**2. Everyday examples of models:**• - model car • - globe/map • - picture • - statue/figurine**3. When to use a globe:**- compare sizes of different countries**When to use a map:**when traveling

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