Scientific Models Section 3.

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Presentation transcript:

Scientific Models Section 3

Types of Scientific Models Models are a pattern, plan, representation or description designed to show the structure or working of an object, system or concept Models help us understand Explain or analyze concepts Represent things too small or too large Explain past or the present; predict the future 3 major types of models

Physical Model Models you can touch Look like the real thing Do have limitations Look like but are not the real thing

Mathematical Models Models are made up of mathematical equations and data Simple models – formula for how fast a car goes Complex models (computer) – population growth

Conceptual Model Model of system of ideas Big Bang Theory Continental drift System of ideas and hypothesis Supported through the scientific method

Choosing the Right Model Models are used to explain scientific theories A theory is an explanation that ties together many hypothesis and observations A theory can not only explain an observation, but predict the future

Scientists use models to help guide or search for new information Information scientists gather by using models can help support a theory or show it to be wrong Models can be changed or replaced

Climate Model Scientists who study the Earth’s atmosphere have developed mathematical climate models Models have lots of data Levels of Carbon dioxide Land and ocean temperatures Cloud types and cloud cover Snow and ice cover Ocean currents

These mathematical models don’t make exact predictions about future climates, but they do make estimates Examples Global warming Ice Age