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DYNAMIC PLANET I-1 NOTES

DYNAMIC PLANET I-1 NOTES. MODELS. PHYSICAL MODELS. Structures that scientists build to represent something else May be a small-scale structure of what a much larger item looks like, or once looked like. Group Discussion. List 2 physical models. How can those modes be used in science?.

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DYNAMIC PLANET I-1 NOTES

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  1. DYNAMIC PLANET I-1 NOTES MODELS

  2. PHYSICAL MODELS • Structures that scientists build to represent something else • May be a small-scale structure of what a much larger item looks like, or once looked like

  3. Group Discussion • List 2 physical models. • How can those modes be used in science?

  4. Examples • Dinosaurs in a museum are models built by paleontologists • Plaster casts of fossilized bones are fitted together • Paleontologists imagine what the flesh and skin may have looked like • May simulate some event or process in nature

  5. Scientists build tanks, channels, or basins to reproduce large-scale natural processes like river flow or ocean waves. • Scientists are able to adjust conditions (speed of water flow, etc) • Observations can be made • May collect qualitative data

  6. CONCEPTUAL MODELS • Developed in the mind • Based on prior observations & knowledge, as well as physical & chemical laws • Similar to a hypothesis, however, much broader • Models may be expanded with the addition of new discoveries or information

  7. Group Discussion • List 2 conceptual models. • How can those modes be used in science?

  8. Example • Picture of an atom • Describes information about the nucleus consisting of protons & neutrons, etc.

  9. MATHEMATICAL MODELS • Mathematical equations describing how some process works based on physical and chemical laws • Solving equations – similar to math class • Solutions to the equations explain how the process will work under a variety of conditions

  10. Group Discussion • List 2 Mathematical models. • How can those modes be used in science?

  11. Examples • Newton’s 2nd Law of Motion (F = M X A) • E = MC2 • Photosynthesis • 6CO2 +6H2O+ Light Energy C6 H12 O6 + 6O2

  12. NUMERICAL MODELS • Mathematical models that take too long to fully test by hand • Uses high-speed computers • Computers may quickly simulate what happens over time or with changing conditions

  13. Group Discussion • List 2 Numerical models. • How can those modes be used in science?

  14. Examples • Climatologists develop models to study how the Earth’s climate may change in coming decades • Meteorologists combine images collected by radar and satellites to make a model of the predicted path of a hurricane

  15. The End!

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