Review

Let’s Go Fly A Kite… You want to test different shapes of kites to see which shape results in the strongest lift in the air. List what factors that need to be the same for each trial so that the only variable being changed is the shape of the kite.

Question – Does temperature effect diffusion rate? Hypothesis: Prediction (If-then): Test Hypothesis: Analyze Results: Draw Conclusion: Communicate: Other Questions:

Scientific Models

Cardiopulmonary Resuscitation (CPR) Why is it taught with a model and not a real human?

Scientific models a representation of something familiar to describe something unfamiliar

Limits: They are never exactly like the real thing

3 Main Types of Models Mathematical Models Physical Models Conceptual Models

Physical Models shows you what it looks like Example: plane, cell, atom

Mathematical Models uses equations and data Example: E = mc²

Conceptual Models systems of ideas or comparisons to explain something Example: food web, big bang theory

Physical, Mathematical, or Conceptual?

Physical, Mathematical, or Conceptual

Physical, Mathematical, or Conceptual

Physical, Mathematical, or Conceptual

Physical, Mathematical, or Conceptual

Physical, Mathematical, or Conceptual

Physical, Mathematical, or Conceptual

Physical, Mathematical, or Conceptual

Physical, Mathematical, or Conceptual Cell is like a factory

Scientists are always trying to improve models

The Right Size Models explain things that are too large, too small, or just impossible to see Sound waves

Using Models to Build Scientific Knowledge

Models are often used to help explain scientific theories Theory - an explanation of many hypotheses and observations. Explain why or how

Law a summary of many hypothesizes and observations. Explain what happens

Hmmm… A map and globe are two different models of the same thing. When would you want to use each of these models?