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Exploring Science Skills: Density, Hypothesis, and More

Dive into scientific principles like density, hypothesis testing, laws, and the scientific method. Learn about models, technology, theories, experiments, and data analysis. Discover the importance of accuracy and precision in experiments and the evolving nature of scientific knowledge.

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Exploring Science Skills: Density, Hypothesis, and More

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  1. Chapter 1 Introduction to and Science Skills

  2. What we will study this year…

  3. Important Terms • Density - The amount of matter per volume (size) • Hypothesis - A prediction which needs to be tested • Law - Mathematically explained ex: E=mc2 4. Model - Represents an item too big or too small to study normally • Technology - Set of tools both that help us think and work better 6. Theory - Proposed explanation based on many tests

  4. Scientific Method - Inquiry • Question / problem • Collect background information • Create Hypothesis • Controlled Experiment – • Procedures & Materials • Test hypothesis w/ indep & dep variables • Collect & graph data • Analysis / Conclusion

  5. Important Concepts in Experiments • Testing must be measurable • Put data in tables with heading & titles • Use appropriate units “No Naked Numbers!” • Do several trials and average. • Look at average data in graphs • Look for trends and patterns

  6. Line Graphs Volume of Hydrogen vs Time Volume of Hydrogen vs Time

  7. Bar Graphs

  8. Accuracy VS Precision You want to have BOTH!

  9. Tools of the Trade • What type of technologies do scientists use? simple & complex. • What type of models do scientists use?

  10. Science is NOT Static • Changes with new information: Example: Pluto is no longer a planet; it’s a dwarf planet (planetoid). First of its kind. New definition: orbits the sun, enough mass for it’s gravity to causes a nearly round shape, and cleared the neighborhood around its orbit. (IAU, Aug. 2006) x

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