1. Introduction to and Science Skills
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 x 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