1. Introduction to Science 1 – The Nature of Science 2 – The Way Science Works 3 – Organizing Data

2. Key Terms Science – Knowledge obtained by observing natural events and conditions to learn facts, principles, laws Technology – Application of science for practical purposes Law – A descriptive statement or equation that predicts events under certain conditions Theory – System of ideas explaining related observations and supported by evidence

3. How Science Takes Place A scientist may perform experiments to find a new aspect of the natural world, to explain a known phenomenon, to check the results of other experiments, or to test predictions of current theories Examples – New materials for computer chips that make processing speeds/phones more advanced

4. How Science Takes Place Examples – TVs were built after the early cathode ray tubes were developed in the late 19 th century

5. Observe

6. Branches of Science Natural Science: Biological, Physical, Earth

7. Working Together Different branches of science work together, along with technology – Example: Applying newer computer- chip materials into actual designs ( Razr, self-cooled labtops )

8. Laws & Theories – Always Tested Laws allow predictions to be made about how a system will behave under given conditions – GRAVITY Theories explain HOW a process takes place – PLATE TECTONICS

9. Models Mathematics is useful to describe events – Gravity has an equation

10. Models Models can represent physical events Used in daily life – Hurricane trajectories – Weather predictions

11. BELLWORK : 8/20/12 Which popcorn is the better deal?

12. Last Week Discussed the fundamental nature of science Also worked on observation skills Anyone observe something interesting over the weekend?

13. Introduction to Science 1 – The Nature of Science 2 – The Way Science Works 3 – Organizing Data

14. 2 – The Way Science Works

15. Science Skills Identifying problems Planning experiments Recording observations Correctly reporting data

16. Critical Thinking Involves asking questions, making observations, and using logic Surprise!!

17. BELLWORK : 8/20/12 Which popcorn is the better deal? Discuss

18. Units of Measurement In your notes, list 5 you can think of. Do these relate to length, mass, weight, time, volume

19. Units of Measurement Scientists use standard units of measure – SI System Meters, grams, Seconds

20. Units of Measurement SI ( System Internationale ) used for consistency Prefixes allow for easy converting EXAMPLES: m  km kg  g seconds  milliseconds

21. Exit Pass – Unit Conversions Study Guide – Pg 3 Problem 3 Remaining Time – Problems 1, 5 & 6

22. Bellwork – 08/21/12 Study Guide – Pg 3 Problem 3 Finished? – Questions 1, 5 & 6

23. Help with # 1, pg 3 Microscopes – magnify ( make larger ) small objects Telescopes – magnify objects far away Radio telescope – detect radio waves from objects Spectroscopes – separate light into a rainbow Ruler – finds length

24. Key Terms Variable – A factor changing in an experiment Length – Measure of the straight-line distance between two points Volume – The space occupied by an object Mass – Amount of matter in an object Weight – Amount of gravitational force on object

25. Scientific Method – Use Colors!! Notice there is more than time where you observe

26. Are They The Same? Are they the same? - Hypothesis How can we test your hypothesis?

27. Bellwork – 8/23/12 Study Guide Finish pg. 3 - #2, #4

28. Introduction to Science 1 – The Nature of Science 2 – The Way Science Works 3 – Organizing Data

29. Presenting Scientific Data Scientists use written reports and oral presentations To share results Organizing/Presenting this info is important

30. Line Graphs Show continuous changes Time : Independent Variable (x-axis) Doesn’t DEPEND on anything Gas Volume : Dependent Variable (y-axis) Depends on something else

31. Demonstration Gas-Producing Reaction Lots of gas at first, then slows down Adding Vinegar to Baking Soda makes CO 2

32. Bar Graphs Compares similar data for different items or events

33. Pie Chart Graphs Shows parts of a whole ( or parts of 100% )

34. Precision & Accuracy Precision: the exactness of a measurement Accuracy: how close a measurement is to the true value