1. BELLWORK : 8/16-17/12
Think of a question that you could answer through an experiment:
What is the question?
How would you setup the experiment?

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

3. Online Textbook Access
Go to URL
Username
jstudent537
Password
s7v8j

4. 1 – The Nature of Science

5. 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

6. 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

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

8. Scientists Experiment
Answer questions by investigating
Sometimes these are old questions, sometimes new
Often, questions arise from observations
Investigate by designing/conducting experiments
Experimental results are confirmed ( repetition )

9. Observe

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

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

12. 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

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

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

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

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

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

18. 2 – The Way Science Works

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

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

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

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

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

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

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

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

27. 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

28. 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

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

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

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

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

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

34. 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

35. Demonstration Gas-Producing Reaction
Lots of gas at first, then slows down
Adding Vinegar to Baking Soda makes CO2

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

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

38. Lab Activity – Motion Graphing
If we do not take this seriously or respect the equipment, we will not use this setup again

39. Lab Activity – Motion Graphing
Each group goes to their station
One person logs into network/labtop
Open Logger Pro Software
Open file “01a Graph Matching”

40. Lab Groups – 3rd Period Station 1 – Mackenzie, Alexandria, Jean
Station 2 – Kandice, Ryan, Shane
Station 3 – Megha, Brittany, Alex
Station 4 – Shelby, Sean, Chris, Jayda

41. Lab Groups – 5th Period Station 1 – Heather, Aaron, Bhavin, Kennedy
Station 2 – Taylor, Deshun, Catherine, Becky
Station 3 – Keyra, Hannah, Caleb, Terrell
Station 4 – Ashleigh, Bryanna, Jarion, Jay
Station 5 – Zechariah, Bill, Bryant, Josh

42. Lab Groups – 6th Period Station 1 – Chance, Steven, EJ, Alex
Station 2 – Daniel, Torey, Robert
Station 3 – Brennen, Justin, Mac, Alek
Station 4 – Odalis, Garrett, Jacq
Station 5 – Megan, Tomaria, Ross, Andrew

43. Lab Groups – 7th Period
Station 1 – Jennifer, Ruby, Cody, Brooke, Austin
Station 2 – Raivan, Drake, Tiffani, Brandon, Kaitlyn
Station 3 – Isiah, Michael, Layton, Sarah
Station 4 – Kirsty, Will, Katlyn, Larry
Station 5 – Ben, Aaron, Monica, Adam

44. Procedure Collect data by hitting green “Collect” button
You will hear Motion Detector “clicking”
You will also see data collected an graph

45. Lab Activities Turn the detector on and stand still in front of it
What do you see on a distance vs. time graph?
Repeat the test but slowly move away from the detector
What do you see?

46. Lab Activities
Turn the detector on and move back and forth in front of it ( get far away, move closer )
What do you see on a distance vs. time graph?

47. GRADE - Graph Setup a graph of distance vs time for a person
What would it look like if someone is moving away from these detectors at constant speed?
What type of graph is this ( line, bar, pie chart )?

48. Bellwork - 08/27/12 What does it mean to be precise?
QUIZ – Thursday ( 6th ) and Friday

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

50. Applying Precision - Accuracy
Scientists use significant figures to show precision of a measured quantity
Significant figure: Prescribed decimal place determining the amount of rounding-off when assessing the precision of a measurement
Round your answers to the correct significant figures

51. LAB Activity - GRADE Get 50 points for participation
If I see not participating in one way or the other – less than 50 points
Document on Projector Screen ( 1 / group )

52. Bellwork - 08/29/12
Think of the paper-wad toss we did yesterday. Would it be accurate, precise, neither, both in the following situation?
4 made it in the basket, 1 landed far away
QUIZ – Thursday ( 6th ) and Friday ( 3rd, 5th, 7th )

53. Significant Figures – Counting Rules
ALL non-zero digits are Significant
Leading and trailing zeros are not significant
2500 and have TWO Significant Figures
Zeros in between Non-Zeros are significant
2501 and 2003 have FOUR Significant Figures
Zeros after a decimal point ARE SIGNIFICANT
They do not begin the number
25.00 and have FOUR Significant Figures

54. Chpt 1 Quiz Scientific method Branches of science Metric conversions
units (length - meters, mass - grams, time - sec)
Types of graphs
Precision and accuracy

55. Significant Figures – Adding/Subtracting
The answer cannot have more decimal places than the least number of decimal places in the calculation
Add to 3
The answer is 18

56. Scientific Notation Earlier examples with TWO Significant Figures:
2500 and
Want to shrink the number down to:
Number between 1 and 10
Multiply by a power of 10

57. Scientific Notation Earlier examples with TWO Significant Figures:
2500 and
Becomes ( but they are the same number ):
2.5 x 103
3.6 x 10-5

58. Scientific Notation How to write this out:
2500 ( have to move 3 places to left)  2.5
( have to move 5 right )  3.6
Positive or Negative Exponent on Power of 10?
2.5 x 103 : 2.5 is SMALLER than original 2500
3.6 x 10-5 : 3.6 is LARGER than original

59. Study Guides – Pg. 4
Do entire page ( Take home, study this and notes )
Look at/Work through Pretest to study also
When done
ask for Unit Conversions worksheet back
Correct/Finish Worksheet

60. Unit Conversion/Scientific Method Worksheets
Improve your work ( finish blanks / correct mistakes )
Show work on separate piece of paper
No work – grade stays the same
Something similar will be for homework next time