Please Take Out The Following:

1
Please Take Out The Following

1. Pencil
2. Composition Books
3. Sponge Bob Worksheets

2
Scientific Method Review
3
Scientific Method

• Definition An orderly procedure for solving
  problems

4
Problem

• Always stated as a questionWhat do you want to
  know?
• Example Why does ice float?

5
Gather Information

• Collect information relating to the question.
• Example Liquid type, temperature, make-up of
  ice, liquid density, etc.

6
pH of Each Substance

1. Vinegar pH 2.8
2. Hydrogen Peroxide pH 7-6
3. Isopropyl Alcohol pH 7
4. Tap Water pH 6.5-7.5

7
Hypothesis

• Educated guess or possible solution to the
  problem IfThenBecause
• Good Example If the ice floats in water then
  the ice is less dense than the water because of
  the surface area to volume ratio (ice Vs. water)
• NOT a good Example I think ice floats in water
  because it is less dense than the water.

8
Theory

• Most logical explanation for events that occur,
  but has not been proven time and time again. Give
  an example!

9
Law

• Theory that is proven true over and over again.

10
Variable

• Factor being tested in the experiment (What is
  being changedI.V.)
• Example Change type of liquid the ice floats on
  Change type of liquid added to water (toothpaste
  or hair gel) Change temperature of water etc.

11
Independent Variable

• The variable of the experiment that you change.

12
(No Transcript)
13
Dependent Variable

• The part of the experiment in which you use to
  measure your results (Can you measure your
  results?).

14
Control

• The experiment without the independent variable
  (same conditions without a change in the
  control)used for comparison with the variables.
• Example Same experiment using water, toothpick
  and staple (without detergent).

15
Constant

• The objects that stay the same throughout the
  experiment to get accurate results.

16
Data Tables

• Organize data into columns in your results
  portion (Microsoft Excel is good for this)

17
Graphs

• Display data that is easy to see results (e.g.
  bar graph, pie chart, line graph, etc.)when
  would you use each of these?

18
Conclusion

• State whether our hypothesis is correct or
  incorrect and WHY.
• Example My hypothesis that the ice floated is
  due to the green liquid making the water less
  dense was correct because the detergent made the
  water less dense than the ice from molecular
  action between the two substances.