1. Scientific Method

2. Steps in the Scientific Method
Question
Observation
Research
Hypothesis
Experiment
Data Collection
Conclusion
Retest

3. Gathered through your senses
Observations
Gathered through your senses

4. Inference
Something that you would assume is true due to your observations and reasoning.

5. Hypothesis A suggested solution Must be testable
Sometimes written as If…Then… statements
Predicts an outcome

6. Experiment A procedure designed to test the hypothesis.
Independent variable
Dependent variable
Control group
Constants
Experimental group

7. Independent Variable
The factor that is being changed or tested in an experiment.

8. Dependent Variable Your results!
The outcome… what is being measured or observed.

9. Control Group One group of test subjects is used for comparison.
They do not get exposed to the independent variable.

10. Experimental Group The group(s) that are being tested on.
The group that has the independent variable.

11. Constants
Every factor besides the independent variable must remain the same so that you know for sure what has affected your results.

12. Good Experiment A good or “valid” experiment:
Tests only one changing variable
Will be repeatable (other scientist can perform it)
Has large sample sizes
Has several trials of each tested group

13. Data Results of the experiment may be
quantitative
(numbers)
qualitative
(Quality or something observed with the senses)

14. Data
Must be organized
Can be organized into charts, tables, or graphs

15. Graph the Independent vs. Dependent Variable
Line Graph: Changes over time or temperature
Pie Chart: Parts of a whole
Bar Graph: compare things between differentgroups

16. Conclusion
The answer to the hypothesis based on the data obtained from the experiment
Should say if Hypothesis is supported or rejected.

17. A Theory is a well-established explanation for scientific data
A Theory is a well-established explanation for scientific data. Theories typically cannot be proven, but they can become established if they are tested by several different scientific investigators. A theory can be disproven by a single contrary result.

18. Wrap up
Using ALL the terms below write a full description that explains the whys and hows of what happened during your milk lab. Make sure to answer this question: What was causing the food colorings to move in the control (water w/no fat) and in the milk samples (experimental groups w/fat)?
Use the following terms in your paragraph:
Surface tension fat globules
Surfactant intermolecular forces
Hydrophilic Lipophilic
Highlight each of the words in your paragraph

19. Chem Catalyst
Timothy is testing his hypothesis that eating carrots will help his rabbits live longer. He has two rabbits. Rabbit A he feeds one carrot everyday. Rabbit B does not get carrots. Both rabbits are the same age, get the same type of food, and the same exercise. He does this for 3 years until Rabbit B dies. Identify the following factors from his experiment:
Hypothesis
Independent/dependent variables
Experimental/control groups
Constants
Conclusion, did his results support his hypothesis?

20. Exit Ticket Choose a scenario from the worksheet
Answer the questions under the scenario
List something that could have made it a better experiment. Use complete sentences.

21. Chem catalyst
Get an equipment sheet from the table and glue into comp book.
Lay out your lab money if you brought it and turn in your contracts. Cut out and put in basket.

22. Chem Catalyst
There are some objects on the stool in front of the room.
Write down as many observations as you can about these objects.

23. Chem Catalyst
1.Observe the picture drawn on the board 2. Answer the question in your folder
An experiment was designed to measure the effect of sulfur dioxide emissions from a power plant on the pH of rain falling downwind of the plant. In this experiment, the average pH of rainwater upwind from the plant would be considered………?
a. the Independent Variable b. the control.
c. a constant. d. the Dependent variable.

24. get a lab from the table
Go through notes and highlight vocabulary from scientific method notes

26. Design Principals (Evaluate the overall benefit to cost ratio of a new technology)
Read the above article
In the article it mentions that the designers of Ooho “think” that the pros outweigh the cons.
Do some research and construct a data supported response either supporting or rejecting this thought. Response must be written in paragraph form and use appropriate APA citations. Provide a bibliography as well with at least 3 resources.
Check out PurdueOwl.com for help with APA formatting