1. Science is...
An organized way of using evidence to learn about the natural world
Based on observations

2. Scientific Method
The scientific method can be used to solve any problem, scientific or not.
It is the basis for all research and experiment.

3. A problem
Will..
Usually written
as a
Does..

4. Recognize a problem
Before you can go any further you must identify what the problem is that you are trying to solve.
Ask why or how?

5. Based on any pior knowledge pertaining to the problem.
Research
Based on any pior knowledge pertaining to the problem.

6. Hypothesis (Prediction) or Educated Guess Usually written as....
If......then statement.....

7. Forming a hypothesis
A hypothesis is a possible explanation to the problem that you are trying to solve
It is based on previous knowledge - RESEARCH

8. Controlled Experiments
To Run an
Experiment
Two groups are
needed!!!

9. Control Group
normal situation
used as a reference
used to compare to

10. Independent Variable Experimental Group
one factor that differs from the control

11. Dependent Variable(results)
what you measure
NEED A UNIT!

12. For a Controlled experiment
Amount of sun
you need to keep everything the same except one thing
Amount of water
vases

13. Data

14. Conclusions
Once data is collected it should be analyzed and interpreted.
True or
False ?
The data is used to evaluate the hypothesis. Did the data provide evidence to support the hypothesis or reject the hypothesis

15. Theories
Once conclusions are drawn the experiments are often repeated
WHY?
The purpose is to further test the hypothesis before accepting or rejecting the new findings
As evidence builds up, the hypothesis may become well supported that it is considered a theory
A theory is a well tested explanation that unifies a broad range of observations

16. Law Once conclusions are drawn the experiments are often repeated
As evidence builds up, the hypothesis may become well supported that it is considered a theory
A theory is a well tested explanation that unifies a broad range of observations 16

17. 2 Ways to improve any experiment
Increase
Sample Size
Repeat

18. Scientific Method Summary
Identify a problem to solve or a situation you want to learn more about.
Research - prior information pertaining to the problem
Form a Hypothesis or educated guess about the solution to the problem.
Experiment
The Control never changes, it is there to compare
the independent variable to.
Independent Variables is the one thing that is being tested.
Dependent variable - the results. Something measurable

19. Scientific Method Summary
5. Data. Collect the results.
Put in form of a graph or table.
6. Draw conclusions.
Verification of the experiment…REPEAT IT!
Scientists publish their findings in journals, mabazines or give lectures of their findings.
Theory - highly tested generally accepted principle.

20. Biogenesis or Spontaneous Generation?
Biogenesis is the theory that life only comes from living organisms
Abiogenesis or spontaneous generation is the belief that life can arise from something nonliving

21. Francesco Redi performed an experiment to disprove spontaneous generations.
His experiment were then reproduced by numerous scientists
Once evidence from many experiments is gathered, a well supported hypothesis may become a theory