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1730338
The Scientific Method
Description
Leaving Certificate, the scientific method study help
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biology
Mind Map by
joannebailey
, updated more than 1 year ago
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Created by
joannebailey
over 9 years ago
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Resource summary
The Scientific Method
The steps of the scientific method
1. Observation
An observation is when something is noticed
2. Hypothesis
An educated guess based on an observation
3. Experimentation
An experiment is designed to test a hypothesis
4. Collection and interpretation of data
Data consists of measurements, observations or info gathered from experiments
5. Conclusion
A summary of the results of an experiment
6. Relating the conclusion to existing knowledge
Supported if results agree fully
Changed if results agree only partly
Rejected if results contradict
7.Reporting and publishing the results
Scientific journals, magazines, world wide web
Theories and principles
A theory is a hypothesis that has been supported by many different experiments
A principle or law arises from a theory that has been shown to be valid when fully tested over a long period of time
Principles of experimentation
1. Careful planning and design
Only a single variable should be tested
2. Ensure that the experiment is safe
E.g- tie long hair back, wear a lab coat
3. Design a control experiment
A control is used to provide a comparison against which the actual experiment can be judged
Placebo pill
4. Experiments must be fair
Sample size as large as possible, random selection, replications must be possible, double blind testing
Limitations of the value of the scientific method
The extent of our knowledge
A basic amount of knowledge is required
The basis of investigation
A badly designed experiment will lead to poor results
Interpreting results
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