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Description
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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The Scientific Method
- The steps of the scientific method
- 1. Observation
- An observation is when something is noticed
- An observation is when something is noticed
- 2. Hypothesis
- An educated guess based on an observation
- An educated guess based on an observation
- 3. Experimentation
- An experiment is designed to test a hypothesis
- An experiment is designed to test a hypothesis
- 4. Collection and interpretation of data
- Data consists of measurements, observations or info gathered from experiments
- Data consists of measurements, observations or info gathered from experiments
- 5. Conclusion
- A summary of the results of an experiment
- 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
- Supported if results agree fully
- 7.Reporting and publishing the results
- Scientific journals, magazines, world wide web
- Scientific journals, magazines, world wide web
- 1. Observation
- 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
- A theory is a hypothesis that has been supported by many different experiments
- Principles of experimentation
- 1. Careful planning and design
- Only a single variable should be tested
- Only a single variable should be tested
- 2. Ensure that the experiment is safe
- E.g- tie long hair back, wear a lab coat
- 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
- Placebo pill
- A control is used to provide a comparison against which the actual experiment can be judged
- 4. Experiments must be fair
- Sample size as large as possible, random selection, replications must be possible, double blind testing
- Sample size as large as possible, random selection, replications must be possible, double blind testing
- 1. Careful planning and design
- Limitations of the value of the scientific method
- The extent of our knowledge
- A basic amount of knowledge is required
- A basic amount of knowledge is required
- The basis of investigation
- A badly designed experiment will lead to poor results
- A badly designed experiment will lead to poor results
- Interpreting results
- The extent of our knowledge
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