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11 Cards in this Set
- Front
- Back
Biology definition
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study of the structure, function and development on living things
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Generalisations
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statements supported by evidence which generally apply (there can be contradictions)
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theories
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develop from hypotheses/generalisations
represent scientific evidence as it is know at present can change when new observations or evidence refutes the widely accepted idea of scientists |
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models
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presentations of phenomena
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laws
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develop when generalisations/theories can be applied to all known cases, without exception
can be used to predict future phenomena |
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Scientific method
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1. observations (anything detectable)
2. Inferences 3. Hypothesis (testable idea) A causes B 4. Predictions 5. Experiments 6. Collect & analyse data 7. Repeat |
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Independent variable
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is deliberately manipulated
aka experimental variable eg. group A is different from group B because of the experimental variable |
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Dependent variable
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is the variable that changes as a response to the independent variable
is what you measure and observe in the experiment aka responding variable |
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controlled variables
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those variables that are regulated and kept constant for the duration of the experiment
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Uncontrolled variables
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are those factors which are not considered in the experimental design
should not have any significant effect on the experiment |
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sample size
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larger the better as it increases the reliability of the outcome as it is an attempt to even out the individual variation that exists between the subjects
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