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Evidence is gathered or collected that refutes the theory. The theory must be discarded, or modified to fit the evidence.
Examples of discarded theories: Phlogiston, Ether, The Steady State Theory.
Newton's theory of gravity has not been discarded, simply because it remains useful, even though it has been replaced by Einstein's Theory of General Relativity. GR could be considered an extension of Newtonian physics. With Darwin's Theory of Evolution, the original theory has not changed so much as it has been extended by new findings. We understand the structure of DNA much better now, and the role of genes. DNA was unknown during Darwin's time. Molecular Biology, genetics, and cladistics simply build upon the underlying theory of evolution.
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Rafa
CoachNew information that would change that facts can change a theory. Remember that a theory is not a scientific law which can not be changed. For a long time people theorized that there were four elements: fire, air, water and earth. That has changed now to want we know to be 118.
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What might cause scientists to change scientific theory?
Because technology might change in the future.
Under what conditions can a scientific model or theory change?
A scientific model can change if new evidence is found. If the new evidence that has been found contradicts the model or theory then a scientific model or theory can change.
How can you change a theory into scientific knowledge?
no
Why might scientists change a scientific theory?
If a new theory better fits the data overall or simply because new and significant data disagrees or the method which brought about the original theory is invalid.
Why might a scientist reject a scientific theory?
there might not be enough proof
