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How is the validity of theory tested?

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Answer:

-- Does it explain things that have already been observed ?

-- Does it make predictions that can be tested, and when tested, are found to be true ?

First answer by Alcohen2006. Last edit by Alcohen2006. Contributor trust: 1141 [recommend contributor ]. Question popularity: 1 [recommend question].

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How is validity of scientific theory tested?
By testing out the theory
Is a theory tested?
Yes
Can all theories be tested?
Depending on the theory, opens the option for it to be tested. Such as, If i have a theory on a new and improved type of Gasoline and I would like to test it's MPG on a highway in an automobile, it's...
Explain why a theory should be tested?
A Theory is just someones idea of what might work. Proof are what most people know will work
How is the validity of a theory tasted?
Two means of testing the validity of a hypothesis: -- Does it adequately explain things that have already been observed ? -- Can observations of its predictions be achieved ? If a hypothesis...