GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A theory cannot be disproven; a guess can be
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A theory is backed up by hard evidence; a guess is not
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A theory is agreed upon by scientists; a guess is only agreed on by laypeople
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A theory is usually very old; a guess is usually very new
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Detailed explanation-1: -A theory isn’t speculation about what might be true. It is a set of propositions that seek to explain a particular phenomenon or set of facts. A theory can be tested and shown to be accurate or modified as the evidence requires. Even when a theory is accepted as fact, it remains a theory.
Detailed explanation-2: -How is a scientific theory different from a guess? Theories are backed up by evidence; guesses are not.
Detailed explanation-3: -A singularity is a point in space where there is a mass with infinite density. This would lead to a spacetime with an infinite curvature. Singularities are predicted to exist in black holes by Einstein’s theory of general relativity, which is a theory that has done remarkably well at matching experimental results.