Understanding Scientific Theories and Laws: Key Differences and Examples

Jan 17, 2026

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This article explores the distinction between scientific theories and laws, highlighting their definitions and roles in science. It clarifies what constitutes a scientific theory, such as the Theory of Energy & Mass and the Theory of Evolution, which provide explanations supported by evidence. In contrast, scientific laws, like Newton’s Law of Gravity, describe fundamental principles of nature that consistently occur under specified conditions. Join us in understanding these critical concepts that shape our understanding of the natural world.

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Understanding Scientific Theories and Laws: Key Differences and Examples

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Scientific Theories versus Laws
What is a theory? Theory of Energy & Mass Theory of Evolution Is an explanation, supported by observations and/or experiments, that can be used to explain related occurrences.
What is a Scientific Law? Newton’s Law of Gravity In addition to theories, scientists also recognize certain facts of nature, called laws, that are generally known to be true. **Laws have a higher degree of certainty than theories.
Conclusion Keep in mind that all scientific explanations (theories) are subject to change as more is learned. With new information, scientists must be willing to change their thinking and, therefore, their explanations. What is the main cause for a stomach ulcer? Bacteria