A hypothesis is a testable assumption put forward to explain an event. Hypotheses arise as a result of observation or research and are tried to be confirmed or falsified by experiments. Hypotheses provide temporary answers to scientific questions and lead to further research.

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A theory is a logical framework derived from hypotheses to explain the cause of an event. Theories are supported by a large number of observations and experimental results and are broad in scope. Theories explain scientific facts and allow predictions to be made. Theories do not necessarily become laws, but can change or be improved over time.

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A law is a universal rule expressed in mathematical formulas to describe the nature of an event. Laws give the same result when repeated under the same conditions and leave no room for doubt. Laws answer the “how” question and do not change. Laws can exist independently of theories, but theories can help explain laws.

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For example, Newton’s laws of motion are the three fundamental rules that describe the motion of objects. These laws can be used to calculate the motion of any object, but they do not explain the cause of motion.

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