What is the difference between hypothesis and theory?

In scientific reasoning, a hypothesis is an assumption made before any research has been completed for the sake of testing. A theory on the other hand is a principle set to explain phenomena already supported by data.

What is theory in easy words?

A theory is a group of linked ideas intended to explain something. A theory provides a framework for explaining observations. The explanations are based on assumptions. From the assumptions follows a number of possible hypotheses. They can be tested to provide support for, or challenge, the theory.

How does a theory in general develop?

Scientific theories are created through the process of the scientific method. Observation and research lead to a hypothesis, which is then tested. Over time, a hypothesis can become a scientific theory if it continues to be supported by additional research.

Can a theory be proven?

A scientific theory is not the end result of the scientific method; theories can be proven or rejected, just like hypotheses. Theories can be improved or modified as more information is gathered so that the accuracy of the prediction becomes greater over time.