Systematic study of the natural world through observation and experimentation.
Scientific theories and laws help us understand how nature works.
A theory is a well-tested explanation for a wide range of observations or results. It is supported by lots of evidence, but it can change if new information is found.
A law describes what always happens under certain conditions, often using math. Unlike theories, laws do not explain why things happen.
Both theories and laws are important. Theories explain, while laws describe.
The theory of evolution explains how species change over time.
Newton’s law of gravity describes how objects attract each other.
Theories explain why things happen; laws describe what always happens in nature.