* Explaining a concept: "Scientific theory explains how the universe began with the Big Bang."

* Contrasting with everyday use of "theory": "In science, scientific theory is a well-substantiated explanation, not just a guess."

* Highlighting the importance of evidence: "Darwin's scientific theory of evolution is supported by a vast amount of evidence."

* Discussing the development of knowledge: "Scientific theory is constantly refined and updated as new discoveries are made."

Let me know if you'd like more examples!