Here are a few sentences using "scientific" in different ways:

* Formal: The research team used scientific methods to analyze the data.

* Descriptive: The documentary presented a scientific explanation for the phenomenon.

* Comparative: The new theory offers a more scientific explanation than the previous one.

* Informal: It's not just a hunch, it's a scientific fact!

Let me know if you'd like more examples or want to explore a specific context for using "scientific"!