What is scientific literature? Utilizing the Scientific Literature by Anne E. Egger, Ph.D., Anthony Carpi, Ph.D. is an excellent summary.
Scientific publications that report original empirical and theoretical work in the natural and social sciences are often called scientific literature. They are,
What types of scientific publications are included?
Why is scientific literature important?
The reason why access to the literature is so important is because it is a reliable archive of scientific research. The fact that it is reliable does not mean that every published paper is correct, but it means that progress in our understanding can be tracked through time.
Use this link to test yourself, if you really understand scientific literature: https://www.visionlearning.com/en/library/Process-of-Science/49/Utilizing-the-Scientific-Literature/173/quiz