In 2:30, your students will understand what a library databases and why the results of the search here will take them just as long as a Google search, but will provide much more rich and credible sources of information.
Why Can't I Just use Google? (3:12)
A cartoon that really gets to the point from a student perspective.
What is a Library Database? (2:00)
Another Quick and Clear explanation.
Library Databases (9:00)
This one is a bit longer, but goes deeper into the difference between internet research and data based research. This one might be more effective for online courses since it gives a bit more detail.
Why do we still need libraries in the age of digital, real-time information? In this emotional talk, Pam Sandlian Smith shows how she works to use the library as a hub for community-based knowledge creation and discourse.
A 1940's vocational video that I think your students will get a kick out of. It really goes along way and showing how research has changed over the last 70 years.