Pew Research:

Test your knowledge of science facts and applications of scientific principles by taking our short 12-question quiz. Then see how you did in comparison with a nationally representative group of 3,278 randomly selected U.S. adults surveyed online and by mail between Aug. 11 and Sept. 3, 2014 as members of the Pew Research Center’s American Trends Panel.When you finish, you will be able to compare your scores with the average American and compare responses across demographic groups.

I got 11 out of 12. I should have aced it if I had only thought a little longer about one of the questions. According to Mental Floss, only 6 percent of Americans aced this basic science survey. How did you do?