The concept here is Coulomb force. The paper (like human hair or animal fur) is essentially an insulator, but it does pick up some charge. When it does, you have repulsion of like charges. Before the paper completely picks up charge, being still neutral in places, it may be attracted to the globe, demonstrating a principle similar to a pocket comb picking up bits of paper. (By dipole formation in a non-uniform E-field.) Eventually the paper strips should become fully charged and stand up, following E-field lines. Of course, the paper is heavy and is acted on by gravity as well, but the effect is close to tracing out electric field lines and equipotential surfaces.

See also: Van de Graaf for High Voltage Sparks