Francois Truffaut exploits what sort of movement to great effect at the end of his film The 400 Blows?

The Easter Island residents most likely erected the moai (monumental heads) to

a. mark graves. b. represent gods. c. identify property owners. d. to frighten potential invaders.

What are the stenciled cutouts placed inside lighting instruments to produce patterned lighting effects?

A. Lekos B. Fresnels C. Gels D. Gobos