Why is the green region green? What light(s) must be blocked by the object (if any) and which light(s) must be reaching the region in order for it to appear green? v. Why is the black region black? What light(s) must be blocked by the object (if any) and which light(s) must be reaching the region in order for it to appear black? vi.How many areas of shadow do you have? I.e. how many different areas in ii-iv result from either 1 or both lights being blocked by the object? NOTE: The multiple colors might make this easier to see, but also may cause the misconception that this only has to do with colored lights