Six different objects are shown, four of them are reflective surfaces ... can you spot them? Physical processes - Light - Reflection Learning Points Shiny, smooth surfaces bounce light back and are good reflectors. Rough surfaces bounce light in many directions and are not good reflectors. Matt or dark surfaces absorb light and are not good reflectors. A Twig Tidbit Film - Spot the Difference. The children have to identify which objects belong in the group.