1.  Law of reflection: the angle of incidence equals the angle of reflection.    2.  Diagram to show the law of reflection: See Summary.    3.  The name of the line drawn at right angle to a mirror surface is the normal.    4.  Rough objects reflect light sending it in different directions.                    Objects can be seen because they reflect light.    5.  Two differences between a filament lamp and laser light are:         Laser: All waves have the same frequency and wavelength and are in phase.         Filament lamp: has a range of frequencies and wavelengths and all the waves are not in phase.    6. Volcanoes are a natural phenomena, they reflect radiation from the Sun and cause cooling. Human activity is contributing to climate change. Factories reflect radiation from the city causing warming.