1.  What is the law of reflection?  2.  Draw and label a diagram to show the law of reflection.  3.  What is the name of the line drawn at right angle to a mirror surface?  4.  Complete the following sentences:        Rough objects reflect light sending it in               directions.         Objects can be seen because they              light.  5. List two differences between a filament lamp and laser light.  6. Fill in the gaps in the following sentences: Volcanoes are a              phenomena, they              radiation from the Sun and cause cooling. Human activity is contributing to              change. Factories reflect radiation from the city causing             .