* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Sources and Nature of Light worksheet File
Document related concepts
SNC2D Sources and Nature of Light (Ref. P. 403-409 M-H Text) Introduction: The different ways of producing light depend on the different ways electrons can be forced to move to higher energy levels in their atoms. Although the electrons may be moved to higher energy levels in different ways, the light is always produced in the same way. Diagram of how an atom gives off light when it is “excited” How is light produced? ______________________________________ _________________________________________________________ Main Types of Light Emissions: 1. Incandescence: __________________________________________ _________________________________________________________ 2. Luminescence: __________________________________________________________________________________ Questions: (Ref. P. 403-409) 1) Define fluorescence Draw a diagram to explain how fluorescence works. 2) List four uses of fluorescent materials. 3) Define and give an example of each of the following types of luminescence Phosphorescence Chemiluminescence Bioluminescence 4) Redraw Figure 10.11 pg 409 to show the regions of visible and invisible electromagnetic waves. Label the regions in your drawing.