1. Explain the photoelectric effect. Write Einstein's equation for the photoelectric effect and name all the terms of the equation (see section 9.2 Photons). 2. Describe Bohr's Model. Compare Bohr's Model (see fig 9-22) with the model described in section 6.2 (see fig 6-5). Explain what is happening when an electron 'jumps' from one orbit to another