Name____________________________ Biology Vocabulary Definitions Block______ Vocabulary For Unit ________________________________ Word Textbook Definition Your Definition Visual Image Photoelectric Effect The emission of electrons from a metal when light shines on the metal. Electrons are emitted from a metal when photons are shot at the metal. Absorption Spectrum A graph plotting a pigment light absorption. A paper showing color levels of different absorption colors. Chlorophyll A Only pigment that can participate directly in the light reactions. Pigment that participates in light reactions. Chlorophyll B A type of yellow-green accessory photosynthetic pigment that transfers energy to chlorophyll a. Transfers energy to chlorophyll a.