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Photo & Energy Trans

7.5A/7.7A Photosynthesis & Energy Transformations

TermDefinition
RADIANT ENERGY Energy from the sun that reaches earth as visible light, & ultraviolet/infrared (heat) radiation.
CHEMICAL ENERGY Energy stored in chemical bonds & released through chemical reactions.
PHOTOSYNTHESIS Chemical reaction in which plants convert Sun's radiant energy into chemical energy; converts carbon dioxide & water into glucose & oxygen; photo=light.
CHEMICAL REACTION Process by which 2 or more chemical substances interact & are chemically changed, producing different chemical substances.
REACTANTS Substance that takes part in & undergoes change during a reaction.
PRODUCTS Substance produced during a chemical reaction.
GLUCOSE Simple carbohydrates produced by photosynthesis; used to store energy & build structural molecules.
ATOM Smallest particle of an element, made of electrons, protons, & neutrons.
MOLECULE Simplest unit of a chemical compound that can exist, formed when 2 or more atoms join together chemically.
ENERGY TRANSFORMATION Change of energy from 1 form to another.
DIGESTION Process of breaking down food into component molecules that can be absorbed into the body & used for energy & nutrients.
MECHANICAL ENERGY Sum of the potential & kinetic energy of an object.
THERMAL ENERGY Total kinetic (motion) energy of tiny particles that make up matter - the faster the particles move, the warmer the matter becomes.
HEAT Energy transferred between 2 objects of different temperatures, moving continually in a predictable pattern from warmer site to cooler site until all sites have reached the same temperature.
Created by: trauberk
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