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Photo & Energy Trans
7.5A/7.7A Photosynthesis & Energy Transformations
| Term | Definition |
|---|---|
| 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