| A | B |
| Big Bang Theory | universe was created 4-5 billion years ago as a result of an explosion |
| Radiation Theory | very low, uniform energy fill the universe - evidence of Big Bang Theory |
| Red Shift Theory | occurs when light seen coming from an object is more red |
| Butterfly effect Theory | small changes can alter the weather |
| Fusion | process of combining two or more entites into a whole - nuclear fusion (2 or more atoms react) |
| Fission | act of dividing or splitting into two |
| Nuclear decay | process by which unstable atomic nucleus loses energy by emitting radiation |
| Biosphere | the part of Earth that supports life |
| Chromosphere | the layer above the photosphere on the sun. "Sphere of color" |
| Lithosphere | outermost layer of Earth - includes the crust |
| Photosphere | the stars outer shell from where light is radiated |
| Continental drift | Alfred Wegener theory that explains how continents shift position on the Earth's surface |
| Oceanic crust | crust found under the ocean |
| Conduction | the movement of heat from one object directly to another |
| Convection | movement of heat through fluids or gases |
| Radiation | movement of heat through electromagnetic waves |
| Weathering | the wearing away of an object |
| Abrasion | process of scraping or wearing away |
| Attrition | the act of grinding down by friction |
| Hydraulic action | "mechanical weathering" erosion of material caused by the motion of water against a rock surface |
| Volcanism | volcanic activity |
| Metamorphism | alternation of the composition of a rock by heat and pressure |
| Erosion | the wearing away of something by wind, water or natural agents |
| Folding | bending in the rock |
| Atmosphere | layer of Earth above the Earth's surface |
| Geosphere | rock layer |
| Biosphere | layer where life is supported |
| Asthenosphere | layer of Earth below the lithosphere |
| Cryosphere | frozen water cycle |
| Renewable resources | resources that can be repeatedly reused |
| Nonrenewable resources | Resources that can not be reused |
| Aquifers | layer of rock that can transmit groundwater |
| Shales | sedimentary rock that forms from mud and clay |
| Swamps | areas where water collects |
| Wetlands | land consisting of swamps and marshes |
| Carnivore | an animal that eats meat |
| Herbivore | an animal that eats plants |
| Producer | an organism that makes its own food |
| Decomposer | an organism that breaks down living material |
| Biomagnification | concentration of toxins in an organism as a result of eating another organism |
| Toxicology | a study that is concerned with the effects of chemicals on living organisms |
| Epidemiology | study of diseases affecting human health |
| Old growth forests | forests that have been around for a long time |
| Even aged stands | three classifications of trees - height, age and diameter |
| Plantations | an estate that trees or other crops have been planted |