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Sceince Pssa vocab
| Term | Definition |
|---|---|
| ecosystem | A community of living organisms and their interrelated physical and chemical environment. |
| Environment | The total of the surroundings influencing each living being’s existence, including physical, biological and all other factors; the surroundings of a plant or animals including other plants or animals, climate and location. |
| homeostatis | The tendency for a system to remain in a state of equilibrium by resisting change. |
| abiotic | A nonliving factor or element (e.g., light, water, heat, rock, energy, mineral). |
| biotic | An environmental factor related to or produced by living organisms. |
| biomes | A community of living organisms of a single major ecological region. |
| niche | The role played by an organism in an ecosystem; its food preferences, requirements for shelter, special behaviors and the timing of its activities (e.g., nocturnal, diurnal), interaction with other organisms and its habitat. |
| consumer | Those organisms that obtain energy by feeding on other organisms and their remains. |
| decomposer | An organism, often microscopic in size, that obtains nutrients by consuming dead organic matter, thereby making nutrients accessible to other organisms; examples of decomposers include fungi, scavengers, rodents and other animals. |
| shredder | Through chewing and/or grinding, microorganisms feed on non-woody coarse particulate matter, primarily leaves. |
| dichotomus | Divided or dividing into two parts or classifications. |
| pest | A label applied to an organism when it is in competition with humans for some resource. |
| integrated pest managment | A variety of pest control methods that include repairs, traps, bait, poison, etc. to eliminate pests. |
| acid deposition | Precipitation with a pH less than 5.6 that forms in the atmosphere when certain pollutants mix with water vapor |
| stream order | Energy and nutrient flow that increases as water moves toward the oceans (e.g., the smallest stream (primary) that ends when rivers flow into oceans). |
| topographic map | representation of a region on a sufficient scale to show detail, selected man-made and natural features of a portion of the land surface including its relief and certain physical and cultural features |
| watershed | The land area from which surface runoff drains into a stream, channel, lake, reservoir or other body of water; also called a drainage basin. |
| hydrology | The scientific study of the properties, distribution and effects of water on the earth’s surface, in the soil and underlying rocks and in the atmosphere |
| groundwater | Water that infiltrates the soil and is located in underground reservoirs called aquifers. |
| mitigation | The policy of constructing or creating man-made habitats, such as wetlands, to replace those lost to development. |
| lentic | Relating to or living in still water. |
| lotic | Relating to or living in actively moving water. |
| fact | Information that has been objectively verified. |
| theory | Systematically organized knowledge applicable in a relatively wide variety of circumstances; especially, a system of assumptions, accepted principles and rules of procedure devised to analyze, predict the nature of a specified set of phenomena |
| hypothesis | An assertion subject to verification or proof as a premise from which a conclusion is drawn. |
| law | Summarizing statement of observed experimental facts that has been tested many times and is generally accepted as true. |
| model | A description, analogy or a representation of something that helps us understand it better (e.g., a physical model, a conceptual model, a mathematical model) |
| inquiry | A systematic process for using knowledge and skills to acquire and apply new knowledge |
| patterns | Repeated processes that are exhibited in a wide variety of ways; identifiable recurrences of the element and/or the form |
| regulation | A rule or order issued by an executive authority or regulatory agency of a government and having the force of law. |
| Closing the loop | A link in the circular chain of recycling events that promotes the use of products made with recycled materials |
| Non-renewable resources | Substances (e.g., oil, gas, coal, copper, gold) that, once used, cannot be replaced in this geological age |
| renewable | A naturally occurring raw material or form of energy that will be replenished through natural ecological cycles or sound management practices (e.g., the sun, wind, water, trees) |
| recycling | Collecting and reprocessing a resource or product to make into new products |
| composting | The process of mixing decaying leaves, manure and other nutritive matter to improve and fertilize soil |
| Evolution | |
| Extinction | |
| Endangered species | |
| Equilibrium | |
| Sustainability | The ability to keep in existence or maintain. A sustainable ecosystem is one that can be maintained. |
| Succession |
Created by:
jayden17
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