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Sceince Pssa vocab

TermDefinition
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