Science Glossary 2

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Created by:

Brooksj1263  on October 22, 2007

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jhs, pssa

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Science Glossary 2

Law
Summarizing statement of observed experimental facts that has been tested many times and is generally accepted as true
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Definitions

Law Summarizing statement of observed experimental facts that has been tested many times and is generally accepted as true
Lentic Relating to or living in still water
Lotic Relating to or living in actively moving water
Manufacturing technology The ways that humans produce goods and products
Mitigation The policy of constructing or creating man-made habitats, such as wetlands, to replace those lost to development
Mitosis The sequential differentiation and segregation of replicated chromosomes in a cell's nucleus that precedes complete cell division
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).
Niche 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
Nonpoint source pollution Contamination that originates from many locations that all discharge into a location (e.g., a lake, stream, land area)
Nonrenewable resources Substances (e.g., oil, gas, coal, copper, gold) that, once used, cannot be replaced in this geological age
Nova A variable star that suddenly increases in brightness to several times its normal magnitude and returns to its original appearance in a few weeks to several months or years
Patterns Repeated processes that are exhibited in a wide variety of ways; identifiable recurrences of the element and/or the form
Pest A label applied to an organism when it is in competition with humans for some resource
Physical technology The ways that humans construct, manufacture and transport products
Point source pollution Pollutants discharged from a single identifiable location (e.g., pipes, ditches, channels, sewers, tunnels, container of various types).
Radioactive isotope An atom that gives off nuclear radiation and has the same number of protons (atomic number) as another atom but a different number of neutrons
Recycling Collecting and reprocessing a resource or product to make into new products
Regulation A rule or order issued by an executive authority or regulatory agency of a government and having the force of law
Renewable A naturally occurring raw material or form of energy that will be replenished through natural ecological cycles or sound management practice (e.g., the sun, wind, water, trees).
Risk management A strategy developed to reduce or control the chance of harm or loss to one's health or life; the process of identifying, evaluating, selecting and implementing actions to reduce risk to human health and to ecosystems
Scale Relates concepts and ideas to one another by some measurement (e.g., quantitative, numeral, abstract, ideological); provides a measure of size and/or incremental change
Science Search for understanding the natural world using inquiry and experimentation
Shredder Through chewing and/or grinding, microorganisms feed on non-woody coarse particulate matter. primarily leaves
Stream order Streamorder 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)
Succession The series of changes that occur in an ecosystem with the passing of time
Sustainability The ability to keep in existence or maintain. A sustainable ecosystem is one that can be maintained
System A group of related objects that work together to achieve a desired result
Closed loop system A group of related objects that have feedback and can modify themselves
Open loop system A group of related objects that do not have feedback and cannot modify themselves
Subsystem A group of related objects that make up a larger system (e.g., automobiles have electrical systems, fuel systems)
Technological design process Recognizing the problem, proposing a solution, implementing the solution, evaluating the solution and communicating the problem, design and solution
Technology education The application of tools, materials, processes and systems to solve problems and extend human capabilities
Theory of evolution A theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modification in successive generations
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 or otherwise explain the nature or behavior of a specified set of phenomena
Tool Any device used to extend human capability including computer-based tools
Topographic map A 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; the portrayal of the position, relation, size, shape and elevation of the area
Transportation systems A group of related parts that function together to perform a major task in any form of transportation
Transportation technology The physical ways humans move materials, goods and people
Trophic levels The role of an organism in nutrient and energy flow within an ecosystem (e.g., herbivore, carnivore, and decomposer)
Waste stream The flow of (waste) materials from generation, collection and separation to disposal
Watershed The land are from which surface runoff drains into a stream, channel, lake, reservoir or other body of water; also called a drainage basin
Wetlands Lands where water saturation is the dominant factor determining the nature of the soil development and the plant and animal communities (e.g., sloughs, estuaries, marshes)

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