click below
click below
Normal Size Small Size show me how
PSSA Vocab part 2
| Term | Definition |
|---|---|
| fact | information that has been objectively verified |
| theory | organized knowledge to explain the nature or behavior of a specified set of phenomena. |
| hypothesis | an assertion subject to verification or proof as a premise from which a conclusion is drawn. |
| law | statement of experimental facts that has been tested many times and is accepted as true. |
| model | a description, analogy or a representation of something that helps us understand it better. |
| 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. |
| regulation | a rule or order issued by a 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 material |
| non-renewable sources | 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 energy replenished through nature (e.g., the wind, water) |
| 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 | a process of change that explains why what we see today differs from what existed previously. |
| extinction | the complete elimination of a species from the Earth |
| endangered species | a species that is in danger of extinction throughout all or a significant portion of its range |
| equilibrium | the ability of an ecosystem to maintain stability among its biological resources (e.g., forest, fisheries, crops) so that there is a steady optimum yield |
| sustainability | ability to keep in existence or maintain. An ecosystem is one that can be maintained. |
| succession | the series of changes that occur in an ecosystem with the passing of time |