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science vocab
| Term | Definition |
|---|---|
| law of conservation of mass | mass cant be created nor destroyed, just change forms |
| reactant | the materials of the reaction that cause it to happen |
| product | the materials formed from the reaction |
| flammabilty | able to burn , or catch on fire |
| precipitate | material formed as a result of chemical change |
| phase change | changing from one state of matter to another |
| chemical change | reaction that forms a new substance, evidence includes: formation of precipitates, change of temperature, change of color, and formation of gas (bubbles) |
| physical property | characteristics that can be observed with your sense or measured |
| period | a row on the periodic table |
| group or family | a column on the periodic table |
| atomic mass | the average number of protons and neutrons in an atom |
| element | a pure substance that has the 2 or more of the same substances |
| compound | two or more elements chemically bonded, example : water |
| conductivity | able to transmit electricity, heat |
| unconformity | when a rock disturbs a series of undisturbed layers |
| law of superstition | in an undisturbed set layer of rock the younger rock is on the bottom |
| half-life | when the amount of a radioactive element is decreased by half after a period of time |
| absolute dating | using radioactive elements to determine the EXACT age of a fossil, rock, or artifact. |
| relative dating | using the law of superstition and index fossils to give an estimate of a fossil or rock layers |
| point source | pollution that comes from a single, identifiable site |
| non point source pollution | pollution that comes from many places of unidentified source |
| contaminant (pollutant) | something that makes water no longer suitable for use |
| water treatment plan | the act or process of making water more potable or useful, as by purifying, clarifying, softening, or deodorizing it. |
| estuary | the tidal mouth of a large river |
| groundwater | water held underground in the soil or in crevices in rock |
| solvent | able to dissolve other substances. |
| reservoir | a large natural or artificial lake used as a source of water supply |
| brackish water | water slightly salty, as is the mixture of river water and seawater in estuaries |
| shore (inter-tidal zone) | the area between the land and sea that is covered by water at high tide |
| polarity | the state of having two opposite or contradictory tendencies, opinions, or aspects |
| impermeable | not allowing fluid to pass through |
| aquifer | a body of permeable rock that can contain groundwater |
| cold seep | an area of the ocean floor where hydrogen sulfide, methane and other hydrocarbon-rich fluid seepage occurs, often in the form of a brine pool |
| chemo-synthesis | |
| open ocean (pelagic zone) | |
| cohesion | |
| permeable | |
| river basin/ water shed | |
| phytoplankton | |
| up-welling | |
| tributary | |
| adhesion | |
| glacier/ice cap | |
| ocean current | |
| deep ocean (benthic zone) | |
| salinity | |
| eutrophication |
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