| Term | Definition |
|---|
| irrgation | using water to water crops and plants: spray irrigation, flood irrigation, and drop irrigation |
| aquaculture | the science of farming fish for food or to repopulate bodies of water |
| fisheries | where farm-raised fish r stored. |
| advantages/disadvantages of dams | advs. - can create resevoirs or lakes...disadvs. - can change the landscape of rivers and cause flooding. |
| reservoirs | bodies of water created to store and purify water for human use |
| locks | section of water thats closed off by gates in which the water level is raised or lowered or raised for ships to pass |
| concentration | the amount of a substance in another substance. measured in parts per million |
| EPA | epa sets the amount of concentration of certain chemicals that can be allowed in water |
| steps of drinking water treatment | filtration - water is passed through screens to filter it. coagulation - chemicals are put in water to create flocs (globs of sludge that attract bacteria). 2nd filtration - water is filtrated again. chlorination - chlorine is added to kill bacteria. aeration - air is pumped to cloean water and remoive hard flavors. |
| wastewater | used water that is treated in septic or sewage systems |
| sewage system | plant where wastewater is treated |
| septic system | an underground tank that holds wastewater and waste. |
| point-source/nonpoint source pollution | point-source - pollution that can be stopped because it can be traced to a specific place. nonpoint source - pollution that is hard to stop because it cannot be traced back to one source. |
| runoff | ? help me ? |
| drought | period of abnormally low rainfall that can dry up rivers and aquifers |
| conservation | using less water or recycling water. water can be conserved in the hom, the industy, and agriculture |
| acid rain | polution from the west mixes with clouds from the east and rain falls in a acidic harmful form |
| desaliniztaion | process of removing salt from water |
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