Warm-Up What is it called when water enters the ground? What do you think affects the rate at...
Transcript of Warm-Up What is it called when water enters the ground? What do you think affects the rate at...
Warm-Up What is it called when water enters the ground?
What do you think affects the rate at which water soaks into the soil? What type of soil do you think would allow water to sink in the fastest or the slowest?
Water Quality
Types of Water Pollution Point Source Pollution –
contaminants have an identifiable source Smokestacks, car tailpipe
Nonpoint Source Pollution Contaminant source cannot be
found
Several farmlands in the same area
Major Sources of Water Pollution Agriculture: by far the
leader Pesticides, fertilizers
Industrial: factories and powerplants
Mining: surface mining toxics, acids, sediment
Non-Point Water Pollution
Non-Point pollution reaches bodies of water through streets and sewers. Pesticides, fertilizers are washed off
lawns Animal feces float away from farms
96% of water pollution is from non-point sources
Warm-Up Activity
Water Pollution handout Answer Review questions
Video Answer video questions
Wastewater Treatment Plants Water goes to a treatment plant after it is flushed
Not all harmful substances are removed Industrial wastewater and storm runoff contain toxic
substances that aren’t removed
Physical Properties of Water Water Temperature
Total Dissolved Solids-Combined living and non-living substances dissolved in water Agriculture
Point Source Pollution
Discharge from sewage treatment plants
Total Suspended Solids-Living and non-living substances suspended in water
Chemical Properties of Water pH-Measurement of the hydrogen
concentration in water pH above 7 = Basic
pH below 7 = Acidic
Dissolved Oxygen-Amount of oxygen dissolved in water Low oxygen levels can kill ecosystems
Biotic Index Biotic Index-Indicates the types of organisms present in an environment
Used to measure water quality of a stream or river
Measures from 1-10. (Excellent, Good, Fair or Poor)
River Basins A river basin is the area that
includes the streams that a river is going to feed into
Watersheds (river basins) are separated from each other by areas of higher elevation (ridge lines/divides).
NC River Basins There are 17 river basins in North Carolina
4 of them empty into the Atlantic Ocean
Some of them flow into South Carolina
The remaining flow westward to the Mississippi River
Important for states to reduce the amount of pollution in the rivers because the rivers do flow to other states