Pollution
Terms
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- Which pollution comes from a single source?
- point-source pollution
- How is non-point source pollution difficult to control?
- It comes from many sources
- What are DO levels?
- level of dissolved oxygen in the water
- How many steps are there in the sewage treatment plant?
- 5-7
- at what level is water too acidic for aquatic life?
- below 6.0
- what is a sewage treatment plants?
- a facility that cleans waste from the water
- what are two systems for cleaning water?
- sewage treatment plants, septic tanks
- what percent of our water is used for industry?
- 19%
- what kind of pollution is caused by run off or fertilizers?
- non-point source
- what is any natural material that is used by humans called?
- natural resource
- is coal renewable or non renewable?
- non
- conserving resources means?
- saving resources
- what are two major renewable resources?
- wood and water
- earth provides everything needed for ?
- life
- what is a nonrenewable resource?
- a resource that cannot be replaced at the same rate it is used
- recycling is?
- reusing materials from waste or scrap
- recycling reduces?
- the amount of resources needed from the earth
- name three ways to conserve natural resources
- dont waste, use only when needed, take care of resources, limit use of energy
- how can primary pollutants get put intot he air? 1 example
- human or natural activity
- automobile exaust can cause what when it enters the air?
- smog
- what type of air can keep smog close to the ground?
- warm air
- what is precipitation that contains acids from air pollution?
- acid percipitation
- what are scrubbers used for?
- to remove pollutants before they enter the air
- what are two short term affects of air pollution?
- headache,nausea,irratated eyes nose and throat, coughing, worsen asthma
- what are two long term affects?
- emphysemia, lung cancer, lung damage, heart disease
- when was the clean air act passed?
- 1970
- what does EPA stand for?
- envirmental protection agency
- what are manufacters trying to make cars run on instead of gasoline?
- hydrogen, natural gas
- what is a rapid change in a body of water called?
- acid shock
- what is ventilation?
- mixing of indoor and outdoor air
- what chemical was causing the ozone to break down into oxygen?
- CFCs
- what years did scientists find a hole in the ozone?
- 1980s
- what are the cars that use a combonation of gasoline and electric power called?
- hybrid cars
- what is an example of point source pollution?
- leaking oil tanker, factory, waste water treatment plant
- what was found along beaches in the 1980s?
- bandages, vials of blood, syringes
- how much med waste is pruduced yearly in the united states?
- 3 million tons
- what is sludge?
- solid part of raw sewage
- what did some people do with sludge?
- dump it into the ocean
- how much money did the exxon oil company spend cleaning up an oil spill?
- 2 billion
- what is a startegy used to preven oil spills?
- using two hulls
- what is adopt a beach?
- a public beach clean up program
- how much money does the USA spend to protect the ocean?
- 130 million
- what is soil conservation?
- trying to keep soil fertile
- what is the region where an animal lives called?
- it habitat
- what is soil needed for? (one)
- helps plants get moisture, also stores and controls water
- overused soil becomes?
- infertile
- erosion is?
- the process by which wind water and rain transports sediments
- what is plowing to the slope called?
- contour plowing
- what is planting different crops to restre nutrients called?
- cover crops
- what is leaving old crops on the field called?
- No till farming
- what is a way to preven erosion on steep slopes?
- terracing
- who reccomened to plant soybeans and peanuts to return nutrients to the soil?
- george washington carver
- using different crops each is?
- crop rotation