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69 Cards in this Set

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Do we use more water than given or less?
More!
Uses of water at home
Dishwasher, washing machine, shower, toilet, brushing teeth, ice maker, water lawn
Uses of water in industry?
Part of the manufacturing product, cools machines, flushes out mines.
Uses of water in Transportation?
boat, barge, placement of cities (good to be on water)
What is the single largest use of water in the US?
IRRIGATION!!
What are uses of water in Recreation?
Swim, Ski, Skate, boating
Water is naturally recycled in...
The Water Cycle
Water are two examples/reasons of water shortages?
Natural Case, too high of a demand.
What gets water where it needs to go from a well?
Duct
What is the defintion of conservation?
using less of a resource
What is the RRR
Reduce, Reuse, Recycle
What are some examples of DESALINATION?
remove salt from water ($$$), distillation, freeze salt out, use ice bergs
How can you simply treat driking water? Complex?
Simple= Filter, such as Brita

Complex= Water Treatment Plant
What are disease causing organisms in water?
Coliform Detection (human & animal waste) *E. Coli
What is hardness of water?
A measure of 2 minerals, Calcium and Magnesium.
How does water get hard?
Comes from the ground where the water flows through whether it had calcium and magnesium.
What are some difficulties with hard water?
Hard water is difficult to clean with and can clog your pipes.
What is the pH scale?
The pH scale measures water's acidity.
What are the ranges in the pH scale?
1-14, 0-6.9 is acidic, 7 is neutral, 7.1-14 is basic. A lemon is acidic, and baking soda is basic.
The Acidity is the pH, pH is...
A measurement of how acidic or basic the water is.
Who is responisble to develop water quality standards? *they set concentration limits
EPA = Enviromental Protection Agency
What does a waste water treatment plant do?
Makes water safe to return to enviroment. *flown into pipes which are sanitary sewers.
What is water quality?
A measure of different substances in water. *some are harmful *some aren't harmful
Your water can be..
Public or Private
What are indications of Water Quality?
Color & Odor
What is the Septic System?
The Septic System is where your waste goes.
What are the drinking water treatment steps?
1. Filtration
2. Coagulation- alum is the chmical used to do this
3. Chloration-kills micro-organisms.
4. Aeration- removes bad taste & smell, you can add minerals & flouride.
5. Tested
6. Water Distribution
4.
Why does water move up and down?
The pressure inside
What are the steps of the Waste Water Treatment Plant?
1. Preliminary treatment
2. Primary treatment
3. Secondary treatment
4. Additional treatment
What is Water Pollution?
The addition of any substance that has a negative effect on water or living things that depend on the water.
What are Pollutants?
The substances that cause water pollution.
How do you classify pollutants sources?
Classified by how they enter the water.
What is Point Source?
Specific pollutant source can be identified. Example=pipes
What is Nonpoint Source?
Widely spread source of pollution taht can't be traced back to a specific origin. Example= runoff form field or street.
Some pollutants can build up in bodies. Two examples?
Pesticides and DDT- food chains, animals consume other animals with DDT. It can cause birth defects and cancer.
What is chlorea caused by?
Bacteria that live in human wastes.
Treatment kills bacteria, but what doesn't it kill?
Viruses or parasites. They resist chlorine.
During flooding, what happens to the extra water?
sewers can overflow and run into storm sewers which lead derectly to surface water.
What ares some problems with sewage in rural areas?
If your septic tank is near is stream it can seep into it. Septic Tank too near a hill it can flow down into a well. Animal wastes can runoff pastures.
What are some industrial wastes?
Laws cntrl point source pollution, but it still happens, burried containers have rusted and are leaking which is a nonpoint source.
What do factories create?
smoke and exhaust from burning coal that can created acid rain. Oil pollutes too.
What is heat pollution?
Water in factories that cools equpment andthe hot water is poured back into surface water. Many organisms have a small heat range.
What does runoff from farms do?
Causes algae to grow, blocks sunlight and slows the flow of water. Nutrients encourage plant growth, carries pollutants from farms such as pesticides.
What does runoff from roads do?
rain can carry oil, antifreeze, gas, salt on winter roadsd,etc., into surface water adn ground water. *Nonpoint source
What are pollution sollutions?
Clean up and prevent new pollution. Clean up began in the 1960s.
Cleanup pollution?
living organisms filter out and breakdown waste materials, bacterial can clean up toxic spills such as oil spills. Natural and artificial wetlands to filter.
Pollution Prevention?
Recycle water, use less chemicals, prevent animal waste runoff.(or use water for irrigation instead of the waste), dispose of toxic wastes properly (not down the drain)
What is Kinetic energy?
Energy from movement
What is Potential energy?
Energy waiting to be used. It can be due to the position. Example- water stored in resevoir.
How can water be used to produce elctricity?
Hydroelectric power
How can you get Hyroelectric Power?
Build a dam across a river, hold back water and become a lake. (EPB)
Water can be released and moved downhill through...
turbines which is a type of kinetic energy.
Turbines can convert _______ energy into electricity
Kinetic
__% of the world's electricity is hydroelectric power. U.S. uses __% of that.
20% world
9% US
Pros of a dam?
clean, safe, efficient, water is free not expenisve, naturally recycles through water cycle, doesn't add air pollution.
Cons of a dam?
expensive to BUILD, fish can't migrate because dam is a barrier, homes & farms flooded, destroys historical sites, only works if land is suitable- you must have a valley and fast river, present organisms can't survive.
what is plate tectonics?
a theory based on Earth Science
why do volcanoes, earthquakes happen?
plate tectonics
true or false?
the continents were once one whole continent
true!!!
what is a theory
(hint) they can be wrong!
a great deal of evidence supported by predictions...blah blah blah!!! hehe
who first observed continental drift?
Frances Bacon
who proposed the idea of continental drift?
Alfred Wegener 1912
what was the one continent called?
Pangea
do scientists actually know how the continents got the way they do now?
no...but they can guess
what are some evidences from land features?
mountain chains, coal deposits, and glaciers
how is evidence from fossils explained?
they study the places that they found the fossils and traced it into a path of where the dinosaurs roamed
how do they explain evidence from climates?
a hot natured plant found in a cold climate must have grown near the equator
what is the real reason why there is a continental drift?
convection in the mantle
what happened to Alfred Wegner??/
nobody knows!!oooooooo spooky!!!!