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Earth Science Test #2
N/A
12
Science
7th Grade
05/18/2010

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Cards

Term
When was farming developed?
Definition
About 10,000 years ago
Term
Examples of how soil is eroded
Definition
Deforestation and by wind water and ice
Term
Are desert areas decreasing or increasing?
Definition
increasing
Term
What energy sources do we use in the US?
Definition
Petroleum, Hyroelectric Power, Geothermal Energy, wind power, and solar power
Term
Three renewable resources
Definition
Air, water, and wind
Term
Does all trash decompose in landfills?
Definition
Now, plastic does not.
Term
Where does most air pollution come from?
Definition
cars
Term
Can smog kill?
Definition
yes it can
Term
What is the greatest risk of air pollution?
Definition
It can cause cancer, asthma, headaches, and birth defects
Term
3 methods used to clean water
Definition
Filtiration, Condensation, and evaporation
Term
Advantages of Wind Power
Definition
Its cheap, renewable, and generates no pollution
Term
Disadvantages of Wind Energy
Definition
You can never predict wind and you would need lots of fans to produce energy for the world, which would cost a lot
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