Earth's Resources.




Renewable Resources are easily replenished. Can only take short spans of time. Months, years, or decades.


Nonrenewable Resources take millions of years for it to form and accumulate.


Fossil Fuels are hydrocarbons that may be used as fuel including coal, oil, and natural gas.


Tar Sands and Oil Shale - Fuels derived from tar sands and oil shales could become good substitutes for dwindling petroleum supplies.


Formation of Mineral Deposits - some of the most important mineral deposits form through igneous processes and from hydro thermal solutions.


Nonmetallic Mineral Resources - are extracted and processed either for he nonmetallic elements they contain or for their physical and chemical properties.




ALTERNATE ENERGY RESOURCES


Solar Energy has two advantages.
-solar energy's fuel is "free"
-solar energy is non-polluting


Nuclear Energy 
-in nuclear fission, the nuclei of heavy atoms such as uranium-235 are bombarded with neutrons.
-the uranium nuclei split into smaller nuclei and emit neutrons and heat energy.


Wind Energy


Hydroelectric Power 
-power generated by falling water.
-The water held in a reservoir behind a dam is a form of stored energy that can be released through the dam to produce electric power.
-the strong water flow that results drives turbines and electric generators.


Geothermal Energy
-is harnessed by tapping natural underground reservoirs of steam and hot water.
-hot water is used directly for heating and to turn turbines that generate electric power.


Tidal Power
-Tidal power is harnessed by constructing a dam across the mouth of a bay or an estuary in coastal areas.
-the strong in-and-out flow of tidal water drives turbines and electric generators.






WATER, AIR, and LAND RESOURCES


Freshwater Pollution
-Point source pollution - comes from a known and specific location, such as factory pipes.
-Nonpoint source pollution - is pollution that does not have a specific point of origin
-Runoff - is the water that flows into the ground, often carrying nonpoint source pollution


Earth's Blanket of Air
-The chemical composition of the atmosphere helps maintain life on Earth
-Pollution in the Air
   -The increase of carbon dioxide in the atmosphere has altered the carbon cycle and contributed to global warming -- the unnatural warming if the lower atmosphere.
   -Through a series of chemical reactions, theses pollutants in the air are converted into acids that are a major cause of acid precipitation.


Land Resources
-Earth's land provides soil and forests, as well as mineral and energy resources
-Damage to land resources
   -mines produce many mineral resources, but mineas are destroying, soil, vegetation, and Earth's contours
   -mines also cause soil erosion and pollution that contaminates soil and water and destroys ecosystems.




the topics that are written in this page were checked by my professor, Mr. Crisencio Paner. Learn more about him.