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Thru 1: pg 79Cornell Notes
Ch 5 Earth’s Energy and Mineral Resources
1. Nonrenewable Resources
• Limited amounts• Cannot be replaced at the rate they are being
used• This doesn’t mean they aren’t replenished, it
might just be a very slow process.• May be able to recycle – Example: aluminum cans
Mineral Resources
• Mined from the Earth’s crust• May be metals(copper, silver, aluminum)or
nonmetals(salt, borax, sulfur).• Used to create products we use everyday.
Types of mining
1. Subsurface mining-mines are dug into the crust to access minerals
2. Surface mining(strip mining)-Ground over the minerals is dug away to expose the mineral deposits
3. Placer mining(panning for gold)-sediments are scooped up and the mineral is separated out.
Energy Resources
• Used to generate electricity• Stored energy in resource is converted into a
useable form.• Example: Wood is burned to heat a house.
Fossil fuels
• The remains of plants and other organisms that were buried and compressed.
• Made of hydrocarbons-compounds that contain only H and C atoms.
• Includes: coal, crude oil, natural gas.• Coal is the most common fossil fuel.
HOW IS COAL MADE ???
Nuclear Energy
• Remember: fusion is the joining together of small nuclei to create a larger nucleus.
• This process releases energy.
Generating nuclear power
• Nuclear power plants use naturally occurring radioactive elements to generate electricity.
• Uranium is the most common.• As uranium undergoes fusion, it releases energy in
the form of heat.• This heat is converted into electricity.
2. Renewable Resources
• Resources that can be replaced in a normal human lifespan.
• Inexhaustible resources are those that are limitless.• Includes getting energy from:– Solar energy-Sun– Geothermal energy-Heat within the Earth’s crust– Hydroelectric energy-Moving water– Biomass energy-Burning of organic material– Wind energy-Moving air