1. UNIT 1: Resources and Energy Sources

2. Natural vs. Produced What are natural resources? Examples: – wood, minerals, water, animals, plants, oil, coal etc. What are produced resources? Examples – gas, alloys, composites, plastics, etc.

3. Earth’s Resources Resources come from the Earth, either in raw form or as material used to make new products. Earth ’ s resources include organisms, air, water, and soil, as well as materials such as oil, gas, and ores that are removed from the ground for processing. Two Main Classifications of Resources  Renewable resources  Nonrenewable resources

4. Renewable Resources Definition: any material or energy source that cycles, or can be replaced easily within a short time period.  Common renewable resources Food and Fiber Food and Fiber Soil Soil Wind Wind The Sun The Sun Water Water Biomass Fuels Biomass Fuels Geothermal Energy Geothermal Energy

5. Nonrenewable Resources Definition : material or energy source that cannot be replaced easily or requires extremely long amounts of time to replace itself. Common nonrenewable resourcesCommon nonrenewable resources  Ores  Rocks as Resources  Fossil Fuels Coal Coal Petroleum and Natural Gas Petroleum and Natural Gas Oil Oil

6. Fossil Fuels Definition: fuels such as wood, charcoal, peat, coal, oil, and natural gas that release energy when burned Considered nonrenewable because they take millions of years to form. Considered nonrenewable because they take millions of years to form. Major fossil fuels in developed countries include: Major fossil fuels in developed countries include:  Coal  Oil  Natural gas

7. Coal Formed when wetland plants die, are buried, and undergo physical and chemical changes over millions of years. Considered nonrenewable because they take millions of years to form

8. Petroleum and Natural Gas Formed from the remains of plants, bacteria, algae, and other microscopic marine organisms. Formed when more organic matter is produced than is destroyed, which is common in coastal waters. Chemical and physical changes result in the formation of organic matter in the form of liquids and gases.

9. Global Energy Use and Production World ’ s total energy consumption rates have been increasing in many countries, both developed and developing.  Example: China uses coal as the main resource to heat their homes. Thus, as populations increase, and consumption rates increase, coal supplies must also increase in order to meet this demand.  Why are nonrenewable energy sources not a good choice for our global energy needs?

12. Alternative Energy Resources Alternative energy sources are being pursued in many developed countries as a way to counteract the developed world's dependence on nonrenewable resources that are being exhausted faster than they can be replaced. Common alternative energy resourcesCommon alternative energy resources Solar EnergySolar Energy WindWind HydropowerHydropower Geothermal EnergyGeothermal Energy Nuclear PowerNuclear Power TrashTrash HydrogenHydrogen