1. Energy Resources
Chapter 5, Section 4
Mrs. Boguslaw

2. Nonrenewable Energy Resources
Two types
Cannot be replaced
Are replaced more slowly than they are used
Most important: fossil fuels
Fossil fuel: a nonrenewable energy resource formed from the remains of organisms that lived long ago

3. Main Types of Fossil Fuels
Coal: often used to generate electrical energy
Petroleum
Gasoline, kerosine, wax, petrochemicals
Natural Gas: often used in heating systems

7. Fossil Fuels
Fossil fuels are the main energy source generated in the United States.
Fossil fuels are easy to transport and provide a large amount of thermal energy per unit of mass
Burning fossil fuels are converted into electrical energy through the use of a generator.

10. Other Types of Nonrenewable Energy
Nuclear Energy: used to create electrical energy
Generates thermal energy that boils water, steam turns a turbine, which runs a generator. The generator changes kinetic energy into electrical energy
Only generated from radioactive elements
Supply is limited y/

11. Renewable Energy Resources
Naturally replaced more quickly than they are used
Some are practically limitless
Usually produce little/no carbon waste emissions

12. Renewable Energy Resources
Solar energy
Energy from water
Wind energy
Geothermal energy
Biomass

13. Solar Energy
Sunlight can be changed into electrical energy through solar cells
Sun’s energy can be used directly as light or heat
Only works in sunny areas
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14. Energy from Water Water can turn a turbine to create electrical energy
Potential energy can be stored in dams
Can disrupt river’s ecosystem

15. Wind Energy
Kinetic energy of wind turns the blades of a windmill, which turns a turbine
Turbines convert wind to electrical energy
Only works in windy areas
ogy/windenergy/

16. Geothermal Energy
Thermal energy caused by the heating of the earth’s crust
Pumps send water down into hot rock and it comes out as steam, which turns a turbine —> electrical energy
Is only practical in areas near hot spots
Produces wastewater

17. Biomass Energy
Organic matter (plants, wood, waste, etc.) can be burned to release energy
Produces smoke
Requires lots of land