Energy Resources Chapter 5, Section 4 Mrs. Boguslaw

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

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

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.

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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 https://www.brainpop.com/science/energy/nuclearenerg y/

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

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

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 https://www.brainpop.com/science/energy/solarener gy/

Energy from Water Water can turn a turbine to create electrical energy Potential energy can be stored in dams Can disrupt river’s ecosystem

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 https://www.brainpop.com/technology/energytechnol ogy/windenergy/

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

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

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