Fossil fuels


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Fossil fuels

  1. 1. I. Energy Resources A. Energy resources are natural resources that humans use to generate energy.
  2. 2. B. Most of the energy we use comes from a group of natural resources called fossil fuels 1. A fossil fuel is a nonrenewable energy resource formed from the remains of plants and animals that lived long age. 2. Examples: petroleum, coal, and natural gas C. Energy is released from fossil fuels when they are burned.
  3. 3. II. Types of Fossil Fuels A. Liquid Fossil Fuels: Petroleum 1. A liquid mixture of complex hydrocarbon compounds is called petroleum (known as crude oil) 2. Examples: gasoline, jet fuel, kerosene, diesel fuel, and fuel oil. 3. More than 40% of the worlds energy comes from petroleum
  4. 4. B. Gaseous Fossil Fuel: Natural Gas 1. A gaseous mixture of hydrocarbons is called natural gas. 2. Most natural gas is used for heating, but it is also used to generate electrical energy. 3. An advantage of using natural gas is that using it causes less air pollution than other fossil fuels, however natural gas is very flammable.
  5. 5. 1. How are similar? 2. How are they different?
  6. 6. C. Solid Fossil Fuels: Coal 1. The solid fossil fuel that humans use most is coal 2. Coal is a fossil fuel that is formed underground from partially decomposed plant material. 3. Burning coal produces large amounts of air pollution. 4. People have reduced their use of coal, however many power plants still burn coal to generate electrical energy.
  7. 7. III. How do Fossil Fuels Form? A. Petroleum and natural gas form mainly form the remains of microscopic sea organisms B. Coal forms underground over millions of years when pressure and heat cause changes in the remains of swamp plants.
  8. 8. VI. Where are Fossil Fuels Found? A. Fossil fuels are found in many parts of the world. B. Some fossil fuels are found on land, while other fossil fuels are found beneath the ocean.
  9. 9. V. How Do We Obtain Fossil Fuels? A. The kind and location of fuel determines the method used to remove the fuel. B. People remove petroleum and natural gas from Earth by drilling wells into rock that contains these resources. C. People obtain coal either by mining deep beneath Earth’s surface or by surface mining.
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