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Unit 3

Unit 3. Lesson 3: Nonrenewable Resources Lesson 4: Renewable Resources Lesson 5: Managing Resources. Be Resourceful!. Energy resource – a natural resource that humans use to generate energy . 2 types Renewable – resources that can be replaced quickly

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Unit 3

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  1. Unit 3 Lesson 3: Nonrenewable Resources Lesson 4: Renewable Resources Lesson 5: Managing Resources

  2. Be Resourceful! • Energy resource – a natural resource that humans use to generate energy. • 2 types • Renewable – resources that can be replaced quickly • Nonrenewable – resources that can not be replaced easily because they take a long time renew.

  3. 2 Types of Nonrenewable Resources • 1. Fossil Fuels – nonrenewable energy that forms from the remains or organisms that lived long ago. • Release energy when burned. • The energy can be converted to electricity. • 3 Main types of fossil fuels • 1. Petroleum – liquid also known as crude oil • Liquid that comes from the ground. Diesel fuels and gasoline. • 2. Natural gas – comes from the ground • Used for cooking and heating. Methane, Butane and Propane. • 3. Coal - solid comes from the ground. • Once used to heat homes and run transportation.

  4. Formation of Petroleum and natural gas? • 1. Marine organisms die and settle to the bottom. • 2. Layers of sedimentslowly bury the dead marine organisms. • 3. Heat and pressure slowly turn the remains into petroleum and natural gas. • 4. Petroleum and natural gas flow through rocks, where they become trapped and concentrated. • Humans then extract the fuel.

  5. Formation of Coal • 1. Partially decayed swamp plants sink to the bottom and change into peat. • Looks like rotting wood. • 2. As sediment buries the peat, heat and pressure change peat into lignite. • 3. As sediment builds, heat and pressure change the lignite into bituminous coal. • 4. Heat and pressure continues to change the bituminous coal into anthracite coal.

  6. Problems with Fossil Fuels • Burning them produces pollution. • Releases carbon dioxide into atmosphere =Increase in global warming. • Creates smog and acid rain. • Oil spills • Flammable/combustible

  7. 2 Types of Nonrenewable Resources • 2. Nuclear Fuel – the energy released when the nuclei of atoms are split or combined. • Nuclear fission – split an atom • We use Uranium as the fuel, which is nonrenewable! • Nuclear fusion – combine atoms together • The sun’s energy is a result of nuclear fusion

  8. Nuclear Fuel

  9. Dangers of Nuclear Fuels • Produce dangerous waste that is radioactive. • Harmful radiation may also be released into the environment. • Can cause cancer from radiation if the core melts.

  10. Lesson 4:Renewable Energy Resources

  11. Turn, Turn, Turn • Wind energy – uses the force of moving air to drive an electric generator or do other work. • Wind is created by the sun’s uneven heating of air masses in earth’s atmosphere. • Wind is renewable! • Turbines or windmills generate electricity by the moving blades. • They do not generate a lot of air pollution!

  12. Moving Water • Moving water has kinetic energy! • Hydroelectric energy – electrical energy that is produced by moving water. • The sun powers the water cycle • Water is renewable!

  13. Let the Sunshine In • Solar energy – the energy received by Earth from the sun in the form of radiation. • Solar panels to heat homes. • Photovoltaic cell – used to convert solar energy into electricity - used in solar calculators

  14. Biomass Fuels • Biomass – organic matter from plants and animal waste that contains chemical energy. • This energy can be used to cook food, provide warmth, power engines. • Biomass sources include trees, crops, alcohol, animal waste and peat. • Biomass Fuels are renewable! • The sugars in corn and sugarcane are converted to ethanol which can be burned as a source of fuel in cars.

  15. Geothermal Energy • Geothermal energy – energy produced by heat from earth’s interior. • Examples include: geyser, hot springs, volcanoes. • Geothermal power plants pump the steam or hot water from underground to spin turbines that generate electricity. • The electricity is generated from water heated by magma pumped beneath Earth’s surface.

  16. Lesson 5:Managing Resources

  17. Effective Ways to Manage Resources • Stewardship – the careful and responsible management of resources. • Conservation – the protection and wise use of natural resources. • Recycling – reduces the use of new resources. • Reduce • Reuse • Recycle

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