Energy Sources: Part 2 Energy Sources: Part 2 Renewable Sources of Energy Renewable Sources of...

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Transcript of Energy Sources: Part 2 Energy Sources: Part 2 Renewable Sources of Energy Renewable Sources of...

  • Energy Sources: Part 2Renewable Sources of Energy

  • What is a renewable energy source?An energy source is renewable if it is constantly being supplied.

  • What are some examples?

    Solar EnergyHydroelectricityWind PowerBiomass FuelsGeothermal Energy

  • Solar EnergyThe warmth from the sun is solar energy.The Sun constantly gives off energy in the form of heat and light.

  • Capturing the Suns EnergySolar Power Plants use giant mirror to focus the suns rays into a tank of water.The water heats up and turns into steam. That steam is used to create electricity.

  • Capturing the Suns EnergySolar Cells are used to convert solar energy into electricity.The cells act like a battery.What are some items that use solar cells?

  • Active vs. PassivePassive Solar Heating uses the Suns energy for heat. This energy is then spread through a building without using fans or pumps.Passive Solar Heating happens when you leave a car in a sunny spot for a long time.

  • Active vs. Passive

    Active Solar Heating systems capture the Suns energy and store it in water tanks.Fans are used to distribute the heat throughout the building.

  • HydroelectricityHydroelectricity is electricity that is made from flowing water.In a hydroelectric power plant, flowing water spins a turbine to create electricity.

  • Examples of HydroelectricityDams are used to create hydroelectricity.The Hoover Dam in Nevada Hydroelectric power is the widely used renewable resource.

  • Downside of HydroelectricityIn the U.S.A., the best rivers already have dams.What are some other downsides to hydroelecticity?What effect does it have on the environment?

  • Wind Power!Just like hydroelectricity, wind can be used to spin a turbine and create electricity.

  • Wind Power!Just like hydroelectricity, wind can be used to spin a turbine and create electricity.

  • Biomass FuelsWood was one of the first biomass fuels used.Biomass Fuels are fuels that are made from living things.

  • Biomass FuelsOther examples of biomass fuels are leaves, food wastes, and manure.Biomass materials can be converted into other fuels.For example corn

  • Geothermal EnergyGeothermal Energy uses the heat from the Earths hot magma for energy.