Alternative Energies

What is the limiting factor in keeping the efficiency of hydrogen fuel cells low?

• a cheap supply of oxygen

• a cheap supply of hydrogen

• a cheap supply of water

• developing a cheap platinum catalyst membrane

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What may be future possibilities in the making of hydrogen and breaking down water?

• fungi and bacteria

• animals

• algae or plants

• algae and bacteria

What are the major constraints keeping us from going with 100% alternative energy?

• solar and wind energies are getting all the federal funding

• no one has come forward with alternatives to fossil fuels

• our infrastructure is built around fossil fuels

• our infrastructure is built around nuclear energy

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Ethanol from corn has the same EROEI as

• ethanol

• biodiesal

• wood

• passive solar

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All current alternative energies provide energy for which anthropogenic use?

• heating

• electricity

• transportation

• cooking

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The push away from fossil fuel use and toward alternative energies is slowed due to which of the following. Choose TWO that apply.

• alternative energies are expensive to install and maintain compared to the fossil fuel infrastructure that is currently in place.

• consumers prefer to burn fossil fuels for needed energy

• not all places have weather and geological conditions that would allow practical alternative energy collection.

• governments do not regulate energy use.

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Which of the following energy sources do not release CO2? Choose all that apply.

• natural gas

• nuclear

• biomass

• geothermal

• oil

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Which source of renewable energy has possible negative environmental impacts such as noise pollution or danger to bats and birds?

• wind turbines

• solar

• geothermal

• biomass

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Which of the following is considered a renewable energy source?

• Coal

• Natural Gas

• Solar Power

• Nuclear Power

What is the primary advantage of using wind energy over fossil fuels?

• Higher energy density

• Lower initial cost

• No greenhouse gas emissions

• Consistent energy output

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