Alternative Energy 2021

By 2050, electric vehicles are expected to be the primary type of vehicle. What will cause this change?

• We have already passed peak oil predicted by Hubbert.

• Oil will be plentiful but people will realize it causes emissions that contribute to global warming

• Charging stations sponsored by the government

• Electric vehicles are cheaper to produce than gas powered cars.

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Biofuel is...

•  Energy that comes from harnessing the movement of the air
• Energy that comes from the Sun
• A source of non- renewable energy
• Fuel from plant material

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Hot water is pumped up from deep inside Earth and is used to heat homes or to generate electricity. This describes...

• biofuels
• hydroelectric energy
• geothermal energy
• hot water heating

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Corn, wheat, and soybeans can be made into a substance called ethanol. In some places, ethanol is part of a mixture used to power cars and trucks. What type of alternative energy resource is ethanol?

• non-renewable
• Geothermal
• Biofuel
• Solar

What is one of the biggest disadvantages to wind turbines?

• They're big
• They can interfere with bird migration
• They're expensive
• It takes a long time to put one up and then maintain it

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Why are fossil fuels more widely used than solar energy?

• Solar energy is harder to find
• Fossil fuels are much cheaper
• Fossil fuels are more abundant
• The sun's energy can never be harnessed

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The purpose of the panels is to change solar energy into ____________.

• light energy
• electrical energy
• chemical energy
• mechanical energy

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Why are not American's roofs crammed with more solar panels? 

• They are ugly.
• They are uninformed.
• Expensive start-up cost
• People enjoy paying bills. 

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What is the main reason why hydrogen is more difficult to store than diesel?

• Hydrogen is a gas at room temperature but diesel is a liquid

• Hydrogen can be liquefied by cooling it

• Hydrogen can be stored under pressure

What is a strength of using hydrogen-oxygen fuel cells in manned spacecraft, compared to using chemical cells?

• They produce electricity

• They produce water that the astronauts can drink

• They produce a voltage