Energy Sources

Why is solar energy considered renewable energy?

• It's cheaper than fossil fuels
• The sun's energy would not run out for billions of years
  
• Solar energy recharges batteries
• All of them

_____________ power is electricity produced by flowing water.

• Solar 
• Wind 
• Hydroelectric 
• water

Wind Energy is...

•  Energy that comes from harnessing the movement of the air

• Energy that comes from the Sun directly to solar panels

• A source of nonrenewable energy

• Fuel from plant material

The house illustrated here uses panels on the roof to collect a natural resource and convert it into electricity that can be used.
Which alternative energy source does this house use?

• Water
• Wind
• Solar
• Geothermal

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Heat transferred from beneath the surface of Earth and used to produce energy for human use is...

• Hydropower
• Wind Energy
• Geothermal Energy
• Solar Energy

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All of the following are considered renewable energy sources EXCEPT –

• Wind

• Coal

• Biomass

• Solar

Which one of these is NOT a type of renewable energy? (choose all that apply)

• solar

• wind

• biomass

• nuclear

• fossil fuels

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

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

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How does biomass reduce our carbon footprint by producing less CO2 than fossil fuels?

• Plants absorb the same amount of CO2 that is released when it is burned.
• Plants remove CO2 from the atmosphere and put it permanently into the ground.
• Biomass filters CO2 to make it more environmentally stable.
• Biomass doesn't release any CO2 when burned.

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Which renewable energy does not require spinning a turbine? (a)  

• hydroelectric
• wind
• tidal
• photovoltaic cells