Which of the following is NOT an alternative energy source?

• fossil fuels
• geothermal energy
• hydroelectric energy
• wind energy

Based on the data collected, which source of alternative energy is most efficient?

• Coal
• Wind
• Natural gas
• Solar

Biofuel is...

•  Energy that comes from harnessing the movement of the air
• Energy that comes from the Sun
• A source of renewable energy, such as solar, wind, or geothermal energy
• Fuel from plant material

Solar Energy is... 

• Energy that comes from harnessing the movement of the air
• Energy that comes from the Sun
• A source of renewable energy, such as solar, wind, or geothermal energy
• Fuel from plant material

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

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. 

What is biomass? 

• energy from the sun
• energy from water
• energy from wind
• energy from plant and animal waste

Wind, geothermal, and solar energy are all what type of energy resources?

• cheap
• potential
• renewable
• chemical 

This Picture Represents Which Type of Alternative Energy?

• Wind
• Solar
• Biofuels
• Geothermal

This Picture Represents Which Type of Alternative Energy?

• Wind
• Solar
• Hydroelectric
• Geothermal