Alternative Energy

Which renewable energy source is made of plant or animal material?

• Fossil Fuel

• Biomass

• Geothermal

• Hydro-Electric

The solar cars operate best when?

• the gears on the motor and axle are on opposite sides.

• They are powered by artificial light.

• they are powered by natural sunlight.

• the gears are the same size on the motor and axle.

Which of the following is NOT an alternative energy source?

• fossil fuels
• geothermal
• hydroelectric
• wind 

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

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

As water flows through a dam, a generator is turned and creates enough electricity for thousands of homes. This describes...

• biofuels
• hydroelectric energy
• geothermal energy.
• potential energy

Generators are used to produce electricity from all of these sources EXCEPT _____.

• solar
• wind
• tidal
• nuclear

Oil, natural gas and coal are called ________resources because they are not easy to replace.

• fossil fuels
• cheap
• natural resources
• nonrenewable

Which of the following is a fossil fuel?

• Wind
• Coal
• Solar
• Biomass

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