Wind power

Wind power is ... (choose 2)

• energy derived from the wind

• always available

• used to produce electricity

• has no disadvantages

_________ convert the energy of the wind into electricity.

• wind turbines     

• hot air balloons

• wind mills

• solar cells

What is a wind farm?

• A farm that uses windpower

• Wind turbines grouped together in an area

• A plant that produces energy to move wind turbines

• A farm that produces wind

The basic elements of wind turbines are:

• blades, shafts, gears and generators   

• towers

• blades

• gears and blades

The wind turns the shaft fast enough to generate electricity.

• true

• false

• only during a storm

What is a disadvantage of wind turbines?

• They pollute the air.

• They do not pollute

• They produce noise and may harm some animals   

• They are "green" energy

What are advantages of wind energy?

• clean energy

• nonrenewable  

• renewable

• generate most of the electricity in the U.S.

 People have only been using wind power for the last few decades.

• true

• false

• it depends

Examples of wind power other than electrical generation might be.. (more than one answer)

• pumping water  

• heating homes

• grinding grain

• doing homework

 This is ..

• a horizontal axis wind turbine    

• a big fan

• a vertical axis wind turbine

• an egg beater