Rotors and turbines

What makes wind turbine blades turn?

• Sun
• Clouds
• Wind

Where would we find many wind turbines?

• Wind Farm
• Tree Farm 
• Gold Mine

What changes wind energy into electricity?

• Box Kite
• Windsock
• Wind Turbine

What part of a wind turbine turns?

• Wires
• Blades
• Lamps

What does a wind turbine give people?

• Food
• Gasoline
• Electricity

How does electricity help people?

• Runs Appliances
• Makes Rain
• Stops Hurricanes

How tall is the tower of the world's tallest wind turbines?

• about a 100 m

• about 180 m

• about 200 m

How high is the world's highest turbine?

• about 1800 m

• about 2300 m

• about 2600 m

What is the minimum wind speed for a large wind turbine?

• about 15 km/h

• about 20 km/h

• about 25 km/h

What is the maximum wind speed for a large wind turbine?

• about 45 km/h

• about 70 km/h

• about 90 km/h