Wind Turbines: Harnessing the Power of the Wind

Wind turbines convert wind's kinetic energy into mechanical power, which can be used for various tasks or converted into electricity. They operate on a simple principle, using wind to turn blades connected to a rotor and generator. Wind is a form of mechanical energy, influenced by atmospheric conditions and terrain. There are two main types of wind turbines: horizontal axis and vertical axis. These turbines can be installed on land or offshore, with utility-scale turbines grouped in wind farms for maximum power output, while smaller turbines serve individual homes or specific tasks.

What is the primary function of the rotor in a wind turbine?

• To store energy

• To convert wind energy into mechanical energy

• To measure wind speed

• To stabilize the turbine

How does wind energy originate?

• From ocean currents

• From the uneven heating of the Earth's surface by the sun

• From volcanic activity

• From the rotation of the Earth

Which of the following is NOT a use of wind energy?

• Heating homes directly

• Sailing

• Generating electricity

• Flying a kite

What is a characteristic of horizontal axis wind turbines?

• They are similar to the Eggbeater style

• They usually have two or three blades

• They have blades facing away from the wind

• They are only used offshore

What is the typical power range for utility-scale wind turbines?

• 50 to 100 kilowatts

• 1 to 10 megawatts

• 100 kilowatts to several megawatts

• 10 to 50 kilowatts