Understanding Wind Energy

What causes wind to blow?

• Differences in air pressure

• Movement of the Earth

• Changes in temperature

• Rotation of the moon

What are the primary causes of atmospheric circulation?

• Solar radiation variations

• Earth's axial tilt

• Pressure differences in the atmosphere

• All of the above

What is the role of wind turbines?

• To capture kinetic energy of winds

• To generate fossil fuel

• To create greenhouse gases

• To heat water

What is wind energy?

• A converted form of solar energy

• A type of fossil fuel

• A method of cooling air

• A process of nuclear fusion

What is the significance of wind energy in reducing CO2 emissions?

• It is a major source of renewable energy

• It is a finite energy source

• It generates radioactive waste

• It is not significant

What factors determine wind speed?

• Geographic conditions

• Weather conditions

• Time of day

• All of the above

What is wind turbulence?

• Fluctuation in wind speed

• Constant wind speed

• A type of wind measurement

• A method of generating electricity

What is the Weibull distribution used for?

• Describing wind speed variation

• Calculating wind power density

• Measuring air pressure

• Assessing wind turbine efficiency

What is the major advantage of horizontal axis wind turbines?

• They can start at very low wind speeds.

• They have a horizontal axis of rotation.

• They can control rotor speed and power output.

• They are easier to manufacture.

What is a disadvantage of Savonius rotors?

• They can start at very low wind speeds.

• They have a high material demand.

• They are very efficient.

• They are easy to manufacture.