APES: 6.12 Wind Energy

Front

What is wind energy?

Back

Wind energy is the energy obtained from the movement of air (wind) which can be converted into mechanical energy and then into electrical energy using wind turbines.

Front

How do wind turbines generate electricity?

Back

Wind turbines convert the kinetic energy of wind into mechanical energy through rotating blades, which then turns a generator to produce electricity.

Front

What environmental impact do wind turbines have?

Back

Wind turbines can pose a threat to birds and bats, which may be injured or killed by turbine blades.

Front

What is the sequence of electricity generation using wind?

Back

The correct sequence is: 1) Wind turns the wind turbine blade, 2) The gearbox transfers mechanical energy to the generator, 3) The generator converts mechanical energy into electrical energy, 4) Electricity is transferred to the grid.

Front

Where are winds generally stronger?

Back

Winds are generally stronger higher off the ground due to less friction and obstacles.

Front

Which energy source does NOT use a turbine?

Back

Solar energy does not use a turbine; it converts sunlight directly into electricity using photovoltaic cells.

Front

Is wind energy renewable?

Back

Yes, wind energy is a renewable source of energy as it is constantly replenished by natural processes.

Front

What are the main components of a wind turbine?

Back

The main components of a wind turbine include the rotor blades, gearbox, generator, tower, and control system.

Front

What is the role of the gearbox in a wind turbine?

Back

The gearbox increases the rotational speed from the turbine blades to the generator, allowing for efficient electricity generation.

Front

What are the advantages of wind energy?

Back

Advantages of wind energy include being renewable, reducing greenhouse gas emissions, and having low operational costs.