All Flashcards
What are the steps involved in generating electricity from wind?
Wind turns turbine blades -> rotation converts kinetic energy to mechanical energy -> generator converts mechanical energy to electrical energy -> electricity is stored.
What is the effect of wind turbines on bird and bat populations?
Can cause injury or death due to collisions with turbine blades.
How does wind energy impact greenhouse gas emissions?
Reduces greenhouse gas emissions by displacing fossil fuel-based electricity generation.
What are the visual impacts of wind farms?
Wind farms can alter the landscape, leading to visual pollution concerns.
What are the effects of wind turbine noise?
Wind turbines can produce noise pollution, disturbing nearby residents and wildlife.
How does intermittency affect grid stability?
Variable wind energy output can challenge grid stability, requiring backup power sources or energy storage solutions.
What is the effect of wind energy on air pollution?
Reduces air pollution by decreasing the need for fossil fuel combustion.
How does wind energy impact local economies?
Creates jobs, stimulates investment, and generates revenue for local communities.
What is the impact of wind farms on land use?
Requires large areas of land, but land can often be used for other purposes like agriculture.
What are the effects of wind energy on energy independence?
Increases energy independence by diversifying energy sources and reducing reliance on imported fuels.
How does wind energy affect the cost of electricity?
Can lower electricity costs over time as wind energy becomes more cost-competitive with fossil fuels.
Explain energy conversion in wind turbines.
Kinetic energy of wind -> mechanical energy (turbine rotation) -> electrical energy (generator).
Why are wind turbines mounted on tall towers?
To access stronger, more consistent winds at higher altitudes.
Why is wind energy considered a renewable resource?
Wind is naturally replenished and virtually inexhaustible.
What is the role of a generator in a wind turbine?
Converts mechanical energy from the rotating turbine blades into electrical energy.
What is the environmental significance of wind energy?
Reduces reliance on fossil fuels, lowering greenhouse gas emissions and air pollution.
How does wind energy contribute to job creation?
Creates jobs in manufacturing, installation, maintenance, and related industries.
Explain the concept of intermittency in wind energy.
Wind is not always constant, leading to variable electricity output and grid management challenges.
What are the main types of wind turbines?
Horizontal Axis Wind Turbines (HAWT) and Vertical Axis Wind Turbines (VAWT).
How is electricity from wind turbines stored?
Using electrical batteries, compressed air storage, hydrogen fuel cells, or pumped storage.
Why is wind energy becoming more cost-competitive?
Technological advancements and economies of scale are driving down the cost of wind energy.