Wind, Solar, and Geothermal Flashcards
Energy (13 cards)
What is the primary function of wind turbines?
To produce electricity using a generator powered by rotating blades
Wind turbines convert kinetic energy from wind into electrical energy.
What is a significant environmental impact of wind turbines?
They spoil the view and can be noisy for nearby residents
The visual impact and noise pollution are common concerns associated with wind farms.
How many wind turbines are needed to replace one coal-fired power station?
About 1500 wind turbines
This quantity of turbines covers a large area, affecting scenery.
What is the average electricity production rate of wind turbines?
70-85% of the time
This indicates the reliability of wind energy generation.
What are the initial and ongoing costs associated with wind turbines?
High initial costs, but no fuel costs and minimal running costs
The absence of fuel costs makes wind energy economically attractive in the long run.
What happens to the landscape if wind turbines are removed?
There is no permanent damage; the view returns to normal
This highlights the reversible nature of wind turbine installations.
What do solar cells generate electricity from?
Sunlight
Solar cells convert solar energy directly into electrical energy.
Where are solar cells often used?
In remote locations, electric road signs, and satellites
They are particularly useful in areas with limited energy options.
What is a major drawback of solar power?
It cannot increase power output during extra demand
Solar energy generation is limited to daylight hours and cannot be ramped up on demand.
What are the initial costs associated with solar cells?
High initial costs, but subsequent energy is free and running costs are minimal
This makes solar power an economical choice over time.
What is geothermal power derived from?
Underground thermal energy stores, particularly from radioactive decay
The energy source includes elements like uranium found deep within the Earth.
What are the main advantages of geothermal power?
Reliable energy source with very little environmental damage
Geothermal energy is considered a sustainable resource.
What are the limitations of geothermal power?
Few suitable locations for power plants and high construction costs
These factors can hinder the widespread adoption of geothermal energy.
