Podcast
Questions and Answers
What is geothermal energy?
What is geothermal energy?
- Heat energy from the Earth's interior (correct)
- Energy generated from wind turbines
- Energy derived from solar panels
- Energy produced by burning fossil fuels
What is the first step in the process of generating electricity from geothermal energy?
What is the first step in the process of generating electricity from geothermal energy?
- Turning steam into electricity via a turbine
- Pumping cooled water back into the earth
- Drilling wells to access steam or hot water (correct)
- Cooling the steam
How does steam contribute to electricity production in geothermal power plants?
How does steam contribute to electricity production in geothermal power plants?
- Steam cools down other fluids in the system.
- Steam spins a turbine connected to a generator. (correct)
- Steam is used to heat water.
- Steam directly generates electrical current.
What is one significant advantage of using geothermal energy?
What is one significant advantage of using geothermal energy?
Which of the following is a common disadvantage of geothermal energy?
Which of the following is a common disadvantage of geothermal energy?
What happens in the cooling tower during geothermal energy production?
What happens in the cooling tower during geothermal energy production?
In which location is geothermal energy most commonly harnessed?
In which location is geothermal energy most commonly harnessed?
What role does pressure drop play in geothermal energy production?
What role does pressure drop play in geothermal energy production?
What is the primary way that geothermal energy generates electricity?
What is the primary way that geothermal energy generates electricity?
What percentage of the Philippines' total power generation comes from geothermal energy?
What percentage of the Philippines' total power generation comes from geothermal energy?
Which statement accurately describes the source of geothermal energy?
Which statement accurately describes the source of geothermal energy?
What is one of the disadvantages of using geothermal energy?
What is one of the disadvantages of using geothermal energy?
Where does the heat used in geothermal energy production primarily come from?
Where does the heat used in geothermal energy production primarily come from?
Which country ranks second in the world for geothermal energy production?
Which country ranks second in the world for geothermal energy production?
How does the cost of electricity production from geothermal energy compare to other sources?
How does the cost of electricity production from geothermal energy compare to other sources?
What process occurs when heat from within the Earth warms water for geothermal energy?
What process occurs when heat from within the Earth warms water for geothermal energy?
Flashcards
What is geothermal energy?
What is geothermal energy?
Geothermal energy is a renewable energy source that harnesses the heat within the Earth's core. It is generated from the molten rock beneath the Earth's surface.
How does geothermal energy produce electricity?
How does geothermal energy produce electricity?
Geothermal power plants utilize the steam generated by the Earth's heat to create electricity. This process involves drilling wells to access hot water or steam, which is used to spin turbines connected to generators.
Where are geothermal plants located?
Where are geothermal plants located?
Geothermal power plants are located in areas with high geothermal activity. This means they are found near volcanoes, hot springs, or areas where the Earth's crust is thin.
What are the advantages of geothermal energy?
What are the advantages of geothermal energy?
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What are the disadvantages of geothermal energy?
What are the disadvantages of geothermal energy?
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How is geothermal energy created?
How is geothermal energy created?
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How do geothermal plants produce electricity?
How do geothermal plants produce electricity?
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Why is geothermal energy considered renewable?
Why is geothermal energy considered renewable?
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Where does the Philippines rank in geothermal energy production?
Where does the Philippines rank in geothermal energy production?
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What are the economic benefits of geothermal energy?
What are the economic benefits of geothermal energy?
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What is the impact of geothermal energy on the environment?
What is the impact of geothermal energy on the environment?
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Are there any drawbacks to using geothermal energy?
Are there any drawbacks to using geothermal energy?
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Study Notes
Geothermal Energy
- Geothermal energy is derived from the heat stored within the Earth, originating from melted magma
- It can be harnessed to generate electricity using steam or hot water
- Geothermal power plants are located in areas with high geothermal activity, near volcanoes, geysers, or hot springs
- In the Philippines, geothermal plants are found in areas such as Tiwi, Albay, and Mak-Ban, Laguna
Geothermal Energy Generation
- Wells are drilled deep into the Earth to extract steam or hot water
- The steam or hot water is brought to the surface
- The pressure drop at the surface converts the water to steam
- The steam spins a turbine connected to a generator, which produces electricity
- The cooled water is re-injected back into the Earth to maintain the cycle
Geothermal Energy Advantages
- Renewable energy source. The water is replenished by rainfall. The heat is continuously produced by the Earth
- Lower carbon footprint compared to fossil fuels. Minimal pollution associated
Geothermal Energy Disadvantages
- High initial cost of setting up geothermal plants. High cost of production process and facilities.
- Potential environmental hazards associated with the release of gases. Possible volcanic eruptions near plants and their impact
Geothermal Power Plants in Philippines
- Examples of geothermal plants mentioned are Tiwi Geothermal Plant in Tiwi, Albay and Mak-Ban (Makiling-Banahaw), located in Calauan, Laguna
- The Philippines ranks second in the world in geothermal energy production (14.4% of national power generation) – making it cheaper than national counterparts using other sources.
Key Terms
- Geo - Earth
- Therme - Heat
- Generator - Device that converts mechanical energy into electrical energy
- Turbine - Device that converts fluid energy (steam, water) into mechanical energy that drives a generator
- Magma - Molten rock beneath the Earth's surface.
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