Geothermal Energy Resources Quiz
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Questions and Answers

What is a geothermal reservoir?

  • A grid of power lines connecting energy sources.
  • An underground source of fresh water.
  • A type of volcanic island.
  • A location with hot springs or underground heat sources. (correct)

What are the two forms of geothermal reservoirs mentioned?

  • Heating systems and cooling systems.
  • Natural geysers and tranquil lakes.
  • Oceanic vents and mountain springs.
  • Surface hot springs and underground reservoirs. (correct)

How are underground geothermal reservoirs accessed?

  • By digging trenches.
  • By creating geothermal farms.
  • By drilling wells. (correct)
  • By constructing a dam.

Which of the following statements is true regarding geothermal reservoirs?

<p>They can be found both on the surface and underground. (A)</p> Signup and view all the answers

Which of the following is least likely to be a characteristic of geothermal reservoirs?

<p>They consistently produce freshwater. (C)</p> Signup and view all the answers

What is a common misconception about geothermal resources?

<p>Geothermal resources are only found in specific locations. (D)</p> Signup and view all the answers

Which of the following statements about geothermal heat is true?

<p>Geothermal energy can be harnessed from all parts of the Earth. (B)</p> Signup and view all the answers

Why are areas with hot springs often prioritized for geothermal resource use?

<p>They are more obvious and easier to identify. (A)</p> Signup and view all the answers

Which of the following best describes geothermal resources?

<p>They are continuously available from the Earth's heat. (B)</p> Signup and view all the answers

What factors contribute to the availability of geothermal resources?

<p>Surface manifestations and underground heat distribution. (B)</p> Signup and view all the answers

What characteristic of the energy source is highlighted in the content?

<p>It is an exceptionally constant source of energy. (A)</p> Signup and view all the answers

Why is this energy source considered advantageous compared to others?

<p>It is available all year long without reliance on external weather conditions. (A)</p> Signup and view all the answers

Which of the following is NOT a characteristic of the energy source mentioned?

<p>Dependent on wind speeds. (B)</p> Signup and view all the answers

Which type of ground coupled geothermal heat pump system is most commonly used for residential areas?

<p>Closed loop horizontal systems (A)</p> Signup and view all the answers

How does the reliability of this energy source compare to others like solar or wind energy?

<p>More reliable as it functions without external weather dependency. (A)</p> Signup and view all the answers

In what way is the energy source described as 'exceptional'?

<p>It maintains constant availability throughout all seasons. (C)</p> Signup and view all the answers

For larger commercial buildings, which type of geothermal heat pump system is generally preferred?

<p>Closed loop vertical systems (C)</p> Signup and view all the answers

What is the primary characteristic of closed loop horizontal systems?

<p>They are cost-effective for residential use. (C)</p> Signup and view all the answers

Which of the following statements about ground coupled geothermal heat pumps is accurate?

<p>Vertical systems are more common in larger facilities. (A)</p> Signup and view all the answers

Which factor makes closed loop horizontal systems more viable for residential areas?

<p>Their lowered installation costs. (D)</p> Signup and view all the answers

What is the primary source of heat for geothermal energy?

<p>Magma injection (D)</p> Signup and view all the answers

What effect does heated underground water have on the Earth's surface?

<p>It leads to geothermal heating (A)</p> Signup and view all the answers

How does geothermal energy rise to the surface?

<p>By convection currents (B)</p> Signup and view all the answers

Where is magma typically found in relation to geothermal energy production?

<p>At tectonic plate boundaries (D)</p> Signup and view all the answers

What role does underground water play in geothermal energy systems?

<p>It generates steam for power (D)</p> Signup and view all the answers

What is essential for the installation of a geothermal system in relation to a house?

<p>A piece of land next to the house (B)</p> Signup and view all the answers

Why is the location of land important for geothermal systems?

<p>To facilitate easy installation and access (D)</p> Signup and view all the answers

Which of the following does NOT relate to the land requirements for geothermal systems?

<p>Nearby power lines (C)</p> Signup and view all the answers

In planning for a geothermal system, what characteristic of the land should be primarily considered?

<p>The land's proximity to the home (D)</p> Signup and view all the answers

When considering land for a geothermal system, which of the following is a common misconception?

<p>Any nearby land can be utilized regardless of proximity (C)</p> Signup and view all the answers

Flashcards

Magma

Molten rock found beneath the Earth's surface.

Magma Injection

The process of injecting magma into deep cracks in the Earth's crust.

Geothermal Energy

Heat generated from the Earth's interior, often due to the presence of magma.

Geothermal Water

Water that is heated by geothermal energy.

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Geothermal Upwelling

The process of geothermal water rising to the surface due to pressure and heat.

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Geothermal Reservoirs

Locations where hot water or steam from the Earth's interior is stored.

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Hot Springs

Natural openings in the Earth's surface where hot water flows.

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Underground Geothermal Reservoirs

Geothermal reservoirs that are located beneath the surface.

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Geothermal Wells

Holes drilled into the Earth to reach underground geothermal reservoirs.

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Geothermal Extraction

The process of extracting hot water or steam from geothermal reservoirs.

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What is geothermal energy?

Geothermal energy is a form of energy that is generated by the heat of the Earth's interior.

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Where are geothermal resources found?

Geothermal resources are found everywhere on Earth, not just in obvious places like hot springs.

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Why are hot springs often used for geothermal resources?

Hot springs are often the first places where people use geothermal resources because the heat is more obvious and accessible.

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How is geothermal energy used?

The heat from the Earth's core is used to generate energy, similar to using the sun's energy for solar power.

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Why is geothermal energy considered clean and renewable?

Geothermal energy is a clean and renewable source of energy, as it uses the natural heat of the Earth.

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Why is geothermal energy a constant source?

Geothermal energy doesn't rely on the wind or sun, so it is available 24/7, 365 days a year.

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Is geothermal energy renewable?

Geothermal energy is considered a renewable source because it replenishes itself naturally.

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What can geothermal energy be used for?

Geothermal energy can be used to generate electricity.

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What else can geothermal energy be used for?

Geothermal energy can also be used to heat homes and businesses.

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Land Requirement for Geothermal System

A geothermal system requires land adjacent to the house for installation.

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How are geothermal systems installed?

Geothermal systems are designed to utilize heat from the Earth's interior, often accessed through wells.

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What does a geothermal system do?

Geothermal systems use the Earth's natural heat to provide energy, typically for heating and cooling.

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Installation Process of Geothermal Systems

The installation of a geothermal system often requires excavation and drilling to access underground heat sources.

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Environmental Benefits of Geothermal Systems

Geothermal systems offer environmentally friendly energy solutions by utilizing a renewable and clean source of energy.

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Horizontal Closed-Loop GHP

A closed-loop geothermal heat pump (GHP) system that uses horizontal pipes buried in the ground for heat exchange.

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Vertical Closed-Loop GHP

A closed-loop geothermal heat pump (GHP) system that uses vertical pipes drilled deep into the ground for heat exchange.

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Best GHP for Homes

The most cost-effective type of closed-loop GHP system for residential homes, utilizing horizontal pipes.

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Best GHP for Commercial Buildings

The preferred type of closed-loop GHP system for larger commercial buildings, utilizing vertical pipes for greater heat exchange capacity.

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Pond Closed-Loop GHP

A type of closed-loop GHP system that utilizes a body of water, like a pond, for heat exchange.

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Study Notes

Geothermal Energy

  • Geothermal energy is defined as heat from the Earth's internal heat, beneath the Earth's surface.
  • Heat from the Earth, or geothermal energy (Geo - Earth + thermal - heat), is obtained by drilling water or steam wells similar to drilling for oil.
  • Earth's structure: The Earth consists of the crust, mantle, outer core, and inner core.
  • The average temperature gradient in the Earth's interior is about 20-30°C per 1 km depth.
  • Temperature gradient varies significantly in areas of high structural activity.
  • Examples of geothermal gradients: 10-20°C/km in shield crust, 30-60°C/km in platform areas, >100°C/km in volcanic areas.
  • Geothermal energy is a renewable resource because the Earth's internal heat is continuously regenerated by the decay of radioactive elements.
  • Geothermal energy is the heat from beneath the Earth's surface, found in rocks and fluids.
  • Temperatures range around 5500°C near the Earth's core.
  • The Earth's crust acts as an insulator, trapping heat inside.
  • Heat from the core is transferred to the surface via different processes.
  • Direct heat conduction is one way, but doesn’t produce much heat at the surface. Magma rising also produces significant heat at the surface at active volcanoes.
  • Geothermal reservoirs: Hot springs, underground reserves located on or below the surface, which heat up underground water.
  • Geothermal energy can be used to produce electricity via geothermal power plants.
  • Geothermal wells are drilled 3-10 km deep, extracted from the Earth’s crust using various methods (often water and steam).
  • Hot water from reservoirs can be directly channeled for home and building heating.

Advantages of Geothermal Energy

  • Environmentally friendly: No emissions from burning fossil fuels.
  • Significant cost savings (up to 80%) compared to conventional energy usage.
  • Reliable and constant source of energy regardless of weather conditions, making it consistently available year-round.

Disadvantages of Geothermal Energy

  • Greenhouse gas emissions (like hydrogen sulfide, carbon dioxide, methane, and ammonia).
  • Potential for geothermal source depletion over time if the cooling rate in certain places becomes too significant.
  • High initial investment costs for individual households for drilling and installation.
  • Land requirements for geothermal systems, making it less suitable for areas with limited land.

Types of Geothermal Power Production Systems

  • Dry Steam: Uses high-temperature steam directly to power turbines.
  • Flash Steam: Uses high-pressure hot water that is converted to steam upon extraction to power turbines.
  • Binary Cycle: Uses a secondary working fluid with a lower boiling point to generate electricity from moderate-temperature water (often used in areas where temperatures are lower).
  • Geothermal Heat Pumps (GHP): Transfer heat between the Earth and buildings extracting heat during the winter and releasing heat during summer. The Earth's subsurface is a thermally stable temperature; it maintains a more constant temperature range than atmospheric temperatures on earth's surface.

Geothermal Resources in Jordan

  • Geothermal resources are connected with natural springs, primarily in sandstone rocks.
  • Other examples of geothermal features are boiling or mud pools.
  • Geothermal resources are also found in the Dead Sea Rift, primarily along the east side of the rift valley.
  • Temperatures for most springs generally don't exceed 45°C. However, notable areas such as Zara, Zarqa Ma'in, and others can reach up to 63°C.
  • Thermal springs have provided bathing and irrigation for years and continue to be useful resources.

Field Development Costs

  • The majority of the cost of geothermal power plants is related to well drilling equipment.

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Geothermal Energy Lecture - Dec 14

Description

Test your knowledge on geothermal reservoirs and their characteristics with this quiz. Explore the types of geothermal reservoirs, how they are accessed, and the advantages of geothermal energy compared to other sources. Discover common misconceptions and the significance of hot spring areas in geothermal resource utilization.

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