Geothermal Energy Systems Overview

Geothermal energy harnesses the Earth's heat for electricity, heating, and cooling. It can be accessed at plate boundaries, through hydraulic fracturing, or via heat pumps. While some methods are experimental, geothermal heat pumps are widely applicable and efficient.

What does the term 'geothermal' refer to?

• The movement of tectonic plates

• The study of rocks

• The heat from the sun

• The heat from the earth

Which of the following is a characteristic of geothermal energy found at plate boundaries?

• It is widely available everywhere

• It is the most powerful but rarest type

• It is the cheapest form of energy

• It does not require drilling

Where can the first type of geothermal energy be typically found?

• In the ocean

• In urban areas

• At geologic plate boundaries and hot spots

• In deserts

What is a key feature of the second type of geothermal energy involving vertical wells?

• It is widely used and inexpensive

• It involves drilling and hydraulic fracturing

• It does not require water

• It is only used for cooling

What is the current status of the second type of geothermal energy technology?

• It is fully developed and widely used

• It is experimental and costly

• It is only used in Europe

• It is banned in most countries

How does the third type of geothermal energy maintain a building's temperature?

• By using wind turbines

• By burning fossil fuels

• By using solar panels

• By circulating water through a closed loop of pipe

What is a benefit of the third type of geothermal energy system?

• It requires no maintenance

• It is cheaper to operate and longer lasting

• It produces more emissions

• It is the cheapest to install

What is the temperature range just below the surface in the U.S. for the third type of geothermal energy?

• 80 to 90 degrees

• 30 to 40 degrees

• 50 to 60 degrees

• 60 to 70 degrees

What is a disadvantage of installing the third type of geothermal energy system?

• It is less efficient than conventional systems

• It is twice as expensive to install as conventional systems

• It is only suitable for large buildings

• It requires constant maintenance

Which type of geothermal energy is most likely to be widely adopted?

• The type that uses solar energy

• The type that can be done almost anywhere

• The type involving vertical wells

• The type found at plate boundaries