Geothermal Energy Concepts and Concerns

Geothermal energy harnesses the Earth's internal heat, generated from radioactive decay and heat loss from its formation. Wells are drilled into the Earth's crust to extract heat, often using water and steam. This heat can directly warm buildings or generate electricity in power plants. Geothermal energy is reliable but faces challenges like CO2 emissions, potential ground temperature reduction, and high initial costs. Despite being a minor player in the global energy mix, its consistent power generation makes it valuable.

What is the primary source of geothermal energy?

• Solar radiation

• Wind currents

• Ocean tides

• Radioactive decay of minerals

At what depth are geothermal wells typically drilled?

• 3 to 10 kilometers

• 20 to 30 kilometers

• 10 to 20 kilometers

• 1 to 2 kilometers

How is geothermal heat commonly used to heat buildings?

• By using solar panels

• By directly circulating hot water or using a heat exchanger

• By using wind turbines

• By burning fossil fuels

What is produced in a geothermal power plant to generate electricity?

• Natural gas

• Steam

• Hot air

• Cold water

Which regions are most suitable for geothermal development?

• Polar regions

• Volcanically and tectonically active regions

• Flat plains

• Desert regions

What is a key advantage of geothermal energy?

• It is unreliable

• It is intermittent

• It provides consistent power generation

• It is the cheapest energy source

What is a potential environmental concern with geothermal energy?

• Release of CO2 and hydrogen sulfide

• High water consumption

• Depletion of fossil fuels

• Deforestation

What can happen if geothermal heat is drawn irresponsibly?

• Flooding of the area

• Increase in seismic activity

• Lowering of ground temperature below the surface

• Increase in surface temperature

Why are the upfront costs for geothermal energy production high?

• Due to the cost of fossil fuels

• Because of the need for seismic sensing and drilling confirmation testing

• Because of the high cost of solar panels

• Due to the cost of wind turbines

What is necessary to ensure a new geothermal plant meets desired production?

• Installing more solar panels

• Using more fossil fuels

• Conducting preliminary investigations

• Building more wind turbines