Geothermal Energy Concepts

The video introduces geothermal energy, a renewable energy source derived from the Earth's heat. It explains the origins of the term 'geothermal' and highlights its global usage, with the US as a leader. The video details two main technologies: geothermal power plants and heat pumps. It describes three types of power plants—dry steam, flash steam, and binary cycle—and explains how they generate electricity. Additionally, it covers geothermal heat pumps, which use the Earth's stable underground temperature to heat and cool buildings. The video concludes with a comparison of closed and open loop systems.

What is the primary source of geothermal energy?

• Ocean currents

• Sunlight

• Wind

• Heat within the Earth

Which country is currently the global leader in geothermal power?

• United States

• Kenya

• Indonesia

• Turkey

What is the main function of a geothermal power plant?

• To harness solar power

• To convert ocean waves into energy

• To generate wind energy

• To produce electricity from Earth's heat

Which type of geothermal power plant was first used in Italy in 1904?

• Binary cycle

• Flash steam

• Hydroelectric

• Dry steam

In a binary cycle power plant, what is used to turn the turbine?

• Direct steam from the Earth

• Secondary liquid vapor

• Solar panels

• Wind turbines

What is a characteristic of the secondary liquid used in binary cycle power plants?

• Solid at room temperature

• Non-conductive

• Low boiling point

• High boiling point

What happens to the pressure of water as it flows upward in a flash steam power plant?

• It increases

• It remains constant

• It decreases

• It fluctuates

What is the main advantage of using a geothermal heat pump in homes?

• It uses solar energy

• It provides constant temperature regulation

• It relies on wind power

• It is powered by fossil fuels

How does a geothermal heat pump work during the summer?

• It heats the building

• It cools the building by transferring heat underground

• It generates electricity

• It uses wind to cool the building

In an open loop geothermal system, what is the main difference compared to a closed loop system?

• It relies on solar panels

• It uses water from one reservoir and discharges it to another

• It circulates the same water continuously

• It uses air instead of water