Lesson 37: Geothermal Power Plants

Question 1

This is the Earth’s internal heat which is generated from radioactive decay and continual heat loss from Earth’s formation.

Answer 1

Geothermal Ennergy

Question 2

The difference in temperature between the core of Earth and its surface.

Answer 2

Geothermal Gradient

Question 3

These things use steam which is produced from reservoirs of hot water found several miles below the Earth’s surface.

Answer 3

Geothermal Power Plants

Question 4

These draw from underground resources of steam.

Answer 4

Dry Steam Power Plants

Question 5

This uses hydrothermal fluidss that are already mostly steam, which is a relatively rare natural occurrence.

Answer 5

Dry Steam Power Plants

Question 6

This uses geothermal reservoirs of water with temperature greater than 360 degrees F.

Answer 6

Flash Steam Power Plants

Question 7

This operates on water at lower temperatures of about 225°-360°F (107°-182°C).

Answer 7

Binary Cycle Power Plants

Question 8

This is usually an organic compound with a low boiling point which is vaporized in a heat exchanger and is used to turn a turbine.

Answer 8

Working Fluid