1		2		3									4
	5													6
					7							8
	9									10
					11
			12
	13
							14
15
								16
					17
											18
		19
										20
			21

Across 2. ____ steam plants take high-pressure hot water from deep inside the Earth and convert it to steam to drive the generator turbines. When the steam cools, it condenses to water and is injected back into the ground to be used over and over again. 9. very hot melted rock 11. Only five States have geothermal power plants: California, Hawaii, Montana, Utah and ____ 13. The Earth's crust is broken into pieces called ______. 14. "The Geysers" dry steam reservoir in northern ______ is the largest known dry steam field in the world and has been producing electricity since 1960. 17. The crust is the ________ layer of the Earth, the land that forms the continents and ocean floors. 18. what is the greek for heat? 19. Most geothermal reservoirs are deep underground with no ______ clues showing above ground 20. Today, many hot springs are still used for 21. They transfer heat from the ground (or water) into buildings in winter and _____ the process in the summer.

Down 1. Most of the geothermal activity in the world occurs in an area called the ____ of Fire 3. The most _____ geothermal resources are usually found along major plate boundaries where earthquakes and volcanoes are concentrated. 4. heat from within the earth 5. Geothermal heat _____ use stable ground or water temperatures near the Earth's surface to control building temperatures above ground. 6. According to the U.S. Environmental Protection Agency (EPA), geothermal heat pumps are the most energy _____, environmentally clean, and cost effective systems for temperature control 7. The ______ surrounds the core and is about 1,800 miles thick. It is made up of magma and rock. 8. Naturally occurring large areas of hydrothermal resources are called geothermal _______. 10. the Ring of Fire encircles the _____ Ocean 12. geo is greek for 15. The temperature of the ____ and water gets hotter and hotter as you go deeper underground. 16. geothermal energy sometimes finds its way to the surface in the form of: