8.Geothermal power. It’s hot

Not far below the Earth’s ___________ there is a great________boiler. The boiler or _______ is the planet, the heat source is the ________, and the fuel is ________ in the sand-stone layer that the magma changes from _______ into superheated dry _____. Dry steam in the subterranean cauldron is collected in _____ to drive _____ to create ________. This clean free energy ______ in the form of steam comes up to steam _____ and passes through ducts to a steam ______ designed to handle gas at _____ degrees Fahrenheit at ____ pounds per square inch _______. The steam turbine powers electrical _______. Spent steam passes through a _______ where non-condensable ______ like ________ sulfide, arrive at a few scrubbers and are ______. The surface condenser also cools the steam and turns it _____ into water. The water then goes to ______ tower where about ____% is evaporated as part of ________ process and _____ % is injected back into the steam ________. Other gases that are not condensable are _______, nitrogen ______ monoxide, carbon ______, ammonia, _____, arsenic and radon. Theses gases are sent to _______ and cleaned to the point when they can be _____ reinjected into the Earth. The mercury is taken to a _______ hazardous waste ____ facility and the ____ is collected and sold for use and making ______ for soil ______ and to fight mold on _____ leaves. In the future, ______ may be stored for use in _____cells. Geothermal power _____ are highly ______ and can operate ____ hours a day more than ___% of the time. ______ energy offers a large source of secure _______ energy. In ________, sales of geothermal ________ enhance US trade and ________ the environment.