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Chapter 10

Concept #6 Quiz

Concept #6 Quiz
Choose the best possible answer to the following questions about Key Concept 6 "Groundwater and "geothermal energy"."

This activity contains 3 questions.

	If the deposits associated with a spring are calcium carbonate (travertine), like Mammoth Hot Springs in Yellowstone National Park, what is the rock below the spring, and why?   limestone – it is composed of calcite marble – it is composed of feldspar limestone – it is composed of quartz shale – it is composed of clay

	Which of the following best describes how geysers erupt?   Water below the water table boils in a vertical crack or natural conduit, causing a plume of condensed water vapor to rise above the vent. Water slowly boils in a network of vertical cracks above the water table, sending up a plume of steam and hot water. Water suddenly boils in disconnected voids and cracks above the water table, causing the aquifer to explosively fragment. With a slight reduction in pressure, water in a saturated, natural conduit suddenly boils, sending a plume of steam and hot water into the air above the vent.

	Which of the following is NOT a geological factor that favors a geothermal reservior of commercial value?   Severely fractured igneous rocks that allow fast flow of groundwater. A cap of low permeability rocks that inhibits the flow of water and heat to the surface. A potent source of heat. Large and porous reservoirs with channels connected to the hear source.

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