Which of the following best describes how geysers erupt?
A) Water below the water table slowly boils in a vertical crack or natural conduit, causing a plume of condensed water vapor to rise above the vent.
B) Water slowly boils in a network of vertical cracks above the water table, sending up a plume of steam and hot water.
C) Water suddenly boils in disconnected voids and cracks above the water table, causing the aquifer to explosively fragment.
D) 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.
D
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The summer monsoon in eastern and southern Asia is characterized by dry weather and winds
blowing from land to sea. a. true b. false
Columnar jointing in lava flows occurs due to ____
A)pyroclastic welding B)basaltic crystal formation C)contact of the lava flow with sea water D)the expansion of lava flow materials E)cooling and contracting of lava flows
____ caused a major tsunami wave in Alaskan coastal fjords
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