?What is a Geyser

geyser in New Zealand

                   A geyser is a vent in Earth's surface that periodically ejects a column of hot water and steam. Even a small geyser is an amazing phenomenon; however some geysers have eruptions that blast thousands of gallons of boiling hot water up to a few hundred feet in the air.

Conditions Required for Geysers

1) hot rocks below

2) an ample groundwater source

3) a subsurface water reservoir

4) fissures to deliver water to the surface

Most of the world's geysers occur in just five countries: 1) the United States, 2) Russia, 3) Chile, 4) New Zealand and 5) Iceland. All of these locations are where there is geologically recent volcanic activity and a source of hot rock below. a geyser erupts when super-heated groundwater, confined at depth, becomes hot enough to blast its way to the surface.the source