Jumat, 19 Oktober 2012

My Explanation Text


How a Geyser Forms


A geyser field is usually located in an area where there has been recent volcanic activity.There can be hundreds of geysers in a geyser field.Their located depend on the system of channels underground.(General Statement)
Cold surface water seeps underground.It flows through cracks in nonporous rock (rock that does not soak up water) and collects in channels of porous rock (rock that soak up water).The water is heated by hot rock and it begins to expand and boil.Water at the top boils off or spills over.This reduces the pressure and causes deeper water to boil much more violently,creating jets of steam and fountains of hot water. (A Sequenced  Explanation)

Tidak ada komentar:

Posting Komentar