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Geysers Erupt > Geyser
Ingredients > Water > Faithful
Water
Water
FAITHFUL WATERS
• Old Faithful Geyser expels 3,700 to 8,400 gallons of water
each time it erupts.
• During eruptions, the water in Old Faithful shoots from
106 to more than 180 feet (32-55 m) high.
• Temperature and pressure measurements indicate that during
the first 20 or 30 seconds of an eruption, steam and boiling water
shoot through the narrowest part of Old Faithful’s vent at
the speed of sound.
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