Q. This completely unpredictable geyser is the largest geyser in the world. It throws a million gallons of water up to 300 feet in the air. Name it.
A. Steamboat Geyser in Norris Geyser Basin.
No one can predict when it's going to erupt, as it works on an odd schedule, ranging from four days to fifty years. It erupted numerous times in 1911, and then was dormant until the 1960s, when it went off 90 times between 1961 and 1969. Then it was dormant for nine years before erupting occasionally, but in 1982, it went off 23 times. Since then, it's erupted a few times unpredictably. As of publication, the last time it erupted was on July 31, 2013 after eight years.
Q. What did they name this odd feature of Yellowstone Lake's Underwater Geyser?
Once every 25 minutes, the water roils when this submerged geyser erupts about 20 feet below the surface. Researchers sent an underwater video camera to see what was happening. They found that cutthroat trout regularly patrol the area, feeding on clouds of crustaceans and aquatic insects stirred up by the eruptions.