How an iceberg travels across the sea is sometimes unpredictable. When an iceberg breaks off from a glacier, it can \_46\_ for thousands of miles, traveling freely across the open ocean. But last week, an iceberg's journey was interrupted when it got stuck on a \_47\_ part of the seafloor along Greenland's western coast. In other words, the iceberg was grounded—and it had \_48\_ itself right beside the small island village of Innaarsuit. Such grounded icebergs are actually pretty common, says Fiamma Straneo, who has traveled about 20 times to Greenland's ice sheet for her work at the Scripps Institution of Oceanography at UC San Diego. What's unique about the iceberg by Innaarsuit is both its size and its \_49\_ to the village. A grounded iceberg experiences ocean water pushing at it in one direction and the seafloor pushing in another—a \_50\_ that makes it easy for limbs to break off with a splash that can rock boats or flood coasts. The iceberg might even do an entire somersault in the water. Across the world, from the Canadian Arctic to Patagonia in Argentina, that shedding is both a tourist attraction and an issue of concern. The larger the iceberg, the larger the waves it causes if it breaks apart.