1 Water molecules have a. 2  because the electrons in each covalent bond between the oxygen and each hydrogen are unequally shared-the electrons are closer to the oxygen. 3  This means that each water molecule has a partial negative charge on the oxygen and partial positive charges on the hydrogens.
The 7.9 magnitude quake, which rattled the area Nov. 3, 2002, has been the subject of research and fascination since. Scientific studies of the quake, whose epicenter was about 90 miles south of Fairbanks, spawned new national standards for building bridges and are providing a deeper understanding of how earthquakes affect frozen ground.
A magnitude-6.2 earthquake shook parts of southern Alaska on Thursday morning, but its depth suggested the impact on the small towns nearby could be modest. The deep quake, which hit at 9:51 a.m. AT (1:51 p.m. ET) and shook for 10 seconds, was centered in the Cook Inlet region, 60 miles west northwest of Willow and 81 miles northwest of Anchorage, the Alaska Earthquake Information Center reported. It was felt in Fairbanks, about 235 miles away, and as far south as Kodiak, Valdez and Seward, more than 300 miles away.