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.
Normally, we don't have large magnitude quakes this deep, said Alaska Earthquake Information Center seismologist Natalia Ruppert, noting that the tremor was felt strongly in Fairbanks and as far south as Kodiak.CNN) -- Alaskans were shaken up -- but not, it seems, rattled -- by a 6.2-magnitude earthquake and more than a dozen aftershocks that struck in the state Thursday. The U.S. Geological Survey noted that the biggest tremor struck at 9:51 a.m. local time (1:51 p.m. ET), centered some 80 miles northwest of Anchorage.