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.
Southern Alaska is prone to earthquakes, according to USGS. On March 27, 1964, the area experienced a 9.2-magnitude quake, the most powerful earthquake recorded in the United States and the second-most powerful earthquake recorded in world history. Perhaps the frequency of seismic activity explains this great response from an Anchorage resident: