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 Mw 7 earthquake occurred on December 6, 1999 at 2:12 pm AKST in the Kodiak Island region of Alaska. The earthquake was located at 57.51N and 154.67W at 45.8 km depth. Aftershocks of Ml 5.4 and Ml 6.4 followed the main shock by ten minutes and one hour, respectively.