Shake Rattle and Roll! The Science of Earthquakesby Kate Bannan 25 Aug, 2011 in Science Communications
A rare, powerful 5.8-magnitude earthquake shook the East Coast United States on August 23. Damage was light, but millions of people were surprised and unnerved by the event. The earthquake occurred near Mineral, Virginia, about 100 miles southwest of Washington, DC. It was a shallow earthquake, and shaking was recorded all along the Appalachians, from Georgia to New England. There have been several aftershocks and more are expected. An earthquake is the result of a sudden release of energy in the Earth'scrustthat creates seismic waves. It is estimated that around 500,000 earthquakes occur each year, detectable with current instrumentation. About 100,000 of these can be felt. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. Earthquakes may last only a few seconds or may continue for up to several minutes. They can occur at any time of the day or night and at any time of the year. Minor earthquakes occur nearly constantly around the world in places like Californiaand Alaskain the United States, but earthquakes can occur almost anywhere. Scientists have learned a lot about earthquakes, but there is still much that we don't know, like how to accurately forecast them. Find... Related Topics: earthquake, USGS, WorldWideScience.org (WWS) Read more... |
OSTI CELEBRATES SCIENCE AND ENGINEERING – COME JOIN US AT THE USA SCIENCE AND ENGINEERING FESTIVAL MALL EXPOby Kate Bannan 19 Oct, 2010 in Science Communications
You need information about the environment, or physics, or chemistry, or the earth and don't know where to go. You want the information quickly, and from an authoritative source. No problem.  Stop by the Department of Energy’s (DOE) Office of Science exhibit to see and use the new search tool, ScienceEducation.gov ScienceEducation.gov was launched in Beta Version to provide stakeholders and the education community an opportunity for feedback. The site is publicly accessible and makes federal science, technology, engineering and mathematics (STEM) education resources accessible and transparent via a single, integrated portal for one-stop searching by teachers, students, education professionals and parents. Using open source software in a web 2.0 platform that invites public participation and collaboration, ScienceEducation.gov opens government STEM education resources as never before. Science.Education.gov deploys new grade-level stratification technology, assigning many resources a grade range based on the grade levels of the science concepts. ScienceEducation.gov was developed through a partnership of the Office of Scientific and Technical Information (OSTI) and Workforce Development for Teachers and Scientists (WDTS). Content contributors include the U.S. Department of Agriculture (USDA), the U.S. Department of Energy (DOE), the U.S. Geological Survey (USGS), the National Aeronautics and Space Administration (NASA), the National Institutes of Health (NIH), and theNational Oceanic and Atmospheric Administration (NOAA). In addition, links are provided to related... Related Topics: ERIC, nasa, NOAA, NSDL, osti, USGS Read more... |
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