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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.
This is an image of Mt. St. Helens, in Washington, USA.
Click on image for full size
Image from: USGS, courtesy of Volcano World

Volcanoes

Volcanoes are large eruptions that come from deep in the Earth's core. When they erupt, they spew out lava which flows out until it hardens into rock. There are presently thousands of volcanoes, but only a few of them ever become large enough to cause massive destruction. Scientists are sometimes able to predict volcanoes, but they have no exact theory of why one might erupt.


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How Hurricanes Form

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Hurricane Movement

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF