Current Events

  • Irish Chronicles Document Links Between Volcanoes and Weather
    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read more

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    Irish Chronicles Document Links Between Volcanoes and Weather

    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate.
  • EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read more

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    EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US

    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG.
  • Atmospheric CO2 Level Tops 400 ppm
    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read more

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    Atmospheric CO2 Level Tops 400 ppm

    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.
Waves breaking near a coast
Courtesy of UCAR

Resources for Teaching About the Hydrosphere

Windows to the Universe invites you to explore Earth's hydrosphere with your students via activities for the classroom. Listed below are activities that we have developed which are appropriate for middle school students. Click on the Beginner button above for activities appropriate for the elementary level, or click on the Advanced link for activities appropriate for high school level.

Surface Water

  • Build a Model Watershed Students construct a model land surface and use the model to explore basic concepts of watersheds including that water flows downhill, that ridges of higher land can divide watersheds, that lower-lying areas can create pools, and that water quality is affected by what is upstream.
  • The Land Plan Challenge Students work in groups to plan towns, being conscious of water resources - rivers and wetlands - and then learn how their town fits into the larger community.
  • Exploring Density of Salt and Fresh Water: Par 5 This activity provides an introduction to the interaction of fresh and salt water, a phenomena that happens at many deltas and estuaries. It can also serve as an introduction to the concept of density.

Oceans

Marine Life

  • Food Chain Checkers Students play a game that models the dynamics of a simple marine food chain and then improve the model my making their own rules that better model the way food chains and ecosystems work. (1.8MB PDF)
  • Growing Penguins Timeline Students match written descriptions and photographs of Adelie penguins at various stages of development then make a timeline of chick growth and development.

Biogeochemical Cycles

Other Water Education Resources (links outside Windows to the Universe)

Last modified January 9, 2009 by Lisa Gardiner.

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The Spring 2010 issue of The Earth Scientist, focuses on the ocean, including articles on polar research, coral reefs, ocean acidification, and climate. Includes a gorgeous full color poster!

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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