The Alaska Volcano Observatory updates activity continuously. The contents can be adapted to several age groups.
This award-winning Volcano World at the University of North Dakota provides the history and hints for interpretation of basic volcanic activity on our globe. The use of remote-sensing tools is explained.
CPB/Annenberg (learner)focuses on the predictability of volcanic eruptions. Interactive enhancements make this site appealing, too.
What Happens When Lava Meets Ice?
This Science Channel video looks at what happens when you pour molten lava on ice. (Hint: it's not what you'd expect.) They interview the scientists involved, describe how they create the lava, and show some other tests they are running. You can find a longer video of just the lava pour here.
Remember kids, don't try this at home!
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Virtual field trips can be made to key volcanoes--active and extinct. For instance, the Scripps Oceanography Institute sponsors virtual/real expeditions to the volcanoes in Costa Rico.
Volcano Cafe tracks the activities of volcanoes around the world. Postings range from current eruptions (especially in Iceland) to volcano formation and geology to a look at when one might erupt and why it's so hard to pin it down.
Baking Soda and Vinegar Volcano
Here's how you can make your own "classroom safe" volcano.
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This category of sites lets students monitor changes from the safety of their computer. Students could follow such changes for a whole school year, thereby engaging in sustained inquiry.
Other Areas To Check Out...
• Around The World With Webcams
• Directory of Science and Technology Centers Around the World
• Disaster Preparedness
• Patterns and Art
• Safe Web Searching
• School Health Educators
• Scientists and Mathematicians Online
• Treks and Primary Sources
• Video Resources
• Virtual Schools Sampler