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417 words used in the labs.

Find a term from the labs, understand the process behind it, and see how it appears in the landscape. Each entry connects an explanation with a real observation and a model you can explore.

Shield volcano

A broad volcano with gentle slopes built mainly by fluid lava flows, commonly basaltic. Mauna Loa is a classic example.

What to look for

Hawaii from the ISS. The volcanic chain records Pacific plate motion relative to a long-lived hotspot; the youngest main island is at the southeast end.

The Hawaiian volcanic islands stretch across the Pacific beneath scattered white clouds in an ISS photograph.
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Explore further with USGS water glossary · USGS volcano glossary · NPS glacial geology · NASA Earth facts. Photograph acknowledgements are collected on the Image credits page.